The entire 2m band is typically under 1. . (73) 73 product ratings - 58 WAVE DUAL BAND ANTENNA KIT 2 METER 144 440 Mhz TRAM 1180 NMO Motorola Cable. 28 yards. Additionally, 3 meters are also equal to 3. Measure and drill the wooden beam. All articles are in Adobe PDF format. The antenna is constructed using 12" copper pipe and copper fittings. For instance, the J-Pole antenna design for 2-m70-cm ops is a very popular homebrew project, and it can be created with simple aluminum from the hardware store or even from segments of twin lead feed line. Cebik web site requires registration (free) Commercial 2M 70cm Slim Jim N9TAX. 220 antennas are hard to find. 7dB Gain 3 Section Fiberglass 200 Watts 50 Ohms 58 Wave. This antenna is unique in that it is enclosed entirely in 34" PVC. The 2 - 440 Collinear vertical in this project is simple to build and expand, semi rigid, self supporting, water tight, electrically sound, and a professional appearance when completed. it Search table of content Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 7. 440 band is generally around 2. Seriously, if you are not on a budget, Diamond and Comet make excellent 2m440 antennas in several gain configurations. Fig26A 440-MHz ground-plane constructed using only an SO-239 connector, 4-40 hardware and 116. Clamp the junk-box section in vise to saw rod. 2 Meter 440 Vertical Dipole Antenna Project by W7LPN W7LPN 2m440 vertical dipole The project below is my own design for a dualband vertical dipole for 2 meters and 440. 99 59. 1, sometimes much less. Cebik web site requires registration (free) Commercial 2M 70cm Slim Jim N9TAX. 2 Meter Slim Jim Antenna using 300 Ohm Twinlead. The center hole for the BNC to BNC connector was already there, but had to be reamed out. A J-Pole antenna is a half-wave vertical fed at its base through a shorted quarter-wave stub acting as a transformer matching section. Download PDF. 1, sometimes much less. I like to tinker, so when I finish one project, I go on to another, even if it works well. The best antenna is the one you just made a contact with. You also will need something to cut the rods and a drill. Easy Jpole Building - Easy home brew 2 meter copper jpole antenna build - under 20 bucks - Hits repeaters 45 miles away. 5 to 1 with the best point is under 1. Senior Team. Add Tip Ask Question Comment Download Step 2 Dimensions All dimensions are given in mm on the first figure. Prepare the coaxial cable. 51 at the lowest edge and around 1. Dropshipped from Cushcraft 144148 430-450 MHz. 1 miles per hour, which is a fairly slow walking pace. 6 dB gain on 144-148 MHz and 8 dB gain on 440-450 MHz. Whether you are operating portable or permanent, you will find the convenience of a dual-band Log Periodic antenna to be an incredibly convenient and powerful tool in your ham operations. aluminum tubes to minimize losses. Check out this page to see equipment for sale from SECARS and local sellers. Boom to mast brackets and balun terminated with "N" connector are included with all antennas. 15 dBi gain on 2 Meters; 3. DUAL BAND BASE ANTENNA WITH A TON OF POWER This is the best in class for the price. 95 149. PG1N&39;s HAM Radio Site - 2m Projects - Omnidirectional Vertical. All you need is a vertical element cut to the correct length and some kind of metal ground plane or counterpoise to complete the antenna. You now need to secure the top of the antenna with the top copper cap. Prepare the coaxial cable. NOTE Comparative testing of this antenna against one without the "choke" showed that the choke is NOT needed. Having purchased an all-mode, all-band (160m - 70cm) transceiver, I became curious about what 2-meter weak signal operations have to offer. 2M Slim Jim antenna using Aluminum Tubing. 2 Meter 440 Vertical Dipole Antenna Project by W7LPN W7LPN 2m440 vertical dipole The project below is my own design for a dualband vertical dipole for 2 meters and 440. 440 MHz wave 440 MHz Wave. Many of the hams that have purchased this antenna have put it to use for in situations such as UHF voice operations. 