ANTENNA TRAPS. EDIT2: @K7PEH Feed point is the end of the straight-segment (leftmost in photo). These printed circuit board (pcb) antennas are perfect for high performance optimized antennas in a small package. 5oz), 72gm (2. Note that the antenna should be tested before gluing the end caps in place. My footprint was converted from Gerber (it is the F Antenna designed by Texas Instruments version SWRU120C) to . Relatively low SWR should be observed at this point. Antenna wind survival speed 150 km/h. These antennas have little resale value and as such are ready candidates for experimentation at extremely low cost. Here are some highlights and description of the device. The main advantage of UHF transmission is the physically short wave that is produced by the high frequency. 4 GHz band, which is host to a wide range of wireless applications. Given the basic tools, the special case of a PCB antenna is investigated USB stick containing 70 cm data transceiver. Two solutions: ceramic chip as jcyrax suggested, or closely follow one of the working PCB antennas. Soldering by me. When building antennas for the Wifi band (Like the 8dBi omni), a need for an easy way to check the antennas arose. 1oz), 51gm (1. 9600 bps is a default value. Jul 17, 2018 This omnidirectional circularly polarized antenna is designed for coverage of Low 3D Measured Antenna Gain 432 MHz for LEO Satellite RHCP Circularly Polarized 70 cm Log Periodic Spiral Antenna PCB Artwork View Apr 14, 2018 Gain is +14 dBi with an axial ratio of 0. Antenna diplexer for 145 and 434 MHz This diplexer can be used for combining 2m and 70 cm rigs (such as Moppe MC25 and RD58) into a common antenna or alternatively for using separate 2m and 70 cm antennas with a dual-band 145/434 MHz rig. In such cases the Big Wheel is an ideal antenna which should be used together with a directional antenna. • The antenna is only half of the complete antenna structure. J Pole antenna for 70cm part 2 by N6TWW - Duration: How PCB is Made in China Mini Diplexer for 2m 70cm. Technical Amateur Radio Books from RF to low profile. This would live on the antenna, near the feedpoint. Home High power amplifier for 1296 1 KW SSPA for 1. Z d is the average characteristic impedance of a simple dipole antenna. US/EU warehouse. New Sirio Performer 5000 PL fit base loaded CB and 10M trucker antenna with unique LED PCB that lights up when transmitting. A computer optimized UHF 70 cm Yagi antenna for radioamateurs, transmitting and receiving on 420 Mc - 430 Mc - 440 Mhz to 450 Mc with this beam in high gain Db's! Log Periodic Antenna Here are examples of Log Periodic Antennas from 300 MHz to 15 GHz on PC Board. Product Features * VHF/UHF Dual Band Gain Base Antenna Great for 2 Meter & 70cm Amateur Bands! Antenna for 70 cm 432 440 MHz is a curation of 77 resources about , DG7YBN - GTV 70-2m, 432 MHz yagi antenna, Experimental Patch Antenna, 432 MHz 5 elements Yagi, 26 elelements 432MHz LFA Yagi. Excellent mechanical properties. 4 GHz antenna/feedline analyzer you can easily build. 5 mm drill bit. Buy FrSky RC transmitter antenna at price as low as $0. This antenna is an attempt to open the squelch at VK3ASE. Prototype and implement simulated PCB antennas using customizable library of RF connectors and PCB manufacturing services. Here I will only present the dimensions and information on how to build a 4 stack for 70cm. trunk lid) using a K400 or K600 series mount. The new design concept has made it possible to produce the long awaited 80m traps. If Zin=100Ω and Zout = 50Ω, then from Zcoax = sqrt(Zin * Zout) makes Zcoax = 70. Whilst the matching at 2M was almost perfect as shown in the article I found that 70cm beam resonated at 439 Mhz and after playing with the elements I found that by increasing the length of 70cm director 4 I could get the antenna to resonate at 432. 2m/70cm diplexer for Satellite Antenna Similar (identical) to the ones used in Arrow antennas. Orr Buy the Book Today! Beam Antenna Handbook by William I. The Wire Size can range from 16 AWG to 12 AWG. Find Cushcraft 2M/70cm Wideband Yagi Beam Antennas A27010S and get Free Standard Shipping on orders over $99 at DX Engineering! The antenna described here is a direct-connect dual-rectangle beam for use on 70 cm between 440 and 450 MHz. it is a very tough to do trim and tune but with an analyzer you get it done quickly. High radiation efficiency antenna. Home High power amplifier for 1296 1 KW SSPA for 1. A balun is a 3-port network that converts a signal on an unbalanced transmission line to properly deliver or receive power from a balanced transmission line, which is often needed for coaxial cables and dipole antennas. 4mm wide, antenna (very roughly) ~56mm. The correct way to verify antennas/cables is at their operating frequency (or close to it). Price: $14. Asking R3500. This pcb antenna is only a trace. traces under the antenna itself on any layer of the board. Place to one side. Part 1 showed a schematic for the preamp component. The antenna structures built with those materials gets smaller by the square root of the ratio to more common pc board materials (4-10). news & new products aerials & cables amateur boxed units amateur pcb kits scanner & listenerHomepage van Maarten Ouwehand PG1N. It covers the 700, 750, 850, 900, 1800, 1900, and 2600 MHz bands. Video on repurposing surplus 800mhz 5/8 wave antennas to VHF and UHF. 5 dB. Some TIPS on measuring VSWR and troubleshooting M2 … Antenna Gain: dBi vs. 35 m) high. I checked the SWR with the build in SWR meter of my FT-817. The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. If you used RG58 for the antenna's pigtail, then it probably has a BNC male connector. Basic Design. 00. little amplifiers for 70cm 7 watt out 20mw in 12 volt 100 euro including power module. Andre ZS1F This is a simple active antenna booster. It is found that for a monopole antenna like a quarter wavelength vertical, the ground acts as a plane to reflect the radio waves so that an image of the top half of the antenna …Dual Band Antenna for 2m and 70cm. The antenna is a simple J-Pole designed for 70cm and made from 18SWG enameled copper wire. Size wise, they are not as compact as the patch antenna. I have used a circuit similar to that described in the ATF54143 application note but with the inductor and capacitor values scaled for 70cm and a damping resistor close to the drain. For example this is a 7-turn 5. 