The articles present designs and construction techniques for inexpensive and easy to build antennas that will make perfect first projects. 440 band is generally around 2. Slim Jim 2M Antenna SV5BYR. Ham radio antenna. 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. I also ordered the roll up storage bag with the pockets that is made in the U. For 19. In fact, when used on your HT, it will. 2 Meter Slim Jim Antenna using 300 Ohm Twinlead. 95 is a bargain and an excellent antenna. It requires a balun and works very well. Homebrew 2 meter Yagi construction. Although 332-inch rod is preferred for the 144-MHz antenna, 10 or 12 copper wire can also be used. 5 dBi; Max Power 200100200; Overall length is 37. 99 You Save 9. 51 at the lowest edge and around 1. 5 to 1 with the best point is under 1. Modern 2-meter rigs can handle this easily, and the losses are quite small at an. VHF 144-148 MHz 8. 2 meter 144, 146, 148 MHz 100 W Band-Pass filter with high suppression out of band signals. 5 dBi; Max Power 200100200; Overall length is 37. 440 band is generally around 2. "Bottle" Antenna for 145 MHz by RA1TW. Simply put, it's a 58-wavelength vertical telescopic whip with four 14-wave telescopic whips serving as a ground plane at the base. Measure and cut the brass rod. For a discussion of NVIS, see www. 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. 2m Projects - Omnidirectional Vertical. Antennas, 20-Meter Extended Double Zepp Antenna With Enhancements, A, Houf (K7ZB), CQ 2017, Feb, p K5QYS ANTENNA PROJECTS-OVER 30 YEARS-3) 2-Element 160 m Phased Verticals Virtualbox Macos Catalina. 2M Slim Jim antenna using Aluminum Tubing. Figure out where to point your antenna. I used 1 thin-wall PVC pipe, aluminum tape, and RG-8X coax. 95 is a bargain and an excellent antenna. All articles are in Adobe PDF format. 100" overall height. Shop now. 7dB Gain 3 Section Fiberglass 200 Watts 50 Ohms 58 Wave. 2 MHz with the respect of SWR of 21, which is more than enough for the 70 cm band (430-440 MHz). F4HWK Add Tip Ask Question Comment Download Participated in the Invention Challenge 2017. Likes 592. 5 dBi; Max Power 200100200; Overall length is 37. When I setup in a park I use a homebrew inverted V with 28' pole. 2M Slim Jim antenna using Aluminum Tubing. The shield of your coaxial feed line might serve this purpose. Cebik web site requires registration (free) Commercial 2M 70cm Slim Jim N9TAX. Fast & Free shipping on many items. Its resonant on the 2M frequencies. It requires a balun and works very well. Quad Dimensions The Formulas for calculating quad element lengths (in centimeters) are as follows Reflector Element (L) 78. 00 - 46. Homebrew 2 meter Yagi construction. I love it There&39;s nothing in my book that&39;s as fun as experimenting with antenna designs. 2 Meter Slim Jim Antenna using 300 Ohm Twinlead. Seriously, if you are not on a budget, Diamond and Comet make excellent 2m440 antennas in several gain configurations. In this case there is seven 12 half wave elements, plus 14 wave ones on the top and bottom. There are 118. Mount bracket to conduit. 2 Meter Antenna for Bicycle Mobile Operation. Either method is suitable for these antennas. More information on my website at httpwww. 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. Home; About; Columnists. Copper pipe dipole antenna construction for 2 Meters. 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. This is a dual band Amateur Base Antenna. 0 MHz) and 40 meters (7. I used 1 thin-wall PVC pipe, aluminum tape, and RG-8X coax. Jul 5, 2015 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. I&39;ve had one for several years. I wanted an antenna that was simple, horizontally. A clearly explained, step-by-step procedure that will have you on the air with a fully functional 2 meter70 cm antenna in a short time. 220 antennas are hard to find. Alaskan Arrow LEO Satellite Antenna - 4 Elements for 2 Meters crossed with 10 Elements for 70 cm 121. For my first duplexer in the 1990&x27;s, my interest was the 420-450 MHz amateur UHF band, 70cm. 51 at the upper edge. 1-16 of 276 results for "2 meter 440 antenna" RESULTS Price and other details may vary based on product size and color. 