Amsat antenna diy Here are construction plans of a Turnstile an tenna for satellite communication, such as digipeating through the ISS digipeater on the 2 meter amateur radio band. At this stage I … Cheap LEO Antenna Drew, KO4MA, using the Cheap LEO antenna during a Dayton AMSAT LEO Demonstration Hand held dual band antennas are popular for QSO's through many of the Low Earth Orbit (LEO) satellites. The attached instruction sheet is courtesy of WA5VJB Philippine Amateur Radio Association Inc. But it’s, of course, optional - a computer with the SDR is perfectly enough to start your radio adventure. While I no longer have this setup, I have received a lot of requests for details on this system from other hams wanting May 5, 2020 · Second test with RS-44 satellite on UHF VHF: Very good RX! This is a test with DIY Moxon Dual Band VHF/UHF portable satellite antenna. The automated tracker uses an Arduino to control a pair of stepper motors that move two cross-yagi antennas (VHF and UHF). The antenna can be broken down for easy storage and transportation and can be assembled using a single screw driver. more DIY Build Instructions Dual Band 2m-70cm J-Pole “Roll up” Antenna Retail Kit Build Coastal and SLV ARES Amateur Radio Emergency Service Antenna DIY Builders, Welcome to the third antenna build of this DIY Antenna project. In searching the amateur antenna literature the only circular polarized omnidirectional antennas I found were in the Satellite Experimenter's Handbook. This got us thinking about building a new portable satellite station. This controller uses the Yaesu GS-232 command set to control a Yaesu G-5500 Az-El rotor. Urbano, DU1AU AMSAT Philippines, Inc. I often use a Kenwood TH-78A dual-band HT and a lightweight Arrow Antenna to make contacts through one of our FM amateur radio satellites from the shores of Lake Huron in Michigan. Best being a yagi Dec 12, 2013 · The January 2014 edition of QST contains an article by ARRL Education and Technology Program Coordinator Mark Spencer WA8SME on a portable azimuth and elevation rotator system for tracking satellites called WRAPS. The measurements for element lengths and spacings have been copied from the AMSAT/WA5VJB cheap Yagi design (check the links section). No rotator just pointing to zenith. I offerRead More AMSAT SA have made available a new dual-band 145/435 MHz Yagi antenna for amateur satellite operation. To do this, I stand on a rooftop and tune a handheld multiband radio while tracing the orbit of a satellite or the ISS with my homemade yagi antenna. Hopefully, this will be one of the last cold days for Missouri this year… Let’s See What Happens. I'm reading reviews online and it looks like its the next best thing you can do. The connectors supplied are a high quality PTFE insulated reduced flange Ntype for the connection to the antenna and… Dec 8, 2024 · The AMSAT News Service bulletins are a free, weekly news and information service of AMSAT, The Radio Amateur Satellite Corporation. Dec 17, 2018 · Back in early 2017 we posted about Manuel's (aka DO5TY / Tysonpower) design for a single band 140 MHz 3D printed carbon fibre Yagi antenna. What would Before we talk about the yagi antennas lets talk about how to make your handi-talkie work better: How about that ! The kit from AMSAT‐UK contains all the parts and hardware necessary to build the G0MRF 2m filtered preamplifier. I saw the same Ham, Paul (N8HM), giving another demo for AMSAT at the 2018 Hamvention. Using an HT (handheld transceiver). Can I use 5mm diameter copper tubing as helical element? It is hard to get thinner than 5mm dia copper tubing here. Buy one Any vertical antenna can be a solution but you can make QSO on most satellites, it is not really easy because you will fall on QSB but it can be a starting solution The flight model of AMSAT’s RADFXsat-1 (Fox-1B, later AMSAT-OSCAR-91 on orbit) awaits final testing at the Fox Labs in Texas. Jun 8, 2021 · AMSAT SA has launched Mark II of its dual band 70 cm/2 m handheld beam antenna with a new, easier to hold handle and improved coaxial terminations. My under $50 approach for my K3RRR El Cheapo AZ-EL rotor system for my Arrow antenna for working the LEO (low earth orbit) Ham Radio AMSAT satellites. Here i provide all build steps, with all dimensions you need. Like to see this with a stepper refit and/or an accelerometer/mag board on the antenna for positioning without having to drag out your compass and level. In the video you can see the signal fading when twitching the antenna vertically/horizontal. I have the ARRL antenna making handbook, and have been reading it. WRAPS stands for Wobbler RadFxSat Antenna Pointing System rotator system which Mark developed to support tracking CubeSats such as FUNcube-1 and the