4 GHz SRD band for data rates up to 1 Mbps. 6 mm 1. Works with D-Star, DMR, Fusion, APCO25 and other digital modes which are based on GMSK, 2FSK or 4FSK. 0oz), and 90gm (2. It works the 6 meter, 2 meter and 70 centimeter bands. Recently the RASON technical committee was hard at work at the repeater site repairing our 2 meter repeater antenna. This amplifier will pull in all distant FM stations clearly. PCB size: 22mm x 26mm. Fig. 70cm 10-ELEMENT UHF YAGI ANTENNA homemade and home brew 70cm 6-ELEMENT UHF YAGI ANTENNA homemade and homebrew 70cm 4-ELEMENT UHF YAGI ANTENNA homemade and homebrew J-POLE FOR VHF/UHF homemade and homebrew VHF/UHF DUALBAND VERTICAL homemade and homebrew QUARTER WAVE VERTICAL ANTENNAS FOR THE 2-METER BAND, 70 cm homemade and homebrew Here's a simple broadband yagi antenna that can be built on a 4 foot boom and used for portable ATV, SSB, or satellite work on the 70-cm band. First of all – I can program the module for different speed (38400 for example). Frequency and volume control in the fashion of commercial transceivers. Internal FPC Dual-Band WIFI Antenna – CW3315B0100. 50 Projects for Radio Amateurs Edited by Mike Browne, G3DIH Many radio amateurs love to design and construct electronic projects from the very simple right through to the very complex. It is important to note that … Cut a square piece of blank printed circuit board, 123x123mm. 4GHz Antennas - 2. In both cases the physical boundary conditions need to be taken into account while designing an antenna. Shipments only – For International Shipments only An article appeared in the November 2017 issue of QST magazine for this antenna analyzer by Jack Purdum (W8TEE) and Farrukh Zia (K2ZIA). Excellent F/B, Excelent G/T. Picture shows early product sample. CR8900A Quad Band FM Mobile Antenna The CR8900A is pretuned to give best bandwidth and VSWR over the FM portions of 10m, 6m, 2m, and 70cm ham bands when mounted on the side of vehicle (i. The ZOI Flowerpot is an end-fed half wave antenna for 2m made from nothing more than RG58 coax and 25mm PVC pipe. As stated previously, Z b is the characteristic impedance of the boom, itself a transmission line (referred to as the “antenna feeder” line in Figure 2). DESCRIPTION UP for sale PCB for 500w-1kw LDMOS UHF 430-440 MHz amplifier LDMOS type - BLF578, BLF578XR, BLF188XR, BLF188XRS, MRFE6VP61K25H PCB material - ARLON TC-350, 2oz, tin platedYou will get PCB, schematic diagram and components values SHIPPING We ship worldwide from Ukraine by Registered Airmail with tracking number. Your pcb is probably When used with the tape measure Yagi antenna, DF (Direction Finding) performance over YagiCad design ( refer => http://www. 4 for those who are not familiar with the metric system. I was also interested to see how well my own design, the 'Captcha' PCB dipole, would stack up against these commercially available antennas. This is the antenna we include as part of our RTL-SDR kit, and it is an excellent beginners antenna. The dipole antenna is a half-wavelength structure made of wire, tubing, printed-circuit board (PCB) copper, or some other conductive material. Arcadian offers a complete line of antennas from Laird Technologies including RFID, DAS and M2M applications. You may want to file off any burrs. Notes on connecting the antenna to the long run of coax: How you connect the antenna to your long run of coax depends on what you used for the antenna's pigtail cable. Photograph of early prototype Lindenblad2 The main cause of the difficulty in designing and constructing these antennas is the need to feed the four driven dipoles. A larsen NMO 2/70 is wide enough to do both bands as long as you trim it so that the 70cm portion is barely within the <2. Upgrade your whip antennas now to increase the signal strength and improve communication to the wireless devices. PCB and system design when RF signals in the GHz-range are involved is often termed as “black magic” in the electronics design industry. Clemens Verstappen 70cm UHF Transceiver with DRA818U Module DL3ETW 8th of October 2015 Page 3 1 Design Goals My goal was the design of a transceiver capable for direct or via repeater communication. Dual Band Antenna for 2m and 70cm. The basic geometry of the antenna is shown in the following figure: Having said that, you should obviously try to reproduce the dimensions given in the antenna design details as closely as possible. 0 swr range (lowest frequency of 70cm) and GMRS is on the high end of the antennas band width. 8 to 54 MHz Dual Directional Detector 1. This is an easy way to get a first estimation of RFID tag performance by using MAGICSTRAP® in combination with one of the recommended antenna patterns. Many HAMs use a small handled Hi thanks for the reply. The new VA5 is a portable, full-featured Vector Measuring Device with a frequency range of 10 kHz to 600 MHz, with the added benefit of a USB port for connection to a computer. 4 GHz Yagi PCB Directional Antenna that can be used with any 2. The RFID – PCB Antenna Designer tool helps implement antennas on a printed circuit board (PCB) in the UHF frequency range (840-960 MHz). 5 KW LPF for 160-6m 1. The antennas I have selected are a Codan 9350 Autotune whip and a Comet SB-15 6m, 2m and 70cm stainless steel antenna, which has some gain on each band. A constant current source source can supply a fixed current to a load regardless of input voltage or load change. The other squiggly trace is the RFC, which also include a deformed half-loop of wire on the other side of the PCB (for tuning?). Probably the lightest traps on the market weighing just 40gm (1. Resources listed under 70cm antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. Browse our collection now! The Handi-Tenna 70 cm Portable Antenna Here is a high-performance hand-held beam antenna that is easy to build and guaranteed to improve your downlink from the LEO satellites over ANY rubber duck or mobile whip. No connectors or enclosure are included. The Radio Amateur Antenna Handbook By William I. Antenna gain is measured in either dBi or dBd. We tested it on Ethertronics’ own “demo board”, which is a 140x50mm ground plane PCB with SMT matching components. ADC RFID, model HFAN006, is a ring – shaped PCB board antenna working at 13. 56MHz high-frequency (HF) band, this antenna is specifically designed for applications where customers need a PCB antenna to integrate their own applications. What do Fully assembled and tested RF deck mounted on a 3" x 5" x 0. This application note covers initially basic antenna know-how (Chapter 2). Place a 1:1 Balun on the Antenna end of the Feedline. You can use an antenna switch to select up to 8 antennas and assign each antenna its own 2500 memories! 4 Times More Solutions and Faster! MFJ has 256 values each of capacitance and inductance for 131,072 matching solutions giving you a finely tuned very low SWR. 00 including Postage. 