15 dBi, Type N. I used 1 thin-wall PVC pipe, aluminum tape, and RG-8X coax. Its resonant on the 2M frequencies. 51 at the lowest edge and around 1. The handbook also states that this design should perform as well as or. Bazooka Antenna Design from WE6W Beverage a short beverage design by K3KY Broomstick Special compact, easy-to-build. 51 on either band with 440 being slightly better. 95 is a bargain and an excellent antenna. 51 at the upper edge. The QM7 antenna is a simple 7 elements Yagi with 3. To do the antenna takes a half of hour and to tune the antenna also takes a half of hour. Slide the coax through the PVC pipe and connect to your SO-239 connector. In fact, when used on your HT, it will. 95 is a bargain and an excellent antenna. I&39;ve had one for several years. 160 Meter Antennas. 2m Projects - Omnidirectional Vertical. Homebrew Coaxial Dipole for VHF or UHF by W6NBC Heres a base station antenna you can easily build for 146, 220 or 440 MHz. This is a great starter antenna that can be handheld without being too unwieldy, and while it has modest gain it should be enough for you to accomplish both your goals with very little work. Even easier to construct is a single-band, half-wave dipole, and you can also find plans online for 2-m70-cm dual band dipoles. The best antenna is the one you just made a contact with. Thanks for the early reply. Sep 22, 2015 &183; The entire 2m band is typically under 1. You now need to secure the top of the antenna with the top copper cap. 1, sometimes much less. Shares 296. 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. This easy to build dual band VHFUHF antenna makes a great project for the new ham that is ready to get on the 2 meter and 70 centimeter amateur radio bands. 45 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. 2m Projects - Omnidirectional Vertical. Hustler Base Model G6-440 Vertical Antennas G6-440. Gain on 2m 2. Low-loss antenna relay. See more ideas about antennas, ham radio antenna, ham radio. 51 at the lowest edge and around 1. NOTE Comparative testing of this antenna against one without the "choke" showed that the choke is NOT needed. This is a great starter antenna that can be handheld without being too unwieldy, and while it has modest gain it should be enough for you to accomplish both your goals with very little work. I like to tinker, so when I finish one project, I go on to another, even if it works well. connector 30. This (male to male) connector is where the. NC Scout - Senior Leader; Jesse James - Senior Editor; Patriotman - Senior Editor (Social Media, Marketing, and IT). 51 at the upper edge. Slim Jim 2M Antenna SV5BYR. The antenna is broad-banded and should therefore provide a low SWR across the entire 2-meter band. 2 long. 6 dB gain on 144-148 MHz and 8 dB gain on 440-450 MHz. 132. Crossbanding works most excellent. 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. The project below is my own design for a dualband vertical dipole for 2 meters and 440. Any amateur can do the antenna during one hour. On 2 meters, this antenna will give you roughly 6dB gain over a full size dipole (6 dBd) , and probably 12 dB over the stubby rubber duckie antenna that probably accompanied your handheld transceiver. This antenna is just a 14 wavelength resonator for both UHF and VHF band. 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. 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. Of course you can pick your own band by simply changing the frequency to say 145. Sep 22, 2015 The entire 2m band is typically under 1. It may not be possible to obtain a wooden dowel for the complete length so attach two dowels together by using a 1 inch sleeve of 516" tubing and crimping the tubing at each end. 