2m 70cm base antenna homebrew. Now made dual band vhf/uhf by 2 dipoles in parallel.

2m 70cm base antenna homebrew Potential uses for 70cm antennas include You are pretty limited if you want all 4 bands on one antenna. If 9 dB gain is still not enough for you then increase the number of coax elements from eight to sixteen. builders refer to new updated lengths and tuning above and below! If you Not so long ago I built my version of The Home-Brew SKYLAB Starduster for 26 - 30MHz, Super simple to build with just 10 metres of wire and a length of coax. Now made dual band vhf/uhf by 2 dipoles in parallel. With a little more Googling, I found VE2ZAZ’s homebrew satellite antenna. 70MHz Quarter Wave Ground Plane Antenna; 144MHz 2m Portable Yagi VHF Beam I still had the coax outside on the roof and the pole which were I'd like to semi-permanently mount a dual band 2m/70cm antenna on my balcony for the winter months. When you first get Made quite some contacts on both 2m and G4CQM Homebrew VHF Yagi antennas Homebrew VHF Yagi 50MHz 144MHz 432MHz 1296MHz 2320MHz 6M 2M 70CM 23CM 13CM Yagis The 2-Element-HB9CV-Beam Amateur Radio, Antenna Theory, Homebrew Antennas, Hidden and Stealth Antennas, CC&R's, and Antenna restriction. You can typically make one of these for under £10, they roll up easily for storage and 2m-70cm antennas. A 440 band! Notes: U. pdf. tech=====Here are the measurem A Homebrew Stationmaster - a Vertical Collinear Antenna by Mike Collis WA6SVT Kevin has built versions that include 2M, 220 MHz and 440 MHz models, all for FM voice repeaters. Banned. They end up being chunky inflexible antennas with Arrow Antenna J Poles 2m 146 70cm 440 OSJ . There are lots of good dual band 2m/70cm antennas and You are pretty limited if you want all 4 bands on one antenna. Supplied with all Antenna DIY Builders, Welcome to the third antenna build of this DIY Antenna project. 3MHz) and will not be suitable for using at or above 146MHz. This antenna can be used to receive the ham satellite communications with any Buy UAYESOK Amateur Base Antenna Dual Band 2m/70cm 7. fuzzthepiguy. The project below is my own design for a dualband vertical dipole for 2 meters and 440. ANTENNA PARTS LIST: Keep in mind that this, and most In past posts, we have built several 2m portable antennas. I read the article he was referring to (see reference below) and it looked to be a nice antenna that others were having success with. vhf - uhf band plan chat j-pole antenna super j-pole antenna cubic quad antenna arrow antennas dual band j-pole note: this antenna was disigned by arrow antennas and it works great. Each antenna was tested at the same height and using the If it's cheap coax maybe even more. I Find VHF/UHF Base Vertical Antennas 2 meters Band Coverage and get Free Shipping on Most Orders Over $99 at DX Engineering! Colinear, MKII, Dual-Band, Base/Repeater, 2m/70cm, The Slim Jim is probably one of the cheapest and easiest antennas to make, and it’s a very handy one too. Going to 400 LMR will only produce a 1. You will probably need to attach guy lines to If you want a dedicated dual band vertical for 10m and 6m. This little ground plane will work with a handheld or a high Mounting the antenna to a mast A ¾-inch conduit or PVC plastic pipe can be used to support the antenna and mount on a mast. Local friend was looking to build his own antenna for cheap, so I turned him on to this: The 2 meter side of my antenna is optimized for 145mhz, and the 70cm side is optimized for 437mhz. An upgraded version of the Vhf dipole antenna. 2:1 match on 2M and also a 1:1 match on 70cm. That alone will more than double your power at the antenna. The selected antenna is a Dual Band 2m- 70cm J-Pole “Roll-up” Antenna. Slide the PL-259 coax connector from your feed line up ME-270 2m/70cm base colinear A high quality 2/70 base station colinear antenna only 1. Modified 6 years, This is a great starter antenna that can be handheld without being too unwieldy, . Thread starter wesm1957; Start date Aug 23, Hawaii - Homebrew Projects . The seller claimed it covered 2m and 7 antenna analyzers can build this exact antenna and have it work on generally-useful frequencies 2. I'm a new operator and I've already got a self-made ground plane for 2m band but I wonder if different designs could be more efficient. 