3 LNA-70cm-SAV-541 PCB The housing of the LNA is manufactured from aluminum plate D16 by milling on CNC machine. With common connector for both bands or with separate connectors for 2 meter and 70 cm. Andre ZS1FThis is a simple active antenna booster. Aug 15, 2017 These days, many low-cost antennas for the 70cm ISM band can be my own design, the 'Captcha' PCB dipole, would stack up against these Jul 17, 2018 This omnidirectional circularly polarized antenna is designed for coverage of Low 3D Measured Antenna Gain 432 MHz for LEO Satellite RHCP Circularly Polarized 70 cm Log Periodic Spiral Antenna PCB Artwork View When used with the tape measure Yagi antenna, DF (Direction Finding) performance over YagiCad design ( refer => http://www. Remember that omni antenna send out the signal horizontally, so don't test it from the room below your access point. The MA5B is a design that does not sacrifice ruggedness, performance and power handling for size and ease of installation. I also had time to make a PCB for the coaxial relay, so I need to run only one cable down from the roof and I can switch either 70cm or 2m antenna from inside. The UHF 70cm 7 Watt RF Amplifier uses the Mitsubishi RA07H4047M module, and is suitable for many projects including homebrew Transceivers, Transverters, or APRS. This is accomplished by slicing your antenna to various lengths with an exacto knife. Now regarding the FT-840 transceiver. Figure 1. * VHF/UHF Dual Band Gain Base Antenna Great for 2 Meter & 70cm Amateur Bands! HYS TC-HC152U 70CM 400-470Mhz Ham Radio 6. Find your pcb antenna easily amongst the 21 products from the leading brands (Murata, ) on DirectIndustry, the industry specialist for your professional purchases. 70cm pcb antennaPrinted Circuit Board (PCB) Antennas. They are very easy to build and will perform better than the antennas that come with most handhelds. com/ ) of a 433 MHz ( ~70cm wavelength) . 8 dBi. One of the members commented to me that I should write an article about collinear arrays so that we could all build our own. Can be used to combine two antennas to a dual band rig with one antenna connector . 70cm. Lay the mosfet device on the PCB. Element Length(mm) = 712500 / Frequency(Mhz) For example, 163. Yagi antenna gain can be approximated by counting the number of elements and then using this formula: 10 log (number of elements). Works with Ettus USRP B200mini and all equipment operating in this frequency range. This antenna begins to “squint”, that is, the antenna pattern points in a different direction from the optical center axis. or to use one antenna with a dual band rig with two antenna band outputs. LM317 / LM350 / LM338 constant current source is one of the simplest design. 0 is a Yagi antenna calculator that can easily display E-Plane, horizontal radiation pattern, and H-Plane the vertical radiation patters, as well as to display antenna characteristics, in Gain, F/B ratio and feed point resistance and reactance. The antenna can now be inserted into the conduit, and the other end cap can be installed. The paper discusses the pros and cons of these two popular antenna types. Thank you to YouTube user "ModernHam" for submitting his video that shows one way to weatherproof our 'RTL-SDR Blog Multipurpose Dipole Antenna'. A Low Noise Antenna pre-amplifier (LNA) is a simple unit which offers spectacular improvement in the quality of receiving signal, especially when the signal is very weak and it comes from long distance. Building a 2m quarter-wave ground-plane antenna The first antenna that you should consider building is the quarter-wave ground-plane antenna for the 2m band. The purpose of a trace antenna on a PCB is to provide a method of wireless communication. It is divided into two equal quarter wavelengths and These days, many low-cost antennas for the 70cm ISM band can be obtained from online sellers though eBay and Amazon. DV4mini antenna UHF 70cm. 1. El profe García. In point of fact, a test with the antenna on and off - a good test of noise figure - was such that upon connecting the antenna (a 24 element yagi), there was an appreciable rise in noise apparent in the receiver. 0 GHz to 6. Compatible for Taranis and FrSky antenna replacements. While it is not always feasible to home-brew a commercial Example 10: Eggbeater LEO Satellite Antenna for 432 MHz (70cm) This omnidirectional circularly polarized antenna is designed for up-facing coverage of Low Earth Orbit Satellites. Wideband operation 432-434 or 430-440 MHz, low SWR on all frequencies. 4GHz band is however, hard to find. rar Schematics and PCB's for T7F; The paddle antenna uses PCB core and transceiver Wi-Fi 4G signals in all directions. The SQ7 is a Multiband 4G and LTE Internal PCB Antenna ideal for integrating to LTE and 4G terminals gateways and devices. Manufacture: janielectronics What is an antenna ground plane? As the name indicates the antenna ground plane acts as a simulated ground. I need to put a 2m/70cm antenna on the wife's car. Fig 3. The mini PCB should ideally used at the location, where you plan to later integrate the MAGICSTRAP® antenna pattern in your layout. Hello everyone, I have designed a PCB with a 2. HD Design These PCB antennas by wa5vjb are sold individually. Kenwood TRC-80 in good condition includes DC cable and Kenwood DTMF mic. NEW LITE TRAPS for 10m, 20m, 40m, 60m, & 80m. Offers total efficiency values of 70% from 3. yagicad. PCB for the 70cm / 23cm pre-amp 32 x 55. The disadvantage of this antenna is that it is not low profile because it projects above the PCB. I got my hands on an interesting Kathrein 70cm antenna designed for use on trains. He also recommends attaching some lips to two sides of the reflector, to reduce radiation from the rear lobes. Very difficult. PCB Antennas 2. Trio Star antenna for 2m in PDF - trio 70cm WBFM transceiver for packet radio by YO5CRI in PDF - 70cm. These antennas are great for expanding your wireless network and improving your broadcasting or receiving stations. One of the This is a low cost fm antenna booster that can be used to listen to programs from distant FM radio stations clearly. 8 to 54 MHz combiner set 16 turn Helix Antenna for 70cm band (400-450 MHz) - Ask anyone with a helix. Actual DV4mini will have red PCB. Each dipole presents a 75-ohm balanced load and they UHF (70cm Band) L N A Low Noise Antenna pre-amp for SAT, EME & DX-ing. Ultra-Wideband (UWB) PCB Antennas Molex offers their UWB PCB antenna with balanced transmission Molex's transmission-balanced antennas offer high radiation efficiency for better performance and easy installation without the concerns of ground-plane effects. This pattern is ideal for accessing Low Earth Orbit (LEO) satellites. 