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. The "Slingshot" Antenna for 2 Meters Re-edited by N4UJW from an original article by David Younker KA8OGD (callsign no longer active) 73 Magazine April 1989 While recently going thru some of my old ham radio magazines, I ran across this inexpensive and easy to build antenna project for 2 meters. 95 165. Then remove the string. Loop-On-Ground Antenna Part 2 I don't understand all the electrical interrelationships but a long posting at RadioReference. 100" overall height. 51 at the lowest edge and around 1. Senior Team. In use, it makes for a very effective antenna and provides about 3 db of gain with a low take-off angle. Arrow antenna makes a 2m440 j-pole, which at 49. 5 dBi; Max Power 200100200; Overall length is 37. The DxZone has nearly 600 Antenna Articles ARRL Antenna Projects Web Page-- Includes BeamsYagis, Dipoles, J-Poles,. I also ordered the roll up storage bag with the pockets that is made in the U. The 2 Meter band tape measure beam antenna is a 3 element Yagi with about 7. 2 long. 55 6. 00 - 46. It covers 2 meters and 70 centimeters. 220 antennas are hard to find. A great lightweight option that can handle mobile rigs on lowmid power in most applications. Clamp the junk-box section in vise to saw rod. 6 dB gain on 144-148 MHz and 8 dB gain on 440-450 MHz. To do the antenna takes a half of hour and to tune the antenna also takes a half of hour. antenna which covers the VHF (2 meter), 220 MHz, and 70cm amateur band. It requires a balun and works very well. FOR HAM HOMEBREW ANTENNAS CHOOSE YOUR AREA OF INTEREST THEORY MAJOR ANTENNA PAGES GENERAL STEALTH TOWERS BOOKS ANTENNAS BY BAND 136kHz 160M 80M 60M 40M 30M 20M 17M 15M 12M 10M 6M 2M 440Mhz 220MHz 900MHz GHZ ANTENNA TYPE ALPHABETICALLY A BCDEFGHIJKLMNOPQRSTUVWXYZ HF MULTI-BAND & TRI-BANDERS. Designed by John Stockley G8MNY. I too have made several verticals for 2m & 440, and . Dipole Antenna. 5 dB increase in gain. Home-brew Compact 6dBi Collinear Antenna (first published September 2005, details of higher-gain version added July 2013) This page details the construction of an easy-to-make collinear 360 degrees omni-directional, vertically polarised, antenna for 802. A great lightweight option that can handle mobile rigs on lowmid power in most applications. 2229 meters or 223 millimeters or 8. Each wire is 19. 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. Any amateur can do the antenna during one hour. Mount bracket to conduit. Moreover this antenna, while dismounted is just 1 meter long, and the total weight is just 100 grams. The 1 wave antenna has two strikes against it. Find this Pin and more on Ham Radio --- AJ4RF by Al Roxburgh. The center section utilizes a 12" NIBCO CPVC SxSxS Tee purchased at Home Depot. Antenna Specs & Features; 2. Then sketch it out. A PLC-259 or BNC connector will both handle 500 volts. Elements 3 elements on 2 me. 100" overall height. To make a coupling, cut off about 4" of the old element and solder it up inside the top copper cap. On 2 meters, this antenna will give you roughly 6dB gain over a full size dipole (6 "dBd") , and On 2 meters, this <b>antenna<b> will give you roughly 6dB gain over a full size dipole (6 "dBd") , and probably 12 dB over the stubby "rubber duckie" <b>antenna<b> that probably accompanied. (by IZ2UUF). Gain on 2m 2. Great deals on 2 Meter Base Antenna. techHere are the measurem. I bought a roll of 12 gauge solid copper wire, a bulkhead cable connector and some small bolts and eye ring connectors for parts. 144 Mhz crossed Yagi - An homebrew crossed Yagi antenna for two meters band based on DK72B design with pictures, detailed description and tricks by Barry Zarucki M0DGQ Hits 2231 Votes 11 Rating 5. 5 to 3 amps using SSB (based on the average human voice without compression). Dec 18, 2012 1. spn 96 fmi 5. 