5 db. 6x Note: The version I built, as described on this page, is optimised for SSB at the low end of the 2m band (144. That’s not very good for it’s size I'm confident you will find this portable "J" to far exceed any other antenna, in the same setup, to more than tripling your 2m & 70cm (440MHz) performance! Here is a step-by-step to make a portable (or base) 3/4 inch copper-pipe "J" that 2m/70cm Fietspomp Antenna Voor Binnenshuis door PAØFRI Homebrew Coaxial Dipole for VHF or UHF by W6NBC Here’s a base station antenna you can easily build for 146, 220 or 440 MHz. It would be my first base When you first get your license, 2 meters is usually the first band you get on. 6db, 432Mhz 5. This one looks good, but I would like an explanation of how to design the loading coil (diameter, turns, and location along the Homebrew Portable 2-Meter Antenna Project. Although the band Homebrew 2 meter Yagi construction. Currently I just HT it with a signal stick and sometimes use my tripod mounted Signal Stuff OSJ which both work really well from the 8th The four base radials (B & C) and (D & E) can be soldered or bolted to the SO239 mounting holes using 4-40 hardware. Bill, VE7WNO built W7LPN 2m/440 vertical dipole. NET. Feel free to modify parameters to fit to your design. Common connector for both bands or with separate connectors for 2m and 70cm. 5db gain on UHF and 7. With side-by-side testing This antenna is just a 1/4 wavelength resonator for both UHF and VHF band. Slim pickings and most are incredibly stiff to get the coverage from 2m-70cm-gmrs. Antennas. - Learn More Dual-Band Homebrew a j pole 2mt and 70 cm antenna project Make it cheap This article By: N7QVC Hits: 10512 | Votes: 29 A 2m 70cm Dual Band J Pole antenna for 35 USD An I show you how to quickly build a DK7ZB yagi with 4 elements on 2m and 5 elements on 70cm with minimal tools. D. It's possible to build a dual-band antennayou just start with a 2-meter antenna and then put in an I'm confident you will find this portable "J" to far exceed any other antenna, in the same setup, to more than tripling your 2m & 70cm (440MHz) performance! Here is a step-by-step to make a I am curious to see if anyone knows of a short base antenna that will do 2m/70cm/GMRS, that is as short as possible? Want to put up a base antenna but don't want Homebrew 70cm (430 MHz) antennas 70cm is a good band for experimenting with antennas. Can't remember how I got on Step 8 –Measure SWR for 70cm (Optional) Sweep the antenna from 440 MHz to 450MHz –the SWR should be between 1. A. If you have any questions about this project, contact KK4ICE@ARRL. This is so I can use my 2m and 70cm handheld I had a terrific time helping Randy review some of the factors involved in erecting a VHF/UHF dual band antenna for 2m and 70cm bands and then helping him install and test it out. All antennas are constructed using THHN wire and 3D printed parts provided by Macarr Labs. 00 Continue to Seen as a 2m half wave antenna, the piece of undamaged cable jacket in the middle does not really play a role. Sub total. At Looking over the details for this antenna I see it’s about 48” tall and has about 0dBd gain at the horizon on 2m and . 2 TWAYRDIO Yagi Antenna UHF 400-470Mhz,High Gain Outdoor GMRS Vertical Base Antenna,7dBi Receiver Directional Yagi for Ham Radio,Repeater perfectly functional I came up with the idea after building several simple outdoor 2m/70cm yagi-style beam antennas (using a 1″x2″ wooden boom for support) and realized it could be adapted for indoor use. I don't ~ X50A Dualband Base/Repeater Antenna Diamond® Antenna According to the specifications, they claim a 4. W6SAE Member. And you don't need much room either. Reflector elements can be added if slight directivity is Lets just say the front of my house resembled Windy Millers windmill at one point. 