70cm Then dont i need to divide be 4 to get 1/4 wavelength? Is there anywhere or some info available to explain when this track is placed on the PCB. COM is dedicated to delivering top quality Ham radio equipments to the enthusiasts around the world, a tradition that has kept many of our customer happy since 2000. Without proper knowledge/experience and sophisticated tools, you won’t get even close to a reasonable antenna. Details on the Halo antenna can be found on my Tree Friendly 2 meter Halo Antenna page. I needed 50 cm of pipe in this antenna (2 times 25 cm). 7Ω. The people on polish fpv forum wrote that supplied antennas are only not to burn radio when connected, not for serious work. WiFi PCB trace antenna design is no exception. The fold-over design has a hinge that rotates 360 degrees inside of the socket, so it can fold in any direction when needed. A Voltage Standing Wave Ratio (VSWR) meter useable at the 2. The circuits is configured as a common-emitter tuned RF preamplifier wired around VHF/UHF transistor Q1. This application is a truly planar PCB antenna with no extra bracket—instead the PCB conductor layers were used to form an inverted-F shape (Figure 1). com offers 35 yagi antenna pcb products. ARRL Product Review of the M2 6-Meter HO Loop Antennas. 5" copper heat spreader, ready to bolt down to your heat sink. Metal and PCB Antennas Walsin's metal and PCB antennas provide 2. 300 / freq(in MHz) = length ( in metres) at 433MHz you wont get a 1/4 antenna on a pcb unless the pcb is large most antennas for this purpose (remote controls etc) are smaller than a 1/4 wave and very This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. (contains old pcb but comes with the new pcb when ordered) below an amplifier build with mmic chamber complete with power module tested 180 euro. Strong boom. The HyperLink HG4958-05PU-UFL is a wide band 4. Requires Complete construction. These antennas are perfect for packet applications and assembly is a snap with Cushcraft's fully illustrated assembly manuals. EME221-70CM KIT1 is a Basic Kit that includes the PC board, Instructions, and all on board components. The antenna's radiation pattern bandwidth is the range of frequencies above and below the design frequency in which the pattern remains consistent. The circuit has relays and other parts which help to protect your control unit against the static and dangerous voltage during the lightning storm or thunderstorm. dBd. Counter poise dimensions . . Cushcraft 6M/2M/70cm Multi-Band Beam Antennas are designed to provide hobbyists who have limited tower or mast space with directional antenna performance on three of the most popular bands. 4 GHz Antenna/Feedline Analyzer. Any noise that is introduced at the antenna input due to EMI or crosstalk can degrade signal quality and even block the antenna signal entirely. Yagi Antennas for 144 and 432 MHz. this is good for 1mw in 3 watt out datv. 2 Valve Transmitter by SMØVPO This transmitter is very stable and will deliver up to seven watts of power with the components and tubes shown. Hi all, This is a continuation of a post at: Portable preamps for 6/2/70 part 1. High-performance PCB antennas for ZigBee networks 2. Any RF circuit application covering a narrow frequency range is a candidate for an L-network. Many HAMs use a small handled UHF (70cm Band) L N A Low Noise Antenna pre-amp for SAT, EME & DX-ing. To transform each 50Ω antenna to 100Ω we can use two impedance matching transformers, one on each antenna, made out of coax of the right impedance. Example 10: Eggbeater LEO Satellite Antenna for 432 MHz (70cm) This omnidirectional circularly polarized antenna is designed for up-facing coverage of Low Earth Orbit Satellites. September 25,2012: 2m Preamplifier and QRO coaxial relays in a RF box, done! (it will be installed directly near the coupling of four antennas 16 el . Another use is matching an antenna impedance to a transmitter output or a receiver input. I'm looking a the Comet SBB-2NMO but it get's rather poor reviews. It is found that for a monopole antenna like a quarter wavelength vertical, the ground acts as a plane to reflect the radio waves so that an image of the top half of the antenna is seen in the Earth. Selected by the University of Surrey (SSTL) for the UoSat ground control station, and for their many international customers; used by hundreds of satisfied radio amateurs worldwide. Ground plane-independent, dipole-style antenna. Usually the directional antenna stays in the direction where the most signals are expected from and some rare contact in an other direction is lost. 8-54 MHz A 1. It is essential to use SMD size 0805 or smaller components and the PCB design below. Wifi VSWR Meter. Since 433 MHz has a wavelength of approximately 70cm, your antenna should be about 35cm long for best performance. It really is the best and simplest antenna for the job. Justin is currently re-writing and adding several chapters for the next edition due within 2019. Selected by the University of Surrey (SSTL) for the UoSat ground control station, and for their many international customers; used …LPR – Lightning Protection for Antenna Rotors. With the internet of things coming into its own, wireless GPS Antennas in Your PCB Design. This antenna test service focuses on a popular ultrawideband embedded cellular antenna. This2400 Recently the RASON technical committee was hard at work at the repeater site repairing our 2 meter repeater antenna. 6oz) respectively. It’s very easy to connect and use. That’s unfortunate, because for many radio systems the antenna is one of the most important elements, one that can make the difference between a successful and an unsuccessful system. With the addition of some tinfoil and sticktape, it can double as a 70cm colinear. Do some research on inverted-F antennas. 2. Product Description. Zx is the antenna port. The Circuit Diagram, PCB Art Work and Firmware HEX for this project are attached in this article, could be freely utilized for personal or education purposes. 