66 . The SIMPLE 2m440 Copper pipe J Posted in VHF Antennas Can you use a pipe cutter or a hack saw, can you solder then here is how to build a SIMPLE J antenna that will more than double your 2 meter (and even 440) performance by Dale Kuby Kubichek, N6JSX Download PDF Related Posts via Taxonomies Six Meter Yagi Antenna. looking to build a homebrew antenna not sure if i should go with a 12 wave or a 14 wave once i get my license. Seriously, if you are not on a budget, Diamond and Comet make excellent 2m440 antennas in several gain configurations. Cebik web site requires registration (free) Commercial 2M 70cm Slim Jim N9TAX. A 146 Mhz J-Pole Antenna A 2 meter (146 Mhz) J-Pole antenna that is inexpensive, and easy to build. 5 MHz. 1 14 meters) there will be a few more 12 wave elements in the middle. I love it There&39;s nothing in my book that&39;s as fun as experimenting with antenna designs. cx Back. 5 to 1 with the best point is under 1. Joined May 30, 2009. I like to tinker, so when I finish one project, I go on to another, even if it works well. The 1 wave antenna has two strikes against it. 95 165. PG1N&39;s HAM Radio Site - 2m Projects - Omnidirectional Vertical. Jul 19, 2014 The best antenna is the one you just made a contact with. I Chose 440 band because the lengths are small. For instance, the J-Pole antenna design for 2-m70-cm ops is a very popular homebrew project, and it can be created with simple aluminum from the hardware store or even from segments of twin lead feed line. it Search table of content Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 7. The QM7 antenna is a simple 7 elements Yagi with 3. It can be mounted on a roof top for use as a fixed antenna and it also folds conveniently for travel making it an excellent backpack antenna. 6 dB gain on 144-148 MHz and 8 dB gain on 440-450 MHz. The SIMPLE 2m440 Copper pipe "J" Posted in VHF Antennas Can you use a pipe cutter or a hack saw, can you solder - then here is how to build a SIMPLE "J" antenna that will more than double your 2 meter (and even 440) performance by Dale "Kuby" Kubichek, N6JSX Download PDF I5MZY 13 Element Yagi for 2 Meters Band Dual Band J-Pole for UHF VHF. Bandwidth is normally 10 MHz. Some Notes on the Slim Jim Antenna M0UXB. 51 at the upper edge. You could build your own. 1, sometimes much less. 15 dBi gain on 2 Meters; 3. When I setup in a park I use a homebrew inverted V with 28' pole. A clearly explained, step-by-step procedure that will. Note I do not claim origination of this general design. Although not designed as a 440 70cm antenna, it works pretty good anyway. by Scott Duckworth. Seriously, if you are not on a budget, Diamond and Comet make excellent 2m440 antennas in several gain configurations. 2 Meter Halo Antenna. so a loop for use on 146. After measuring and before sawing, put 2 nuts on 7&189; end, one nut on 18&189; end. Arrow antenna makes a 2m440 j-pole, which at 49. 70cm yagi antennas Pictures and plans to build 70 cm yagi antennas. Low-loss antenna relay. Performance This antenna was designed for center frequency of 146 MHz and 440 MHz. 2 long. There will be some resistance as the foam spaces pass the first opening. 95 is a bargain and an excellent antenna. The 2 - 440 Collinear vertical in this project is simple to build and expand, semi rigid, self supporting, water tight, electrically sound, and a professional appearance when completed. So, do not waste time and go to make the Bottle Antenna. Antenna Specs & Features; 2. Screw driver or nut driver PVC cutter or fine tooth saw Sand paper or Dremel tool with sanding disk Ruler or tape measure Step 1 Cut three pieces of PVC tubing. You also will need something to cut the rods and a drill. 7dB Gain 3 Section Fiberglass 200 Watts 50 Ohms 58 Wave. Whether you are operating portable or permanent, you will find the convenience of a dual-band Log Periodic antenna to be an incredibly convenient and powerful tool in your ham operations. 440 band is generally around 2. ) Perhaps the most difficult item to locate for this project is the 38-24 threaded rod. The Yagi antenna&39;s overall basic design consists of a "resonant" fed dipole (the fed dipole is the driven element and in the picture above and the second from the left side), with. 2 Meter 440 Vertical Dipole Antenna Project by W7LPN W7LPN 2m440 vertical dipole The project below is my own design for a dualband vertical dipole for 2 meters and 440. 00 - 46. 440 band is generally around 2. 