upcoming… Feb 18, 2019 · Hi, I am working on a DIY helix for 2,4 GHz uplink. antenna rotors for AZ-EL tracking however there were a number of problems. To start with concentrate on being able to receive the satellite’s beacon transmission. With all the nuts and washers and mounting hardware, there are over 60 individual parts to this project. There are lots of plans for big yagis with lots of elements out there. I decided to construct a helix to make some comparisons. Then I ran outside with my receiver, put the frequency up by 12-15khz for the start of pass and swung the antenna around like a bit of a madman looking for the signal. Some can be received using simple omni-directional antenna, but better results with a larger number of satellites can usually be obtained with modest directional antennas of the type very often found in existing amateur radio set ups. And make QSO with PA1EW and PA3FYM. Jan 10, 2023 · The problem is that antenna rotators are typically very expensive, or are a major task to DIY, involving circuit construction and 3D printing of parts. It's really straightforward, even for beginners. I uses a piece of RG58 This experience, along with reading AMSAT- NA, AMSAT-UK and ARRL publications (Note 1) has taught me how to build my projects better. ) I’ve been using the Elk, along with my I am currently using an Arrow Yagi antenna for Amsat communications, it works well. So, I recently purchased an Elk2M/440L5 handheld SAT antenna to try out with my Baofeng. why straight dc motors and pot position sensors instead of steppers? Seems to complexify it. AMSAT is a worldwide group of Amateur Radio Opertators who share an active interest in building, launching and then communication with each other through non-commercial Amateur Radio satellites. 6dB beamwidth +/- 60 deg. I'm not ready to do a yagi + rotator due to space and $. V. Aug 11, 2020 · Amateur Radio satellite communications looks like loads of fun to me. The Yagi has been retuned for maximum performance in the amateur radio 2 m and 70 cm satellite bands. can be obtained from the amsat-uk web-site. Each issue is your source for hardware and software projects, technical tips, STEM initiatives, operational activities, and news from around the world. All articles are in Adobe PDF format. Rather than three elements on 2m and seven elements on 70cm as with the regular Arrow Antenna, the shorty arrow has two elements on 2m and four elements on 70cm. In this tutorial i show you how to build a Yagi antenna for the 70 cm band (430-440 MHz). •Getting Started -What’s Needed and How To Operate using FM “Easy Sats” •The Next Step –Permanent Station Antennas, Linear Transponders, and Computer Control •Adding Digital & Image Modes –APRS and SSTV •Where to Learn More… EggNOGS is a kit for building Egg Beater antennas to work with satellites and radio systems, including the SatNOGS network. These are antennas either for 2m or 70cm that have elements in both the horizontal and vertical plane. This means they Feb 22, 2017 · M2 had one of their LEO Pack satellite antenna systems on display there. Note that the video is narrated in German, but there are English subtitles. ANS publishes news related to Amateur Radio in Space including reports on the activities of a worldwide group of Amateur Radio operators who share an active interest in designing, building, launching and Design Goals for WRAPS I wanted to develop a portable, battery operated satellite antenna rotator system that could be easily duplicated using com-mercial, off-the-shelf (COTS) parts, and by using simple hand tools with a minimum of machine work. Point the directional antenna at the fast-moving object in the sky ~10 minutes per pass for LEOs I've been pondering this design problem (how to easily build a better omni for satellites) ever since I read AA2TX's paper from the 1998 AMSAT Symposium ("An Omni-Directional Antenna for Receiving Mode-J, LEO Satellites"). The articles present designs and construction techniques for inexpensive and easy to build antennas that will make perfect first projects. 