25in or 6mm, up to 3/8-in or 8-9mm. 7 feet (2. I'm looking to get a 2m/70cm antenna for my car. Building this antenna for the second time was a piece of cake. The CC2400 is a true single-chip, general-purpose transceiver for the 2. Lay the PCB on the heat sink. Example, a 8-element Yagi has an approximate gain of 9 dBd. Home > DV4mini > DV4mini antenna UHF 70cm. W8TEE and K2ZIA Antenna Analyzer, bare pcb only – $10 – For U. We design and manufacturer the HARDROCK-50 HF Power Amp with integrated antenna tuner (ATU). Homepage van Maarten Ouwehand PG1N. Bending the Elements 5. Drill the holes with a 2. The AR270B is computer optimized with two 5/8 wavelength collinear elements on 2 meters and four 5/8 wavelength elements on 70 cm. The dimensions of the plane vary by antenna and are described later in this note. A new white paper has been released comparing ceramic chip antennas and pcb trace antennas. A folded dipole is a dipole antenna with the ends folded back around and connected to each other, forming a loop as shown in Figure 1. HobbyPCB is your source for innovative amateur radio products. Alibaba. Build A 9dB, 70cm Collinear Antenna Back to Projects Page! Home! Build A 9 dB, 70cm, Collinear Antenna From Coax By N1HFX Recently the RASON technical committee was hard at work at the repeater site repairing our 2 meter repeater antenna. The 2m/70cm antenna kit (design : DK7ZB) was provided via NuxCom in Germany (great quality and service from Nuxcom, so I can strongly recommend them to you). A Parasitic Lindenblad Antenna for 70cm 4 AMSAT PROCEEDINGS 2006 1 Introduction A Lindenblad antenna provides circular polarization and an omni directional pattern that has most of its radiation below 30 degrees of elevation. I plan to mount the tribander on a roof rack mount in the middle of the roof and the Codan antenna will be able to be mounted either on the front bullbar of the vehicle, or at the rear of the The people on polish fpv forum wrote that supplied antennas are only not to burn radio when connected, not for serious work. I plan to mount the tribander on a roof rack mount in the middle of the roof and the Codan antenna will be able to be mounted either on the front bullbar of the vehicle, or at the rear of the Cut a square piece of blank printed circuit board, 123x123mm. CONTENTS. Yagi Designer 2. Typically, the width d of the folded dipole antenna is much smaller than the length L. It's a scaled down version of the 144 MHz ultra wideband yagi produced by Rutland Arrays. After completing the basic assembly of the collinear antenna, apply a small amount of RF with the antenna on the floor or ground. Guaranteed 100%. Radiation efficiency is approximately 75%. Hi thanks for the reply. The purpose of a trace antenna on a printed circuit board (PCB) is to provide a method of wireless communication. Keep in mind that the ground plane and antenna surrounding will play a huge role as well. Introduction 2. 25 wavelength, due to size restriction. To connect the feedline, I made small printed circuit board connection plates (one per antenna) to which I soldered the coax, and attached the helices with screw terminals. I worked it out like 3x10 (power 8)/433MHz=0. Find great deals on eBay for 70cm antenna. e. Popular in WiFi, RFID, UWB, and Counter Surveillance applications. “RF in” is connected to the Wifi Access Point (or other RF Generator) port. Mark the PCB mounting holes with a pen. 4" Antenna NMO 150W UHF Antenna for Mobile Radios. I am doing a design which include a bluetooth PCB antenna. It started with a self-build kit from the Danish manufacturer Jostykit that allowed everyone to build a small FM transmitter for a few Euros. I started with prolonging air module antenna (with just another wire) to ca 70cm (half wave) and looks like the distance is much better, even with stock antenna in ground module. your required antenna bandwidth is much larger than you stated. I am also working both on footprint editor and directly on PCB as you said. A POOR MAN’s ANTENNA ANALYSER (With sincere thanks to that outstanding engineer/designer, Jim Tregellas VK5JST (1), whose original work inspired me, for his patience, advice, understanding, tolerance and good humour in answering my many e-mails instead of telling me where to go!) A trace antenna on a printed circuit board (PCB) is often the first type of interface considered for one of these applications. Break out the inductor end plates from the PCB. High gain, low noise 70cm antennas. There are different options of the housing for the N-type socket and SMA socket connectors. Building a discone can be difficult, but ByTechLab shows that with a 3D printer it is possible to print the aluminum rod mounts, which significantly reduces construction complexity. This directional Log Periodic antenna is designed in PCB and operates from 850MHz to 6,5GHz with 5-6 dBi gain. enclosed collinear If the antenna is to be used outdoors, the end caps should be glued on with appropriate conduit glue, to ensure a weather-proof seal. Your PCB size and layout are part of the design, so you can’t just combine previously certified antenna/chip combos. However, using a ceramic antenna can be a good or even better alternative. The new version of HC-05 which I have in my store on eBay compatible with Android OS and RX/TX App by YO3GGX. High gain, Low Noise, Wideband operation, Excellent F/B. 2 mm 1. It is formed based on BF180 UHF Transistor. Next to this I used 70cm of speaker wire I had laying around and a few tie raps to strap it all together. It works with Baofeng, Wouxun and other amateur ht two way radios (SRJ77CA is specifically made for Wouxun radios). ARES/RACES /FEMA - requirements • Must be easy to erect during an emergency. One thing that the chip antennas do is use a ceramic material that has a dielectric coefficient much much greater than air (20 to 110) according to Kyocera). 8 GHz omni-directional antenna designed to directly integrate into devices requiring wireless capability. I was curious to see how well they performed in a variety of environments. . FrSKY replacement PCB receiver antenna for use with most FrSky receivers. Well wrapping the existing antenna completely in 6-8 layers of tinfoil, has a dramatic reduction on signal strength, now connect the antenna, and the signal should go back up. Therefore, if you want to deliver the most RF power from your 50-ohm source to your antenna - voila, only a 50 ohm antenna will do that! efficiency. Wifi VSWR Meter. The whole antenna body is a polygon. Introducing the new high precision 600 MHz Antenna Analyzer for measurements of antennas, cables and other one port devices. This is a topology that has good flexibility for PCB The antenna performance should match or surpass the Arrow antenna. 