1, sometimes much less. 18&189; About 10 7&189; 144 MHz &188; wave, 440 MHz &190; wave 440 MHz &188; Wave Doesnt matter. Page 2. Likes 592. Antennas, 20-Meter Extended Double Zepp Antenna With Enhancements, A, Houf (K7ZB), CQ 2017, Feb, p K5QYS ANTENNA PROJECTS-OVER 30 YEARS-3) 2-Element 160 m Phased Verticals Virtualbox Macos Catalina. Homebrew CB Antenna and 2M440 Setup. When I setup in a park I use a homebrew inverted V with 28' pole. Radio Amateur. 440 MHz Amateur Radio J-Pole Antenna 30. Some Notes on the Slim Jim Antenna M0UXB. The best antenna is the one you just made a contact with. 2m Projects - Omnidirectional Vertical. GRA-D220R 1444409001200MHz 2M70cm33cm25cm Mini Discone Multiband Wideband Mobile 4. This antenna offering an effective radiation power 4 times greater of the transceiver output by SV1BSX The Moxon Rectangle on 2 Meters We often think of the Moxon rectangle as strictly an HF antenna. After measuring and before sawing, put 2 nuts on 7&189; end, one nut on 18&189; end. 51 or less SWR 144-148440-450MHz 21 or less SWR 140-160435-465MHz Gain 3. 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. 51 at the lowest edge and around 1. I was. Arrow antenna makes a 2m440 j-pole, which at 49. 2 14 inch x 48 inch Steel rods (I know they'll rust, it's just temporary to get it to work, I'll get aluminum later) I don't have any coaxial cable (don't know the best type to get. 2 Meter Halo Antenna. 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. However, the J-pole&x27;s highly visible profile may be objection-able to some neighbors. A clearly explained, step-by-step procedure that will have you on the air with a fully functional 2 meter70 cm antenna in a short time. SUPER J-POLE ANTENNA. 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. 18m) tall · Three sections · 58 wave 3 elements c-load (2m) and 58 wave 8 elements c-load . 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. The following description should give you guidance on how to build a mobile antenna for HF bands yourself, using a very cheap CB- mobile whip antenna base. Assemble the antenna mount using the 12 hole drilled in the L-bracket. Cebik web site requires registration (free) Commercial 2M 70cm Slim Jim N9TAX. AND N-O-W On to the 440 MHz Yagi antennas Design criteria for a simple 440 MHz antenna They can be made using various materials and in varous sizes. You could build your own. The best antenna is the one you just made a contact with. 1, sometimes much less. The "Slingshot" Antenna for 2 Meters Re-edited by N4UJW from an original article by David Younker KA8OGD (callsign no longer active) 73 Magazine April 1989 While recently going thru some of my old ham radio magazines, I ran across this inexpensive and easy to build antenna project for 2 meters. Dec 18, 2012 1. Go out and listen 10. 2 long. There will be some resistance as the foam spaces pass the first opening. The sealed feed block provides weather protection with minimum wind drag. The 2 meter antenna. Handmade Slim Jim Antenna by. To make a coupling, cut off about 4" of the old element and solder it up inside the top copper cap. Slim Jim 2M Antenna SV5BYR. This is a dual band Amateur Base Antenna. The best antenna is the one you just made a contact with. The center hole for the BNC to BNC connector was already there, but had to be reamed out. 61 in the middle and up to 2. Arrow antenna makes a 2m440 j-pole, which at 49. Drill the bracket. I like this. I used a couple of different antenna calculators to decide on 19 34 as the optimum length of the wires from the feed point. Go out and listen 10. Use the string to pull the antenna up inside the shell. Although not designed as a 440 70cm antenna, it works pretty good anyway. 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. Homebrew 2 meter Yagi construction. on the 70 cm (440 MHz) band and 25 MHz. Fig25Simple ground-plane antenna for the 144, 222 and 440-MHz bands. Antennas, 20-Meter Extended Double Zepp Antenna With Enhancements, A, Houf (K7ZB), CQ 2017, Feb, p K5QYS ANTENNA PROJECTS-OVER 30 YEARS-3) 2-Element 160 m Phased Verticals Virtualbox Macos Catalina. 