2 long. We offer a huge selection of Yagi antennas, including cross-polarized and circularly polarized, from top brands like M2 Antennas, Cushcraft, MFJ, and Diamond Antenna. 95 165. All you need is a vertical element cut to the correct length and some kind of metal ground plane or counterpoise to complete the antenna. At that time, common hardware store copper water pipe and fittings were reasonably priced and were very suitable for building UHF cavities. Some Notes on the Slim Jim Antenna M0UXB. The 2 Meter band tape measure beam antenna is a 3 element Yagi with about 7. All Elk 2M440L5 models come with a handle for handheld operation, making this antenna perfectly set up for satellite, DFing, and very portable operations. The driveway is sloped so it doesn&39;t stand straight, but it is fine on a more. Although 332-inch rod is preferred for the 144-MHz antenna, 10 or 12 copper wire can also be used. Octopus antenna hub turns your ham-sticks into four fully balanced dipoles in minutes hub turns your ham-sticks into four fully balanced dipoles in minutes. 2 long. 5 dBi; Max Power 200100200; Overall length is 37. This one looks good, but I would like an explanation of how to design the loading . 95 is a bargain and an excellent antenna. 200 watt power rating. I used 1 thin-wall PVC pipe, aluminum tape, and RG-8X coax. Slim Jim Antenna Project VU2RMU. I used 1 thin-wall PVC pipe, aluminum tape, and RG-8X coax. Homebrew CB Antenna and 2M440 Setup. Its resonant on the 2M frequencies. Crossbanding works most excellent. You could build your own. 6 dB gain on 144-148 MHz and 8 dB gain on 440-450 MHz. Slim Jim Build. 51 at the lowest edge and around 1. 5 to 1 with the best point is under 1. 100" overall height. Homebrew J pole vertical for the . cx Back. No endorsement is intended here, but the only business in our location that had it was Fastenal. Homebrew 2 meter Yagi construction. The best antenna is the one you just made a contact with. Although not designed as a 440 70cm antenna, it works pretty good anyway. Low-loss antenna relay. Elements 3 elements on 2 me. The best antenna is the one you just made a contact with. I used a Radio Shack CB antenna mirrorluggage rack mount because it was the only antenna mount available locally. This is because electrically very-short-for-wavelength. 220 antennas are hard to find. 4 mm per inch. The XP also works well on the OSCAR frequencies and is handy wherever dual band. 2M Slim Jim antenna using Aluminum Tubing. 2 Meter Antennas. However, the SWR stays close to 21 across the entire 2-meter band. Step 2 Dimensions All dimensions are given in mm on the first figure. The 2 meter antenna. You could build your own. Whether youre operating on 2 meters or you work in the 1. For final mounting, attach the antenna to a " wooden dowel using tie wraps about every 3 inches. 2M Slim Jim antenna using Aluminum Tubing. This is because electrically very-short-for-wavelength. 61 in the middle and up to 2. UHF 440-470 MHz Slim Jim Antenna 42. 5 to 1 with the best point is under 1. Go out and listen 10. Having purchased an all-mode, all-band (160m - 70cm) transceiver, I became curious about what 2 - meter weak signal operations have to offer. Dave shows how an old coffee can can be repurposed as a home made 2 meter70 cm antenna. 2m Projects - Omnidirectional Vertical. Sep 22, 2015 The entire 2m band is typically under 1. Fig25Simple ground-plane antenna for the 144, 222 and 440-MHz bands. A Tree Friendly 2 Meter Halo Antenna Having purchased an all-mode, all-band (160m - 70cm) transceiver, I became curious about what 2-meter weak signal operations have to offer. I used 1 thin-wall PVC pipe, aluminum tape, and RG-8X coax. Cebik web site requires registration (free) Commercial 2M 70cm Slim Jim N9TAX. Crossbanding works most excellent. May 21, 2020 - Explore Paul R Mark&x27;s board "Antennas VHFUHF Homebrew HAM & TV", followed by 146 people on Pinterest. The shield of your coaxial feed line might serve this purpose. The SIMPLE 2m440 Copper pipe J Posted in VHF Antennas Can you use a pipe cutter or a hack saw, can you solder then here is how to build a SIMPLE J antenna that will more than double your 2 meter (and even 440) performance by Dale Kuby Kubichek, N6JSX Download PDF Related Posts via Taxonomies Six Meter Yagi Antenna. In terms of 2 meter performance, it appears to be working better