5 dB Dual Band Ringo This model gives very high gain with a low angle of radiation and it is only 7. The SWR will be much lower once the antenna is mounted in the air. The antenna fm booster circuit comprises a common-emitter tuned RF preamplifier wired around VHF/UHF transistor 2SC2570 (C2570). Produced to satisfy the requirement for lighter weight traps. Softening the Tubing 4. My requirements are: Relay switching for TX, by the presence of DC supply Preamp activated by DC power, otherwise off and bypassed 100 watt TX capability,… Justin Johnson G0KSC is a contribution author within the pages of the ARRL Antenna Book. Cushcraft achieved a major breakthrough in the development of an HF multiband vertical antenna that has been specifically designed for use with a tuner and amplifier. I also connected cables (Ecoflex 10) to both 2 meter and 70 cm feeding elements. This well-designed black anodized antenna can handle less-than-perfect weather and highway speeds. We are using same PCBs for our Fine tuned dipole antennas ;) December 2016 Update: FrSky has removed the plastic covering from the PCB antennas so they are less bulky and a bit lighter. RA18H1213G ready build in case 160 euro, see foto. Typically an antenna diplexer would enable transmitters operating of different frequencies to use the same antenna. The size of transmission and reception antennas is related to the size of the radio wave. 8mm element length for 435Mhz antenna. Max power 20W. Fig 2. 4GHz PCB antenna on it. This tubing was nice and easy to work with, and easily available, which is more important. 8GHz 12dbi Helical antenna. 8 to 54 MHz combiner set16 turn Helix Antenna for 70cm band (400-450 MHz) - Ask anyone with a helix. Build a DIY 70 cm / 440 MHZ J-Pole Antenna Here is an inexpensive J-pole antenna that is easy to construct. glass-epoxy PC board with the right-sloping “zigs” of the log phasing harness etched into the top surface of the PCB and the left-sloping “zags” etched into the bottom surface of a double-sided PCB. Note that Trevor Marshall recommends a size of 123x123mm if using the biquad as a stand-alone antenna, while 110x110 is optimal if using it as a feed for a large dish. The practical range for PCB LP's is between 700 MHz and 10 GHz. This next part I’m stretching for, but I think the certifications are A Homemade PCB Log-Periodic Antenna Ham radio enthusiast and RF designer Marco Cardelli (IZ5IOW) recently wrote in and wanted to share his PCB log periodic antenna design which he has been using together with RTL-SDR dongles. For a start, an antenna covering the range you identified won’t work. (it will be installed directly near the coupling of four antennas 25 el. 3 Counter poise The counter poise is made of metallic tin plate with a thickness of 0. This equation deserves some explanation. This is an UHF band TV antenna preamplifier circuit With 15dB gain to build easily. Top. The Diamond Antenna SRH77CA / SRJ77CA / RH77CA is a dual band 2m/70cm ht antenna for portable handheld amateur two way radios. The paddle antenna kit including 1pc 4dBi 4G antenna and 1pc 5dBi Wi-Fi antenna. A directional PCB antenna was required to operate in the 5. The Kit is suitable for both linear SSB, AM and non linear FM modes, and includes an integrated 5th order Chebychev low pass filter on the board. Quarter wave vertical antenna - overview or summary about the basics of the quarter wave vertical and ground plane antennas that ares widely used for medium wave broadcasting, mobile radio communications applications and many more. 4GHz, 5GHz, Bluetooth, BLE, Thread, WiFi, WLAN, Zigbee, Xbee GNSS, WiFi Ceramic 1 dBi 50 Ohms 1 Band Solder PCB Mount 3. 850 GHz ISM band with linearly polarized waves. I am wondering should I put a schematic symbol of antenna in schematic, and then make a footprint of PCB antenna? Or leaving it along in schematic, and routing The antenna performance should match or surpass the Arrow antenna. 8 GHz on inexpensive FR4 PCB. This application note describes a 2. Amounts shown in italicized text are for items listed in currency other than Canadian dollars and are approximate conversions to Canadian dollars based upon Bloomberg's conversion rates. kicad_mod. Orr, Stuart D. Power Supplies Explained By Paul Lee, G3ZKO A power supply is something that is often overlooked by radio amateurs, as for many it is simply the box, that at the flick of a switch, provides stable DC voltage. 70 cm Yagi Tripod Mount A correspondent has asked about the tripod mounting arrangement I use for the Arrow dual band 70cm/2m Yagi. Well, it is starting to get warm and the Arizona sun must have fried what few brains I thought I had as I was thinking that no one makes miniature antennas unless they are doing portable QRP so I decided I wanted to make a 70cm ground plane, just to see if I could. ( This is under exploration for a final PCB based design )F910D-G100U is a single band antenna operating within 868-928 MHz frequency range with a gain of 1. 35. 2 MHz and 144. The SQ7 is a LTE Internal PCB antenna based on multi-band, groundplane independent design optimised for 2G, 3G, and 4G/LTE frequencies. Jan 18, 2016 I want to share one of my recent projects – 3 el yagi for 70 cm band. The first stage is an band pass filter constructed by the C1, CV1, L1, L4, C7 and C3, the second stage is a base-common voltage amplifier with low input impedance to match. TWA0831_Internal PCB 2G & 3G & 4G Antenna_v3_20180508 Re: VSWR measurement of PCB antenna. DualBand 2M/440MHz mobile antenna Very short yet efficient antenna, mainly used in metropolitan areas where extended range is not critical. AN11662 All information provided in this document is subject to legal disclaimers. Here is a simple 2. Antenna not included. 4 GHz / 5 GHz single- and dual-band antenna solutions Walsin's metal and PCB antennas are easy to implement in a design and perform well in the 2. Find great deals on eBay for 2m 70cm antenna and 2m 70cm base antenna. This is an UHF band TV antenna preamplifier circuit With 15dB gain to build easily. About 80% of these are antennas for communications. Making a Bending Jig 3. Save 70cm amplifier to get e-mail alerts and updates on LNA 70cm PCB, SPF5122z, 432 MHz. I like hiking a lot so to have the necessary equipment is important. 1 so perfect! Outside of the 70cm band the SWR got quickly bad but all over the 70cm band it was perfect! A Parasitic Lindenblad Antenna for 70cm 5 AMSAT PROCEEDINGS 2006 Figure 2. The larger the wire, the wider the bandwidth. It is very easy to create a simple 1/2 wave dipole, all you need is some lengths of wire such as the core of some mains flex or even a straightened out metal coat hanger, some co-ax cable and a connector for your scanners antenna input (usually BNC or SMA). This2400 In their simplest form, dipole antennas for 2m and 70cm can be constructed from 2mm diameter enamelled copper wire and fed directly by a coaxial cable as Printed Circuit Board (PCB) Antennas. Originally it was equipped with a funky proprietary Kathrein coax connector. Innovative design for 5. The Helical antenna can achieve high directionality by simply increasing the number of turns of coil. Shop with confidence. Only US$2. The other half is a ground plane on the circuit board. Custom PCB Log Periodic Antenna · Yagi Printed Circuit Board Custom Designed PCB Antennas · Big Wheel Antennas. It is valid for PCB antenna designs as well as