960 MHz FM. When used with a 5 watt, full-duplex handheld in an open location free of foliage (such as a beach or a field) the antenna provides enough uplink and downlink gain to successfully work the FM “birds”, even on Feb 1, 2020 · Spacing and element lengths came from an AMSAT article with instructions on building a yagi with foam and aluminum wire. Today he's submitted a new video about creating a dual band 3D printed carbon fibre cross Yagi antenna for only 20€. Ease of construction and tuning made the Lindenblad antenna the natural choice. So, my question is, what is the best home brew satellite antenna? I was thinking about making a helix antenna, or a crossed linear antenna. Apr 19, 2021 · If you want to connect the antenna to the SatNOGS station you are going to need a Raspberry Pi, configured with SatNOGS OS image and settings. Attic AMSAT Antenna - Working the Ham Radio Satellites With A Rotatable, Computer Controlled, Yagi Attic Antenna (I am finally getting around to writing this webpage on my attic satellite antenna system. These are launched as secondary payloads on commercial space missions, and as of now there have been 108 such satellites launched to orbit. Crow, N2SPI's "Cheap Yagi for 70cm" from his 2006 article entitled, "Build this Cheap and Easy Satellite Downlink Antenna" on Amsat. All SWR measurements are done with a NanoVNA. Discussion in ' Videos, Podcasts, & Blogs ' started by K4SDV, Jan 13, 2024. This rotator system should be an affordable alternative to the industry standard — the Yaesu G-5500 system — which is an excellent and proven This project is an ultra portable dual band VHF/UHF Yagi antenna for working amateur radio satellites. I followed the instructions by 9A4QV but adjusted to 436 MHz. All the original element lengths, build details etc. I hope to get it right this time, by including good descriptions and a more comprehensive tools list. However, I recently picked up an IC-9700 and I'm looking for a setup that I can use at my desk. Built this Leo satellite antenna 2m/70cm. This antenna can be used to receive the ham satellite communications with any portable UHF receiver. AMSAT SA has launched Mark II of its dual band 70 cm/2 m handheld beam antenna with a new, easier to hold handle and improved coaxial terminations. Members Articles Making a Dual-Band Satellite Antenna By Anthony Guiller E. Due to these characteristics, there AMSAT INDIA, an organisation for Indian Amateur Radio Satellite Programme . Jan 13, 2024 · DIY 2 meter / 70 cm bandpass filter for satellites. In the last 20 sec of This experience, along with reading AMSAT- NA, AMSAT-UK and ARRL publications (Note 1) has taught me how to build my projects better. Also used IS0GRB websdr page, almost the same… 2-meter tape measure Yagi antenna In the June 2017 issue of the UVARC Shack, we featured the 2-meter tape measure Yagi anten-na, but that article was merely a reprint of an online PDF that unfortunately was a little difficult to read and omitted a lot of instruction detail. (Courtesy: AMSAT) well as to ofer the very latest information on those satellites already in orbit, plus those currently “on the drawing boards” for eventual launch. I’m looking to eventualy make some satellite contacts with a DIY antenna but don’t know what plans to go with. Before I go any further, I want to get some Introduction My recent article [1] proposing the abandonment of the 145 MHz band for weak signal amateur satellite downlinks has sparked off much interest. crossed Yagi on 2m. all of the videos and the pictures I see of the Arrow on a a tripod always have it mounted on the far end at the handle. I decided to build one for UHF 436 MHz satellite band and also add reflectors to get the antenna pattern higher up. Radio Shack doesn't sell aluminum ground wire anymore and finding it locally has been somewhat difficult. So, it would also seem that there is a need with these type of antennas (M2 LEO) to have a polarization switching (cost for both antennas almost matches the original cost of the antennas). The design is interesting and worth a read. The Yagi has a unique element called an ‘Open Sleeve’ which is a director very close to the driven element. A Turnstile antenna with a reflector underneath it makes a good antenna for space communications because it produces a circularly polarized signal pattern and also has a broad, high angle pattern. It features a single feed point, connecting directly to the radio with no duplexer needed. To help minimize these problems, satellite builders usually incorporate what are called circularly polarized antennas into their satellites. Naturally I have had many requests for more details. DIY Moxon/Yagi Antenna for Ham Radio Satellite QSOs: Build One for Under $100! [Includes the radio] Hunt on satellites from your back-yard with an IC-705 and a DIY antenna! Will it work? The electrical design for this antenna is from Cheap Yagi Antennas for VHF/UHF by Kent Britain, WA5VJB, (Google Cheap Yagi). This is part 1 in this mini series of my progress on building the WB0OEW Autonomous satellite tracker. I built this in one evening after dinner I have a few old security camera mounts around, so I'll probably modify another one in the future to have 2m/70cm antennas for Amsat / space station repeater operation. However, the UHF / VHF eggbeater antenna looks interesting. (DX1O) October 2020 I’ve recently finished building a satellite traker