than my Ringo Ranger II, which is mounted outdoors with the tip about 35-40 up in the air (FYI, the Ranger II has an estimated gain of 7 db. 1, sometimes much less. 95 is a bargain and an excellent antenna. Performance This antenna was designed for center frequency of 146 MHz and 440 MHz. "Bottle" Antenna for 145 MHz by RA1TW. Continue Shopping Likes 592. Browse our catalog in search of the perfect 2m mobile, portable or yagi antenna. This is somehow bidirectional in an "8" shape 1-14 meter mobile gain antenna with trunk lip mount Vertical Omni Antenna, 2 Section Collinear 5 This route can be a difficult one for rotatable antennas, but there are some real. It covers 2 meters and 70 centimeters. When I setup in a park I use a homebrew inverted V with 28' pole. Best way is to use an SWR meter for 2 m 440 and test the match using your radio&x27;s highest power setting so there is enough power to make the meter read the reflected power on 440. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features. 5 and 451. Although not designed as a 440 70cm antenna, it works pretty good anyway. 95 149. The entire 2m band is typically under 1. 15 dBI, 220 3. I used 1 thin-wall PVC pipe, aluminum tape, and RG-8X coax. Discussion Starter &183; 1 &183; Nov 7, 2020. 2 meter 70 cm Dual Band Antennas for 144 MHz and 432 MHz. 1, sometimes much less. Gain on 2m 2. Looking for a homebrew dual band 2m70cm antenna project. Jul 19, 2014 Jul 19, 2014. W7LPN 2m440 vertical dipole. 4" Requires UHF Mount Magnet mountantenna combination for 2m70cm. Slim Jim 2M Antenna SV5BYR. Apr 04, 2013 &183; Workman UVS-300 144 440 MHz Dual Band Base Antenna; UVS300 Base Antenna VHF 144-148 MHz 8. Slim Jim 2M Antenna SV5BYR. The Super Antenna MPL1X is a portable HF antenna that you can use on flat surfaces like your garden, balcony, and. You could build your own. 220 antennas are hard to find. 2 Meter Halo Antenna. 51 at the upper edge. 0 MHz) and 40 meters (7. on the 70 cm (440 MHz) band and 25 MHz. The entire 2m band is typically under 1. You also will need something to cut the rods and a drill. The 2M-440XPS is ideal for linking repeaters and remote bases utilizing both 2 meters and 440 MHz. The shield of your coaxial feed line might serve this purpose. ) To make a long story short, this thing works even better than I had hoped for. 2m 70cm Base Antenna Homebrew. A magnifying glass. Specifically, I was hoping that my homebrew antenna tuner would improve my signal to noise ratio on the aforementioned bands. 220 antennas are hard to find. 2m Projects - Omnidirectional Vertical. The SIMPLE 2m440 Copper pipe J Posted in VHF Antennas Can you use a pipe cutter or a hack saw, can you solder then here is how to build a SIMPLE J antenna that will more than double your 2 meter (and even 440) performance by Dale Kuby Kubichek, N6JSX Download PDF Related Posts via Taxonomies Six Meter Yagi Antenna. 00 - 46. However, the SWR stays close to 21 across the entire 2-meter band. Crossbanding works most excellent. The 2-Meter Slot-Cube Antenna John Portune, W6NBC Few homebrew antennas have been more popular than the 2-meter J-pole made from ordinary copper water pipe. The entire 2m band is typically under 1. There will be some resistance as the foam spaces pass the first opening. Moreover this antenna, while dismounted is just 1 meter long, and the total weight is just 100 grams. (remember 25. 51 at the upper edge. Next drill a 58 inch hole in the top of your 1 12 cap and then attach it to the top adapter. Elk Antennas 2M440L5 Dual-Band Antenna. It provides no GAIN as compared to other multi-section design. Loop-On-Ground Antenna Part 2 I don't understand all the electrical interrelationships but a long posting at RadioReference. A True Plumber&39;s Delight for 2 Meters - An All Copper J-Pole by KD8JB A number of years ago, I build a J-Pole antenna from some scrap aluminum tubing and a 5-foot stick of TV mast. No endorsement is intended here, but the only business in our location that had it was Fastenal. 2 Meter 440 Vertical Dipole Antenna Project by W7LPN. Since an old 5 element version (v1) of my antenna was shown in the July 2011 edition of RadCom, a few people have contacted me asking for some information on how it was constructed. The shield of your coaxial feed line might serve this purpose. I used 1 thin-wall PVC pipe, aluminum tape, and RG-8X coax. Take the 1 12 adapters and glue them to your PVC pipe; one on the top and one on the bottom (the bottom adapter can be used to mount the antenna to a flange for stability). CheapYagi for 70cm This article is intended to enable non-satellite hams to painlessly acquire the 440 MHz downlink antenna needed to actually hear and work a satellite. houses for rent durant ok, melody india tiktok capcut template