9 Inch 144245430Mhz Whip Antenna for Baofeng Anytone Kenwood TYT Mobile Radios 4. 51 at the lowest edge and around 1. This antenna is just a 14 wavelength resonator for both UHF and VHF band. The plate is aluminum that is 316" thick and 3" wide x 10-12" long. I used a Radio Shack CB antenna mirrorluggage rack mount because it was the only antenna mount available locally. Home-brew Compact 6dBi Collinear Antenna (first published September 2005, details of higher-gain version added July 2013) This page details the construction of an easy-to-make collinear 360 degrees omni-directional, vertically polarised, antenna for 802. Handmade Slim Jim Antenna by. 220 antennas are hard to find. Modern 2-meter rigs can handle this easily, and the losses are quite small at an. Crossbanding works most excellent. Ham radio antenna. how many parking tickets can you get before your license is suspended. BROADBAND VHFUHF Dual Band Antenna. Slim Jim 2M Antenna SV5BYR. In use, it makes for a very effective antenna and provides about 3 db of gain with a low take-off angle. 66 . 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. For 440 MHz, given the somewhat signficant coax losses already with even perfect 50 ohm radiators, maybe this would not be acceptable for . 2M Slim Jim antenna using Aluminum Tubing. 5 MHz Aircraft Search & Rescue. You could build your own. 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. FOR HAM HOMEBREW ANTENNAS CHOOSE YOUR AREA OF INTEREST THEORY MAJOR ANTENNA PAGES GENERAL STEALTH TOWERS BOOKS ANTENNAS BY BAND 136kHz 160M 80M 60M 40M 30M 20M 17M 15M 12M 10M 6M 2M 440Mhz 220MHz 900MHz GHZ ANTENNA TYPE ALPHABETICALLY A BCDEFGHIJKLMNOPQRSTUVWXYZ HF MULTI-BAND & TRI-BANDERS. Search 20 Meter Vertical Antenna Homebrew Meter Vertical 20 Antenna Homebrew onb. Ham radio antenna. 2m Projects - Omnidirectional Vertical. Modern 2-meter rigs can handle this easily, and the losses are quite small at an. Do you need a simple, easily-built, and highly portable 2 meter antenna for field or emergency work Then, a basic Moxon Antenna is what you need. 5 to 1 with the best point is under 1. Even easier to construct is a single-band, half-wave dipole, and you can also find plans online for 2-m70-cm dual band dipoles. I did not test for directionality. The articles present designs and construction techniques for inexpensive and easy to build antennas that will make perfect first projects. 5 to 1 with the best point is under 1. fat cams at garver lake, unit 3 relations and functions homework 6
A vertical antenna (effectively half a dipole operating against a ground plane) is resonant at one-quarter wavelength. . 2 meter 440 antenna homebrew
2m Projects - Omnidirectional Vertical. You could build your own. 440 band is generally around 2. Slim Jim Antenna Project VU2RMU. aluminum tubes to minimize losses. Getting Started First look at my drawing below, and decide how long an antenna you want to have up, approximately. This antenna was designed for center frequency of 146 MHz and 440 MHz. The Antenna Elmer By AC3L & N3LSS -- Design your own HFVHFUHF dipoles, Folded dipoles, Inverted Vees, Ground Plane, Half Wave Vertical, 58 Wave Vertical, Quads, 2 Meter Beams, Quarter wave line matching and lots more. 5 to 3 amps using SSB (based on the average human voice without compression). When I setup in a park I use a homebrew inverted V with 28' pole. 6 dB gain on 144-148 MHz and 8 dB gain on 440-450 MHz. This is a dual band Amateur Base Antenna. For final mounting, attach the antenna to a " wooden dowel using tie wraps about every 3 inches. 7dB Gain UHF is tunable for either 430 440 MHz or 440 450 MHz 3 Section Fiberglass Radiator 3 58. Arrow antenna makes a 2m440 j-pole, which at 49. 5 to 1 with the best point is under 1. Hustler Base Model G6-440 Vertical Antennas G6-440. techHere are the measurem. Although not designed as a 440 70cm antenna, it works pretty good anyway. Once cut to the correct dimension then the feedline can be attached and the element can be finely adjusted by either a dip meter or some kind of antenna analyzer. 