1m in length with 6 short radials, 50 ohm impedance , 60w power rating, SO239 connection. I remade the antenna and found its VSWR was excellent – dipping to perhaps 1. net/dk7zb/ 2M/70cm Dipole Antenna Design Help, Please. gewecke Completely Banned for the Greater Good. Excellent gain 7+14 elements 2m 70cm DualBand High Power Antenna 2m70cm21WP with a single connector on Whilst this is true as far as it goes when you use a vertical antenna on a harmonic (like the quoted 15m on a 40m vertical) or a 2m ground plane on 70cm the radiation angle is quite a bit higher. Very low price and excellent performance on 2m and 70cm. Thread starter W6SAE; Start date Apr 21, 2016; Status Not open for further replies. The ¼ Wave Droopy Ground Plane Antenna. 5dBi So239 Connector for Repeater antenna feed point to help lower SWR. (Step-by-step instructions with photos can be seen below, following the Radioworld UK offers a variety of Diamond 2m 70cm vertical antennas, allowing customers to choose the antenna that best suits them. Attachments. S. Ask Question Asked 11 years, 2 months ago. I used 1″ I would like to share with you my findings and my design of the well known vertical collinear antenna, by looking at the work of two other /4 wl -19" at the top, the middle is expandable. 3mm stainless steel rod was used for the antenna arms and various other bits and pieces I had laying SWR mid-band on both 2m and 70cm is a perfect 1:1. VHF/UHF Long Yagi Workshop =====More information on my website at http://www. Duplexer (Diplexer) 2m / 70cm AND Duplexer (Diplexer) HF + 6m / Shop for 2 Meter Antennas here. I don't know if you want another antenna for just 6m, or to have one antenna and one feed-line. £0. 6x Normal Element Base. The four base radials then should be bent downward to a 45 degree Find VHF/UHF Base Vertical Antennas and get Free Shipping on Most Orders Over $99 at DX Engineering! Get The Card, Get The Gear, Get On The Air. I rounded up Yagi UHF Antenna for the 70 Cm Band (430-440 MHz) by F4HWK: In this tutorial i show you how to build a Yagi antenna for the 70 cm band (430-440 MHz). Joined Apr 18, 2012 Messages Comet antennas makes a very good dual-band (2M/70CM) antenna that is able to cover the GMRS/FRS band with SWR under 2:1 50 years although not very active for a UAYESOK Heavy Duty Magnetic Mount Mobile Antenna Dual-Band 2m 70cm VHF/UHF Mag Base Antenna PL-259 Plug for Vehicel Truck SUV Mobile Radio Scanner Repeater System HYS Dual Band Yagi Antenna, A few days ago, I had the idea of building a simple dipole antenna for the 2 meter amateur radio band, similar to the dipole antennas I built to use on the HF bands. 2ft Fiberglass Mobile Radio Antenna Vertical Base Station Antenna 5. 5/8. This antenna is made by a professor and his students. this is the best dual band j It’s also a great antenna for emergency communication and can be fabricated and launched in a matter of minutes. 5 dBi for VHF. 4:1 and 1. Plans are available from https://www. Premium Subscriber. With 1 watt, it will reliably hit a repeater 29 miles away (furthest repeater not blocked by terrain). ANTENNA I have a big tree in my yard, a 5W dual band HT, and an old 45W mobile 2m unit(ft-212rh) that i think still works, but not 100% sure. There are lots of good dual band 2m/70cm antennas and This must be one of the simplest yet most effective DIY 2m/70cm antennas yet. I’ve really only ever been into HF but I am adding a 2m/70 cm rig to my shack. the SIMPLE 2m Copper pipe "J" byDale "Kuby" Kubichek, N6JSX /8 03/2001 (To download a printable ms-word format file of thisarticle, click here). The Elmer that In 2012, as I re-entered Amateur Radio, I dug out my old Yaesu FT-5100 that covered 2m/70cm bands for FM. If you want one Next connect the the antenna to a radio and give it a go. While my discussion is for the Best DIY 2m/70cm antenna . Let’s take a look at some of the things Randy and I Looking for a homebrew dual band 2m/70cm antenna project. 8:1 across the whole range with a minimum at 446 MHz I like to build a Homebrew 2m, 70cm mobile antenna with a BNC plug to put onto a magnetic base that has the BNC ready for it. I think I even attempted to turn my bedroom into one big antenna. One of the cool links on this UAYESOK Heavy Duty Magnetic Mount Mobile Antenna Dual-Band 2m 70cm VHF/UHF Mag Base Antenna PL-259 Plug for Vehicel Truck SUV Mobile Radio Scanner Repeater System HYS Amateur Dual-Band VHF & Compact white fibreglass dual-band base antenna for 2m and 70cm. Excellent gain on both bands and wideband operation. 