This antenna was designed for center frequency of 146 MHz and 440 MHz. . 2 meter 440 antenna homebrew
Simply put, it's a 58-wavelength vertical telescopic whip with four 14-wave telescopic whips serving as a ground plane at the base. Add Tip Ask Question Comment Download Step 2 Dimensions All dimensions are given in mm on the first figure. 15 dBi gain on 2 Meters; 3. 200 watt power rating. Slide the coax through the PVC pipe and connect to your SO-239 connector. 81 at resonance (see Figure 2). I5MZY 13 Element Yagi for 2 Meters Band. 1 14 meters) there will be a few more 12 wave elements in the middle. Any amateur can do the antenna during one hour. Elk Antennas 2M440L5 Dual-Band Antenna. 55 simplex would be 1005146. 81 at resonance (see Figure 2). (remember 25. It is designed for 2 meter 70 centimeter. Some Notes on the Slim Jim Antenna M0UXB. It requires a balun and works very . Product Description · Dual band UHFVHF fiberglass base antenna · 17&39; (5. 2 Meter Antennas 2M440 MHz Dual Band Copper J-Pole From N7QVC 2M Fan Antenna (Yes From an Electrical fan) 2 M 12-Wave J-Pole-- VHF-FM (Stealth) Antenna Made From 450-Ohm Ladder Line -- From KB1GTR 2M Self. 81 at resonance (see Figure 2). 1, sometimes much less. My First 2-Meter Homebrew Antenna (Part 1) 3 Comments Antennas By Brian KJ7RDY October 24, 2020 November 7, 2020 I bought my first HT, a. Slim Jim Antenna Project VU2RMU. To make a coupling, cut off about 4" of the old element and solder it up inside the top copper cap. 2m 70cm Base Antenna Homebrew. I&39;ve had one for several years. Cebik web site requires registration (free) Commercial 2M 70cm Slim Jim N9TAX. 5 to 1 or better across the 2M band. One piece will be 11 14 inches long and the second will be 6 78 inches long. how many parking tickets can you get before your license is suspended. 220 antennas are hard to find. The original goal was to have an antenna that I could use for 2 meter SSB. I&39;ve had one for several years. Octopus antenna hub turns your ham-sticks into four fully balanced dipoles in minutes hub turns your ham-sticks into four fully balanced dipoles in minutes. Ham radio antenna. 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. Download PDF. cx Back. This antenna is built on a 2 inch washer. Crossbanding works most excellent. Some Notes on the Slim Jim Antenna M0UXB. You could build your own. This is a great starter antenna that can be handheld without being too unwieldy, and while it has modest gain it should be enough. A meter is approximately 39. with a UHF Female (SO-239) connector. 00 Add to cart. 51 at the lowest edge and around 1. 99 Get it as soon as Fri, Aug 5 4. The Super Antenna MPL1X is a portable HF antenna that you can use on flat surfaces like your garden, balcony, and. The original goal was to have an antenna that I could use for 2 meter SSB. Apr 04, 2013 &183; Workman UVS-300 144 440 MHz Dual Band Base Antenna; UVS300 Base Antenna VHF 144-148 MHz 8. To do the antenna takes a half of hour and to tune the antenna also takes a half of hour. Its resonant on the 2M frequencies. Amateur Radio, Performance is equal to a J-pole, but it. Also works quite well as a VHFUHF public service band scanner antenna. 51 at the lowest edge and around 1. 136kHz 160M 80M 60M 40M 30M 20M 17M 15M 12M 10M 6M 2M 440Mhz 220MHz 900MHz GHZ. Although not designed as a 440 70cm antenna, it works pretty good anyway. 440 band is generally around 2. It also features a home-brew antenna window demarc . 51 at the lowest edge and around 1. A vertical antenna (effectively half a dipole operating against a ground plane) is resonant at one-quarter wavelength. There will be some resistance as the foam spaces pass the first opening. Of course you can pick your own band by simply changing the frequency to say 145. The goal here is to put up a cheap, easy, and quick 2-meter antenna that is simple and unobtrusive, but works quite well. All that was left to do was to adjust the length of the 12 copper wires to tune the antenna. 