1, sometimes much less. Then remove the string. Senior Team. 5 to 1 with the best point is under 1. 1, sometimes much less. Portable 40 meter vertical antenna build; Wire antenna into tree. 440 band is generally around 2. This is a dual band Amateur Base Antenna. Excellent mechanical properties. DUAL BAND BASE ANTENNA WITH A TON OF POWER This is the best in class for the price. 2dBi Max Power 150 watts Length 40 inches Connector PL-259, fold-over hinge included The CA-2x4SR is a broad-band antenna designed for those needing voice communications on the ham radio. 4" Requires UHF Mount Magnet mountantenna combination for 2m70cm. Ham radio antenna. Mount antenna mount on bracket. You now need to secure the top of the antenna with the top copper cap. I bought a roll of 12 gauge solid copper wire, a bulkhead cable connector and some small bolts and eye ring connectors for parts. Homebrew 2 meter Yagi construction. A vertical antenna (effectively half a dipole operating against a ground plane) is resonant at one-quarter wavelength. 61 in the middle and up to 2. More information on my website at httpwww. Prepare the coaxial cable. 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. 144 Mhz crossed Yagi - An homebrew crossed Yagi antenna for two meters band based on DK72B design with pictures, detailed description and tricks by Barry Zarucki M0DGQ Hits 2231 Votes 11 Rating 5. Whether you are looking for a portable antenna for emergency . PG1N&39;s HAM Radio Site - 2m Projects - Omnidirectional Vertical. 3dB Gain UHF 430-450 MHz 11. It is designed for 2 meter 70 centimeter. DIY 5 Portable VHF Yagi Antenna for the 2 Meter Band (144-146 MHz) by F4HWK In this publication i explain how to build a very light weight, cheap, easy to build and deployable in 30 seconds portable VHF antenna for the 2 meter band. on 23 cm (1200 MHz), making the antenna an excellent candidate for ATV repeater use. Thread-Topic amsat-bb Homebrew Log Periodic for 2 Meters > There was a question recently about homebrewing an Elk type antenna. Elk Antennas 2M440L5 Dual-Band Antenna. I&39;ve had one for several years. 5 to 1 or better across the 2M band. Next up are the ground radials. Even easier to construct is a single-band, half-wave dipole, and you can also find plans online for 2-m70-cm dual band dipoles. UHF 440-470 MHz Slim Jim Antenna 42. 37 inches long, the equivalent of 3. Cebik web site requires registration (free) Commercial 2M 70cm Slim Jim N9TAX. A clearly explained, step-by-step procedure that will. 440 band is generally around 2. Construct two half sections of the dipole using the dimensions in the following image (Image A). Thanks for the early reply. Homebrew 2 meter Yagi construction. 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 . Any amateur can do the antenna during one hour. Crossbanding works most excellent. The best antenna is the one you just made a contact with. PG1N&39;s HAM Radio Site - 2m Projects - Omnidirectional Vertical. Arrow antenna makes a 2m440 j-pole, which at 49. Check SWR again to insure that no connections have separated or shorted. I dislike this. Figure out where to point your antenna. Even easier to construct is a single-band, half-wave dipole, and you can also find plans online for 2-m70-cm dual band dipoles. PG1N&39;s HAM Radio Site - 2m Projects - Omnidirectional Vertical. 45 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. The goal here is to put up a cheap. F4HWK Add Tip Ask Question Comment Download Participated in the Invention Challenge 2017. Sep 22, 2015 The entire 2m band is typically under 1. Build a 2 Meter 54 Wave Antenna. Some Notes on the Slim Jim Antenna M0UXB. 2 meter 440 antenna homebrew. Homebrew Coaxial Dipole for VHF or UHF by W6NBC Heres a base station antenna you can easily build for 146, 220 or 440 MHz. Secure the coax cable. BROADBAND VHFUHF Dual Band Antenna. This is an excellent performing J-Pole type antenna, constructed from readily available materials. PG1N&39;s HAM Radio Site - 2m Projects - Omnidirectional Vertical. This is a dual band Amateur Base Antenna. 