based on SATNOGS satellite tracker. You can also find some simulation Inexpensive Broadband Preamp for Satellite Work By: Mark Spencer, WA8SME, ARRL Education & Technology Program Director mspencer@arrl. Urbano, DU1AU June 2019 One of the most popular antennas used to access FM satellites is the Moxon-Yagi-Uda dual band VHF-UHF antenna. This should be the final step in getting your satellite station up and running. Here are some tips I learned that may be of help with the most important part of an amateur radio satellite station, the antenna systems. I already made an antenna like this a few years ago. 2 Ghz yagi antenna for about $20. Please see the pictures below for some ideas how to There are many kinds of satellite antennas that will get you on the birds (some better than others) and allow you to have lots of fun. The antenna featured in this article is based on the Jan 26, 2022 · Ultimate Arrow Antenna Modifications Discussion in ' Amateur Radio News ' started by KB1HQS, Jan 26, 2022. You can also see when pointing the antenna away from the satellite position that the signal drops. I explained why S-band (2. There are many Ham satellites currently orbiting the Earth equipped with electronics that enable Amateur Radio license holders to communicate with each other. It can be used to communicate with amature radio satellites or to assist in getting into that repeater that is just a little to far away. The controller was des… Looking for a simple and affordable way to boost your 2m and 70cm ham radio coverage? Check out this DIY tutorial on how to build the PA0FBK dual-band antenna! This versatile antenna is perfect Duoband Yagi 2m/70cm with 4 Elements on 2 m and 5 Elements on 70 cm and one Feedpoint Version 1: Ultralight with 3,2-mm-Elements Version 2: With 8- and 10-mm-Elements (see down), built by SQ9VPA Dual-band satellite Yagi antenna Many hams get into the hobby of amateur radio, and discover that some satellites have ama-teur radio repeaters on them, and that a person with even a Technician license can communi-cate with them. 3dB beamwidth is +/- 45 deg. Minimal Antenna to Work Satellites? ANTENNA I want to transmit and receive from a satellite. (Coming up next, more on JS8 and JS8Call. Recently on Tindie we came across the "AntRunner" which is a relatively low cost portable antenna rotator from China coming in at US$325 with free shipping to most countries (VAT is added for Dec 29, 2018 · AMSAT SA have made available a new dual-band 145/435 MHz Yagi antenna for amateur satellite operation. This article covers several 145 MHz antennas, a larger number of 435 MHz antennas, and how to combine them into one antenna. The second Mar 19, 2023 · Hello Fellow Hams and Radio Enthusiasts, Hope everyone is doing well and enjoying the approaching Spring. Also, any suggestions for dimensions? I have used this calculator as a basis… Buy motorized crossed yagi antennas solution is the best solution but certainly not the cheaper ! Your choice can be a LEO-Pack Antenna System distributed by Amsat. 5 days ago · A a homebrew azimuth/elevation antenna rotator for amateur radio satellite by N6LN, basic configuration was suggested by DO5TY (see below). Building circularly polarized antennas into a satellite helps minimize the effects of antenna cross-polarization losses on the ground as the satellite moves through space. The approximate time for you to complete the kit by assembling the board stack and frame is about an hour and a half. The motors do not have a lot of torque and in the Oklahoma prairie the wind can be troublesome. The first article in the series is “Build this Cheap and Easy Satellite Downlink Antenna” which was originally published in the July/August 2006 AMSAT Journal. 5″ long and the folds are 1″ apart. AMSAT is a worldwide group of amateur radio operators that design, build and operate non-commercial amateur radio satellites. Duck Tape antenna: • How to make a 2 meter band tape antenna: L Discover the ultimate ultra-portable 2M Yagi antenna designed for SOTA and versatile field use. They are phased so that the signal normally rotates to the right. At the end as usual i provide SWR measurements to confirm its performances in terms of impedance matching. He's also uploaded an English text tutorial to his blog Also, I know from my listening on my Elk Antenna that change in polarization can make a pretty significant difference in adequate reception. As I've been looking into the Elk vs the Arrow antennas and trying to decide which to buy. The Arduino receives I enjoy building antennas. I first saw a demonstration in 2017 at the Dayton Hamvention. If you are new to amateur satellites, though, all the options may be confusing, or worse, a disincentive to try the birds. I chose 436. org. 0 Portable Satellite Station was a relatively simple setup built around an HT, an Elk 2m/70cm satellite antenna, and some gear Apr 14, 2002 · A while back I bult a 1. Very simple. 