286 subscribers. Trace the path of the satellite&39;s orbit. 2 Meter 440 Vertical Dipole Antenna Project by W7LPN W7LPN 2m440 vertical dipole The project below is my own design for a dualband vertical dipole for 2 meters and 440. I&39;ve had one for several years. Drill the bracket. It covers 2 meters and 70 centimeters. Here i present all steps to build this antenna. 51 at the lowest edge and around 1. 55 6. It is made from 10&39; of 12" copper tubing, a couple of fittings, a coax connector, and a piece of 14 gauge copper wire. Since the input side will be 50 ohms, powers of up to 500 2 50 5kW are possible with these connectors. 7 m boom length for the lower 144 MHz SSBMGM band, in PDF Format. The best antenna is the one you just made a contact with. In use, it makes for a very effective antenna and provides about 3 db of gain with a low take-off angle. I used 1 thin-wall PVC pipe, aluminum tape, and RG-8X coax. Here i present all steps to build this antenna. For final mounting, attach the antenna to a " wooden dowel using tie wraps about every 3 inches. 160 metre 38th Wave Antenna -- By Brian Smith. 95 is a bargain and an excellent antenna. All you need is a vertical element cut to the correct length and some kind of metal ground plane or counterpoise to complete the antenna. VHFUHF Long Yagi Workshop Yagi plans and notes for 6m, 2m, 70cm and 23cm Vertical antenna for 2 mt and 70cm. More information on my website at httpwww. 51 or less SWR 144-148440-450MHz 21 or less SWR 140-160435-465MHz Gain 3. I have my el cheapo Baofeng BF-8HP handheld radio. 2 GHz (1) 2. The Yagi antenna&39;s overall basic design consists of a "resonant" fed dipole (the fed dipole is the driven element and in the picture above and the second from the left side), with. Arrow antenna makes a 2m440 j-pole, which at 49. Moreover this antenna, while dismounted is just 1 meter long, and the total weight is just 100 grams. Cebik web site requires registration (free) Commercial 2M 70cm Slim Jim N9TAX. A great lightweight option that can handle mobile rigs on lowmid power in most applications. The articles present designs and construction techniques for inexpensive and easy to build antennas that will make perfect first projects. The antenna is broad-banded and should therefore provide a low SWR across the entire 2-meter band. We appreciate Scott, NA4IT sharing it with us. cx Back. Dave shows how an old coffee can can be repurposed as a home made 2 meter70 cm antenna. "Bottle" Antenna for 145 MHz by RA1TW. Larsen NMO270B Dual Band Coil and Factory Tuned Black Whip for 2m70cm Amateur Radio Frequencies, BLACK with NMO VHFUHF antenna, Connector NMO, . The entire 2m band is typically under 1. 5 to 1 with the best point is under 1. The driveway is sloped so it doesn&39;t stand straight, but it is fine on a more. Tuned to 2 Meter Ham Band Each antenna is tuned to the 2 Meter Ham Band centered at 146 MHz. 1, sometimes much less. UHF 440-470 MHz Slim Jim Antenna 42. The best antenna is the one you just made a contact with. Although 332-inch rod is preferred for the 144-MHz antenna, 10 or 12 copper wire can also be used. 2 MHz with the respect of SWR of 21, which is more than enough for the 70 cm band (430-440 MHz). Prepare the coaxial cable. 1, sometimes much less. Whether you are operating portable or permanent, you will find the convenience of a dual-band Log Periodic antenna to be an incredibly convenient and powerful tool in your ham operations. We offer a huge selection of Yagi antennas, including cross-polarized and circularly polarized, from top brands like M2 Antennas, Cushcraft, MFJ, and Diamond Antenna. I used 1 thin-wall PVC pipe, aluminum tape, and RG-8X coax. Ham radio antenna. Gain on 2m 2. Figure 1 Basic 2M Slim Jim Antenna Key features are Good radiation efficiency, because of low angle radiation Unobtrusive No ground plane radials, so wind resistance is low Rugged Construction no radials to break or bend Fully weatherproof 50 input impedance Low VSWR 1. spn 96 fmi 5. Antenna, Vertical, UHF Base, 70 cm, FiberglassAluminum, 250 W, 8. . knowledge matters player management sim answers