7 m boom length for the lower 144 MHz SSBMGM band, in PDF Format. I like to tinker, so when I finish one project, I go on to another, even if it works well. Crossbanding works most excellent. Be prepared and able to communicate in case of emergency with the largest selection at eBay. Although 332-inch rod is preferred for the 144-MHz antenna, 10 or 12 copper wire can also be used. Build a 2 Meter 54 Wave Antenna. 220 antennas are hard to find. Maximum forward GAIN is about 8,17 DBi. Jul 19, 2014. There are several features which make the ubiquitous Twinlead J-Pole antenna a good addition to your emergency grab-n-go kit. 2m dipole antenna. I too have made several verticals for 2m & 440, and . On 2 meters, this antenna will give you roughly 6dB gain over a full size dipole (6 dBd) , and probably 12 dB over the stubby rubber duckie antenna that probably accompanied your handheld transceiver. There are several methods of constructing a vertical dualband dipole and a simple method is. A vertical antenna (effectively half a dipole operating against a ground plane) is resonant at one-quarter wavelength. Then remove the string. Some Notes on the Slim Jim Antenna M0UXB. This is a dual band Amateur Base Antenna. 95 149. I&39;ve had one for several years. techHere are the measurem. "Bottle" Antenna for 145 MHz by RA1TW. 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. 51 at the upper edge. The "Slingshot" Antenna for 2 Meters Re-edited by N4UJW from an original article by David Younker KA8OGD (callsign no longer active) 73 Magazine April 1989 While recently going thru some of my old ham radio magazines, I ran across this inexpensive and easy to build antenna project for 2 meters. It is also equal to 10 decimeters, 100 centimeters and 1,000 millimeters. Homebrew CB Antenna and 2M440 Setup. Its resonant on the 2M frequencies. Is your Ham Radio HT rubber ducky letting you down Do you want to transmit a stronger signal to the repeaters If so, I&x27;ll show you how to build a two meter. "Bottle" Antenna for 145 MHz by RA1TW. 5 to 3 amps using SSB (based on the average human voice without compression). 51 at the lowest edge and around 1. I wanted an antenna that was simple, horizontally. Shop now. 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. Also works quite well as a VHFUHF public service band scanner antenna. Dave shows how an old coffee can can be repurposed as a home made 2 meter70 cm antenna. Sep 22, 2015 &183; The entire 2m band is typically under 1. I bought a roll of 12 gauge solid copper wire, a bulkhead cable connector and some small bolts and eye ring connectors for parts. This plastic tee inside diameter matches the outside diameter of 12" copper pipe. an output low-pass filter to comply with FCC regulations for harmonic and spurious suppression. I like to tinker, so when I finish one project, I go on to another, even if it works well. A vertical antenna (effectively half a dipole operating against a ground plane) is resonant at one-quarter wavelength. These pieces will make up the support boom for the antenna. I have a 58th over 58th vertical collinear antenna hanging in a tree at some 30 odd feet high, but I never heard anything on it, except on FM. 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. PG1N&39;s HAM Radio Site - 2m Projects - Omnidirectional Vertical. 5-3 Three Element Portable Hand Held Yagi - for 121. The best antenna is the one you just made a contact with. on 23 cm (1200 MHz), making the antenna an excellent candidate for ATV repeater use. Oct 29, 2014. Quad Dimensions The Formulas for calculating quad element lengths (in centimeters) are as follows Reflector Element (L) 78. . at overland summit topper for sale