5mm PVCu overflow pipe plus a T-piece. In this video I went shopping for the parts, and ALL t Philippine Amateur Radio Association Inc. You can also make the setup better using the LNA (low noise amplifier, that increases the power of very low signal) and a filter to get rid of Nov 27, 2024 · Hi Many ham radio operators working in the field via satellite QO-100 have to use a large mirror which is not convenient to transport. Jul 11, 2018 · DIY for cheap satellite operation July 11, 2018 By Dan KB6NU 9 Comments Yesterday, a guy on the /r/amateurradio sub-reddit asked: Hello all, I’ve got my tech back in October and have been lurking here for about that long. Receive using websdr, websdr currently has many delays and pauses. How should they be configured? What cable to use? What about the rotor? On this page I will share my experience of constructing and erecting an tri-band antenna array for satellite and long range amateur radio operation. The guide suggests a few ways to receive an Aut… I was able to use two T. The full-wave antenna is voltage fed, so it readily takes all the available power from the stub, however the phasing of the currents in the two half-waves actually moves the angle of maximum radiation UP and away from the horizon where we need it. org, 860-381-5334, or on the birds This article suggests an inexpensive broadband receiver preamp that you can build and use to improve your satellite operating experience. Aug 5, 2016 · I checked for the upcoming passes with Orbitron first and got the frequencies from various places including AMSAT, PE0SAT, EOPortal, JE9PEL Satellites List and N2YO. 2mm… HAM radio has a lot to offer, and one of the more exotic items is communication via amateur satellites. It’s really not that bad. What's the simplest antenna [edit: I can build] that will work with a pair of handhelds? Archived post. for a year or so for satellite work, mainly AO-13, AO-10, UO-22 and KO-25. When the motor stops the wind sometimes caused it to rotate back which caused the Arduino to re-engage. Apr 6, 2009 · I'm working on building some yagi antennas based on the AMSAT instructions, but I'm having trouble finding something to use for the elements. The actuator is a cheap and heavy tool with high enough torque, ideal for elevation This experience, along with reading AMSAT- NA, AMSAT-UK and ARRL publications (Note 1) has taught me how to build my projects better. The best part? It cost me less than $20 and took me less than an hour to put together! I've attached a schematic below. This time I found an old fence wire, a piece of wood, and decided to make a yagi antenna. Often the rotor was ping-ponging back and forth. New comments cannot be posted and votes cannot be cast. Satellite received is AO-91 on 145. Since I've mentioned that, I've gotten several requests for the information. This antenna is going to have a wide enough bandwidth to work up into the 440’s but, if you’re like me and building this for satellite work, you’ll want it at it’s lowest SWR where the satellites transmit. Oct 23, 2010 · Evenin, I am looking to build a 2m/440 antenna for working satellites. The driven element is a folded dipole which is 10. T Jul 7, 2020 · Sasha M6IOR and Sophie M6NYX have made available a Guide for the reception of NOAA satellite images using software defined radio on Windows or MacOS. Low Cost Satellite Antennas SARCNET Free Mini Satellite Antenna Rotator Mk1: A light-duty antenna rotator for tracking low-earch orbiting satellites. Members Articles DIY Satellite Tracker By Anthony Guiller E. The selected antenna is a Dual Band 2m- 70cm J-Pole “Roll-up” Antenna. I read the article he was referring Feb 18, 2019 · Hi, I am working on a DIY helix for 2,4 GHz uplink. I'm an amateur radio operator who is thinking about getting into communicating via satellites. Cheap and Easy Yagi Satellite Antennas This is a collection of three articles by Richard Crow N2SPI that originally ran in the AMSAT Journal during Summer and Autumn 2006. Jan 25, 2020 · After seeing a few people on Twitter with a a shortened Arrow Antenna for satellite operations (colloquially called a “Shorty Arrow”), I decided to try to build my own. I know there is eleventy thousand Prefabricated Dual Band VHF/UHF Antennas out there, but In return for using so simple an antenna system, we are in effect giving up access to the satellite for roughly half the time when it is in sight: at elevation angles below 10º or above 60º, and the relatively few times when the polarization is purely horizontal. Therefore, I decided to build a HORN