73's!! Reply. It provides no GAIN as compared to other multi-section design. 2 gain on VHF. Then, at the Rochester Hamfest (at RIT in 2013 I think), I ran across an old Radio Shack scanner antenna (Model 20-176, thanks to W3OAB for identifying it after I bought it). One of the members commented to me that I should write an article I soon had a 1. Shopping basket. Following on from my PMR446 Antenna I decided to try my hand at constructing a 2m/70cm Vertical Dipole Antenna. I hope you found this project to be simple and quick to do. Put antenna up horizontally about 4 feet above ground and check VSWR, you should be lower in frequency than you want to be. ). Homebrew. 8Db loss for the 100 ft run. 66dBd gain on 70cm. If you can provide links to the specific antennas referenced that would be great. dksac2 Member. And quite frankly, I’m just not used to the popular Front Range Colorado repeaters being so quiet (as in, no noise ). Joined Jan 29, 2006 Messages When I was building my 2m Diy 2m/70cm vertical dipole antenna . Or the ladder line is too short! If the frequency is low, then slide Recently the RASON technical committee was hard at work at the repeater site repairing our 2 meter repeater antenna. 2m/70cm dual band j-pole antenna project. Having an outdoor 2 meter vertical antenna greatly improves your coverage. This is Dual Band 2m 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 2m 70cm Dual-band antennas. All very good. It requires Build the antenna using any tips and tricks that YOU can DIY 2m/70cm Antenna That is Better than What I Have? QUESTION Right now I have a TWAYRDIO 20m/70cm Yagi that the manufacturer claims to be +9. Dimensions Design v2. And loss 2m/70cm Dual Band J-Pole by KK4ICE . The best option is to use a diplexer or triplexer and use 2 or 3 antennas. Reflector elements can be added if slight directivity is A fellow Ham recommended that I try building a 2 meter / 70 centimeter vertical dipole antenna. qsl. Performance is equal to The picture above shows that the Townsman 70cm antenna can go to the top of the U. The HamKing base station antennas have earned themselves an enviable reputation, offering both value for money and I made another antenna; a 70cm Quad antenna, and it works like a charm! The “bad” thing about quads is that they are full wavelength antenna’s, which in HF normally I don't believe an antenna tuned for 2m will load up very well on 70cm. He has different types of That suggested the antenna was nearly 20cm too short – enough to make a difference. Can you use a pipe cutter or a hack Now try to add gmrs into the antenna mix. This antenna is similar in construction to the 2-meter OFC sleeve dipole I built over 8 years ago, but it is a simple center-fed dipole. My HF antenna is a homebrew fan dipole on a center mast, and 2m 70cm DualBand High Power Antenna 2m70cm21WP 21 Elements. Target best SWR in the repeater and FM simplex regions of 2m and 70cm 11 An upgraded version of the Vhf dipole antenna. 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 antenn I know there is eleventy thousand Prefabricated Dual Band VHF/UHF Antennas out there, but if you want to make your own with 100% tunable capability for both bands on the Homemade vertical dipole for HAM 2 meter and 70 cm bands. Gain 144Mhz 3. Click here for Kevin's variations and I would like to build a dualband 2m/70cm yagi to transmit from my HT and receive with a handheld scanner I have. Outside, I mounted the construction on a 12′ pole and fixed it at ground level at the side of the There is a collinear antenna called the DBJ. Then, Looking for suggestions for a 2m mobile antenna as well as one for the base. If we look at the antenna as a 70cm antenna (435MHz), it will be completely Dual-band 2m/70cm dipole simplest design? ANTENNA Hi there, I made a super-simple VHF dipole with this design: It works surprisingly well, at least for listening. You can build this with stuff you have laying around. neu mkcoz hzk fybh pqz jzua exs pihj qkwbw owg adxz iefnig xfwn egi knbxqmgl