for standard UHF label antenna designs. It is inversely proportional to the frequency which means the wave with higher frequency will have shorter wavelength. Typical tubing diameters for the 2m and 70cm bands are from 0. org The … K6MYC on Antenna Testing. PCB from Far Circiuts, components from Mouser. Aug 15, 2017 These days, many low-cost antennas for the 70cm ISM band can be my own design, the 'Captcha' PCB dipole, would stack up against these Jun 24, 2014 I might get a better result if I made a kind of trace antenna on a PCB, and if The wavelength of a 433MHz signal is round about 70cm,so any F910D-G100U is a single band antenna operating within 868-928 MHz frequency range with a gain of 1. I have no experience with antenna designing ( but have recently gained a little bit knowledge after reading a lot online). Have a question about PCB antenna in schematic. The PCB is ~29. You can tune your own antennas with simple calculations and a ruller. Requires 7 to 10w drive (15w max drive) for 600w or more out, 50v at up to 25 amps VDD, 12v @ 30ma for bias. It’s very light, portable and great for backpacking or hiking. The "quagi" antenna was designed by Wayne Overbeck, N6NB, amd is a high-gain antenna combining the high-impedance (and easy matching) characteristics of the quad antenna array and the high gain and ease-of-construction of the classic Yagi-Uda parasitic "beam" array. A Folded Dipole Antenna of length L. 70 cm ATV Antennas Home made antennas, ATV stuff, 70 cm antennas, helix antennas and a lot of intresting pictures to view Build A 9dB, 70cm Collinear Antenna 70cm, Collinear Antenna From Coax 440 Mhz J-Pole Antenna plans Here is a 70cm (440 Mhz) J-Pole antenna that is inexpensive, and easy to build. Quality FR4 PCB for DIY Dipole antennas. Mini Diplexer for 2m 70cm. Build Your Own Antenna Analyser for under $50 Beric Dunn K6BEZ $20. However, Proper PCB Design for Embedded Antennas Application Note AN-00502 Revised 1/3 Dipole Antenna Calculator. The 70cm downlink is usually the more critical in terms of antenna requirements because the satellite’s transmitter is relatively low-powered and because path loss increases with frequency. The distance between one point to another adjacent point in a wave is known as the wavelength. The UHF section is made of 6 elements with gain-optimized spacing as opposed to 7 elements with equal spacing for the Arrow. This application note describes the design of a folded dipole antenna for CC2400, CC2420, CC2430 and CC2431. Many request for a Tri band base antenna Not harmonically related to 2 mt or 70cm. Offers balanced transmission throughout the entire connection regardless of cable length; reduces engineering resources and costs needed to mitigate PCB ground-induced radiation. Reviewed by Bob Allison, WB1GCMAssistant Laboratory Managerwb1gcm@arrl. The more turns on a helical antenna, the higher gain it becomes. Hi all, One project that I have been working for a little while is the design and eventual build of preamps for the 6m / 2m / 70cm bands. I want to share one of my recent projects – 3 el yagi for 70 cm band. PIC Solution PIC Processor $5 MAX232 $1 MCP6002 $1 AD9850 Board $4 RF Connector $1 PCB Ground Wire PCB Separated From Chassis & Connected With a Ground Wire Mother Board Daughter Board Mother/ Daughter Board Chip V Ground Plane PCB Ungrounded Heatsink IC Trace Long Unterminated Trace Vg PCB With Cable Attached Cable PCB PCB Ungrounded Metalization on PCB (Patch Antenna) © MA5B, Cushcraft’s multiband HF antenna provides 5-Band operation in a package small enough to mount to a tripod. The antenna had to interface with a 50 SMA connectorization and be fabricated entirely from circuit traces, metal components, and solder. It’s the electrical circuit which connects between a rotor and control unit. 1 mm Linear 203007 Cut Tape, Reel I don’t have any equipment that does 70cm SSB/CW except for my trusty FT-817, so my idea is to just listen and record, and to use the minimal antenna that might conceivably work. GSM requires both uplink and downlink bands, so the P-GSM-900 band is 890–915 as well as 935–960, i. Made in USA Free Online Engineering Calculator to find the Dimensions of a yagi Uda Antenna for a given Frequency Range and Length. In the mid 1970s large numbers of small FM transmitters, operating in the FM radio broadcast band (88-108 MHz) appeared on the market. What is an antenna ground plane? As the name indicates the antenna ground plane acts as a simulated ground. I of course continue to have my trust Arrow antenna, but I thought something a bit longer could be better. An antenna diplexer or RF diplexer is a unit that in one application can be used to enable more than one transmitter to operate on a single RF antenna. Mark the Mosfet mouting holes as well. rar Schematics and PCB's for T7F; The antennas I have selected are a Codan 9350 Autotune whip and a Comet SB-15 6m, 2m and 70cm stainless steel antenna, which has some gain on each band. Currently, I only own a 2m HT, (Yeasu, VX-170) and a 2m portable roll up antenna. The old antenna is the 6EL70 (6 element yagi with 10 dBd gain) from Vårgårda Radio in Sweden. 725 ‐ 5. Manufacture: janielectronicsMar 05, 2018 · I worked it out like 3x10 (power 8)/433MHz=0. Use Antenna Toolbox™ to design custom PCB antennas for practical designs such as cell phones, RFID, IoT applications. Everything can be done by varying the length of the tail. Understanding Practical Antennas and Design For something that is often so simple to make, an antenna is remarkably difficult for many people to understand. For custom products, large production orders and technical queries please click on the request a quote button below. The omni-directional design of the HG4958 Quarter wave vertical antenna - overview or summary about the basics of the quarter wave vertical and ground plane antennas that ares widely used for medium wave broadcasting, mobile radio communications applications and many more. Flex PCB Antennas. 9-5. Moving forwards it would probably be a good idea to terminate with an N-Type connector so that multiple antenna configuration can be used. It's impossible verify that antennas/cables are opertating correctly by using a ohmmeter because they only check for DC continuity. 3D view of meander antenna with its counter poise . 70cm band QFH & DIY antenna switcher Cut little Vs in the pcb so you can connect the coax directly to them (remember in this design, the main ground plane is the Hi thanks for the reply. Assemble the circuit on a good-quality PCB (preferably, glass-epoxy). • PIFA — The Printed Inverted F Antenna is like a monopole printed on a PCB, but it has a ground point and feed point along the main resonant structure. The antenna coil will be 'vertically mounted' on copper pcb acting as ground plane. ( This is under exploration for a final PCB based design )Results 1 - 48 of 106 70 Cm 444Mhz 12 Element Beam Yagi Ham Radio Antenna. 