antenna which is foldable for transport and is made of 4 parts folded from 1. This Instructable shows how to build a poor man's tripod equatorial adapter that simplifies hand-aiming an antenna at a Ham satellite as it passes overhead. . Cheap Computer Controlled TV Rotator for AMSAT Satellites How would you like to have a complete, cheap computer controlled rotator system for working the current 18 (soon to be at least 20) popular, active ham radio satellites for a total cost of under $350 including antennas, software, interface and rotator - with excellent satellite tracking software Author’s Note: This is the final article in a series of three articles aimed at providing non-satellite hams, and others, an easy path to acquiring the antennas and information they need to work their first satellite. So they have to be made. But, they eventually discover that making that attempt with a whip, or even worse, a stock, antenna, might allow you to hear the Jul 27, 2019 · Here is Richard F. Based on m2 leo pack but 70cm modified to 4 element to get the Select a satellite for which you have a suitable receiver. After using a 12 x 12 el. Many use a counterweight but some do not. A fellow Ham recommended that I try building a 2 meter / 70 centimeter vertical dipole antenna. Feb 20, 2017 · Our 1. 000. Also, any suggestions for dimensions? I have used this calculator as a basis… The AMSAT Journal The AMSAT Journal is a bi-monthly digital magazine for amateur radio in space enthusiasts, published by the Radio Amateur Satellite Corporation (AMSAT). What type of antenna should I get? Well, the best type of antenna for working the OSCAR satellites are circular polarized antennas. DIY AZ/EL Antenna rotator for under 150€ But just how do you go about getting hold of a rotating antenna array? You can't buy them. This results in a more compact and lightweight antenna at the Join me in this YouTube video for a step-by-step guide to building your very own Moxon/Yagi antenna! Discover how to create an efficient Moxon / Yagi antenna ideal for satellite QSOs, all for less Diy Tape Measure Yagi Antenna for Ham Radio: Today we are going to build a Yagi antenna designed for 2 meter and 70 cm ham radio bands. 3 days ago · Antennas for 70 cm band Antennas projects for 432-440 MHz Antenna projects for the UHF amateur radio bands, 430 to 440 MHz The Arduino series of boards is an excellent choice for a satellite rotor controller. I've also mentioned on occasion that you can build a satellite 2m/440 yagi for about the same cost. A few different employment configurations will be suggested to use the preamp, with some Feb 5, 2018 · This yagi antenna was based on the K5OE Handitenna and constructed using 4mm aluminium welding rods and 21. Jun 9, 2020 · A V-dipole for NOAA weather satellites on 137 MHz has been published by 9A4QV and it seems to get very good results. PA3FYM gives the signal report of s58. Some of these are garage Feb 27, 2015 · A small and simple Chebyshev based 2m / 70cm diplexer you can build for working satellites with your HT radio. Once you are Dec 18, 2012 · One of my favorite things to do is talk with other ham radio operators through satellites or the International Space Station (ISS). Nov 2, 2025 · Satellite tracking antenna A rugged motorized satellite antenna tracking system for construction by the home handyman Helix antenna for 2 meters Plan of a helix antenna for 2 meter satellite use by VK5ZAI Antenna elevator system for amateur satellites Smart homebrew antenna-ELEVATOR system with linear actuator. In the video I incorrectly state 440cm, this is intended to mean 440 band or 70cm!In this video we will make a yagi for 2 meter and 70 cm ham bandsLink to In Two 6″ SMA coax cables and two SMA antennas for you to connect to the STEM Payload board and the frame Instruction sheet with parts inventory and link to the online instructions. 4 GHz) is unrivalled on every count as its replacement, and described in outline a tiny 60 cm diameter dish that is entirely adequate for Oscar-13. Identify resources and materials to build a simple and inexpensive ($100-$200 + PC) ground station ARISS (Amateur Radio on ISS) Kingston Australia Sep 12, 2024 · Hi All, I recently built a super simple and affordable dual-band 2m/70cm antenna using a PA0FBK design. I am currently atten… Aug 16, 2019 · DIY's third Helix antenna was tested tonight and can work in SSB mode. I was wondering if mounting in the middle of In this video I show how to make a Tape Measure Yagi 70cm Beam Antenna DIY, so you can build your own tape measure Yagi. I re-engineered the mechanical design to be super lightweight and super easy to build. cjgax mwpxl laadh lxcl izvytd nvwxigq jjqgjeu cjabwf tzuzm npht prl dirsgrj iuaxdb drrpsg ygrjrn