75. Ultra-Wideband (UWB) PCB Antenna with Balanced Transmission Offers high radiation efficiency regardless of cable length variations so customers can choose from a range of 50-to-300mm micro-coaxial cable lengths without concerns of compromised performance Comet SBB-15 Mobile Tri-Band VHF/UHF 6m/2m/70cm Antenna offers three bands of performance. 70cm pcb antenna A Halo 4 stack will perform about the same as a dipole in any given direction. The amount of 16/06/2018 in 70cm SOTA Antenna, Amateur Radio, SOTA, SOTA Antenna, Summits on the Air, VHF DX. The measurements below are for building a simple Dipole Antenna. Kenwood TRC-80 in good condition includes DC cable and Kenwood DTMF mic. Build A 9 dB, 70cm, Collinear Antenna From Coax Recently the RASON technical committee was hard at work at the repeater site repairing our 2 meter repeater antenna. UHF antenna design is more complex than a typical HF antenna design and needs an expert understanding of the electronic design constraints. Please simply attach the mini PCB to your PCB. So, this is the reason why 50 ohm antennas are important: The sources that drive them typically have 50 ohms of impedance. 93 GHz) DECT PCB Plug and play antenna with 100 mm cable and IPEX/MHF/UFL connector Locate in the Silicon Valley, the Eagle-Antenna. Although only a 70 CM antenna was described in this article, the formulas can be easily calculated for the 6 meter, 2 meter or 1¼ meter bands. 4 Assembled view . In about an hours time, and about $10 worth of materials, you can have a great performing omnidirectional j-pole antenna. Particularly used in a city or area where the repeater sites are generally higher than the mobile station due to the pattern having an uptilt. A wide variety of yagi antenna pcb options are available to you, such as free samples. N1805DEST-T-G100U N1805DEST-T-G100U: Airgain Single-band(1. Authentic N9TAX VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole. Click to expand no 0. « Reply #9 on: November 20, 2017, 10:55:53 am » Just remove the first series element from the matching network (from the chip towards the antenna) and use the pad as your access point for attaching the VNA, easy enough to do an open-short cal against it and then return the components toward the antenna. FrSky estimates about a 20% range improvement with the PCB style antennas. Cowan (Contributor) Buy the Book Today! Simple Low Cost Wire Antennae by Orr, William I. For HF bands I have IC-703+ and set of J-pole antennas. This effect can also be exploited to achieve an electronic pivoting of the antenna beam as a function of change of the transmission frequency. For a more detailed overview of what goes into designing and testing a PCB antenna, check out this hack which we featured back in 2010. By embedding these antennas directly into a device, the need for external antennas is eliminated. Planar inverted-F antenna (PIFA) shapes, which have become popular in mobile phones, typically have a metal bracket as the radiating element at some distance above the PCB. 4 GHz radio reference design that has a 50 ohm RF interface. PCB Trace Antennas, more specifically the F-Antenna (also called PIFA), is a simple antenna to tune. 70 CM ANTENNA datasheet, cross reference, circuit and application notes in pdf format. It needs to be short and I already have an NMO mount. Millimeters were used for many of the measurements but can be converted to inches by dividing millimeters by 25. 70 m not cm (so it's 70cm) the formula for wavelength is . 96, buy best FrSky PCB Antenna For X8R X6R Receiver sale online store at wholesale price. It was all 1:1. The CC2420 is a true single-chip RF transceiver designed for low power AR270B 5. Collect yourself Price £60. Quantity: Social Media Follow us on Twitter; Follow us on Facebook The AA7BM 440/70cm Ground Plane "Tea Cup" Antenna Project. Using a GPS antenna in your PCB brings it into the mixed signal regime. 6m/2m/70cm Yagi Antenna Built from Old TV Antenna by KGØZZ This turned out to be a great little antenna. Hello. PCB Yagi Antennas Thus far we have produced PCB Yagi antennas between 400 MHz and 6 GHz. This guide will give you a straightforward and not overly technical overview of antenna design, to provide guidance on choosing the right antenna and maximizing coverage and capacity. Orr Buy the Book Today! The enclosure is a standard project box and provides enough space for the battery, PCB and antenna. ARTICULO ANTERIORLetrero luminoso con LEDs (Como se Hace). I've also heard of people using 1/4 L wire antenna loosely wound into a helix/spiral shape getting good results. LPR – Lightning Protection for Antenna Rotors. A discone is a type of wideband antenna, so it is commonly used with SDRs like the RTL-SDR that have huge frequency ranges. 5/7. 3 MHz with 50 ohms impedance. 3 mm. (no line of site but about 20kms suburban downrange ) This all metal 2M yagi will supplement the 70cm aerial and also serves as a test project for all metal yagi design. 5mm. Remove the PCB and Mosfet device, centre punch the holes. 88-1. Build A 9 dB, 70cm, Collinear Antenna From Coax By N1HFX Recently the RASON technical committee was hard at work at the repeater site repairing our 2 meter repeater antenna. I decided to make one antenna that I can handle and have with me every Results 1 - 48 of 106 70 Cm 444Mhz 12 Element Beam Yagi Ham Radio Antenna. I'd like the 70cm capability to leave room to grow and ideally, I'd rather not have a full height antenna, but I am a little open to the idea at least. 0 GHz Trio Star antenna for 2m in PDF - trio 70cm WBFM transceiver for packet radio by YO5CRI in PDF - 70cm. Orr Buy the Book Today! Cubical Quad Antennas : How to Build and Adjust Quads -- by William I. High gain, low noise 70cm antennas. S. (29 x 52mm in 2010 redesign) The exact circuit implemented on the board can be any of several published designs. The ground plane will only be 100mm, smaller than the ideal 0. The antenna is bearing 25 degrees (north north east) and will be used mainly for the local QSO's. GPS/GLONASS:WLAN&GSM900:1800 Antenna – CSW0159W. Sometimes these units may be called antenna duplexers. What "ideal" means here is still a mystery. May 05, 2013 · J-Pole antenna build project for the 440 to 450 MHz range (70cm band). Antenna performance Performance of the new X-Quad was evaluated using my old 70 cm yagi as reference antenna. The antenna design was optimized for broadband performance using YAGIMAX software. kicad_pcb then to