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SWR across the 2 meter band is 1.1 to 1.4 with most of the band covered at 1.2 or below and 1.1 or less from 146.0 up. SWR on 70 cm (420-450 mhz) is 1.7 or less through 433.5, 435.5 through 441.5, and 445 through the top of the band. 435 to 435 tops at 1.9 and 442 to 445.5 tops at 2.2. This is with ZERO tuning done, just tested as built and ...J-Pole antennas for the 2m and 70 cm (VHF/UHF) Amateur Radio bands come in many sizes, ranging from commercial models based on public service designs to homebrewed configurations using coaxial cable, 450 ohm ladder line, or even TV twin lead. Supporting structures can be anything from PVC pipe to wood, including temporary …Member. I'm looking for a suitable antenna for my Jeep, which I use almost exclusively off road. The need is a no ground plane dual band antenna that's capable of transmitting across all 2M, 70cm, and GMRS frequencies. I'll spend most of the time on the 70cm and GMRS frequencies, so 440-470 MHz. Ideally, I'd like an antenna no longer than 36 ...Easy to build antenna for 2 meters. Follow along as i show you how to build a Quarter wave ground plane for 2 meters. From start to finish i walk you thrual...Dualband Antenna’s. 2×4 2m/70cm Compact Satt Comm Antenna; 2×3 2m/70cm Cross Yagi – compact build; Build 3 x 5 2m/70cm Cross Yagi 145-435Mhz; Build the 3 x 5 Elements 2m/70cm Yagi; VHF antenna’s. 2 Elements Yagi 144Mhz; 7 Elements Yagi for 146Mhz band build; 2 Elements Yagi build for 107Mhz FM Band; …This antenna is perfect for those hams living in the primary coverage area of the repeater for 2 meter use. This antenna is nothing more than the old standby "Droopy Groundplane" and can be used on any band where it's physical size does not pose a problem. Remember that the vertical radiator is 1/4 wavelength long at your operating frequency.A simple ham radio 2 meter and 70 cm antenna for fixed or portable use. For details: http://www.amateurradio.bz/2m-70cm_vertical_dipole_antenna.htmlBecause the antenna is hand held, power should be kept to less than 10 watts maximum. If mounted and away from people, maximum power is 150 watts. $132.00. 146/437-10 Solid boom without duplexer. Use two radios with this antenna.=====More information on my website at http://www.fuzzthepiguy.tech=====Here are the measurem...So I built a simple flower pot antenna from PVC pipe and coax. My First Antenna - A Dual Band (2m / 70cm) Flower Pot Antenna. I've bought a few whips for my HTs and thought it was about time I made an antenna of my own. Obviously, the place to start was a dual band UHF / VHF antenna. Design. I picked the flower pot antenna based off the designs ...Krzyki. Krzyki is a former borough of Wrocław located in the southern part of the city. On March 21, 1991, the newly created City Office of Wrocław assumed many of the functions previously carried out within the borough. Photo: Wikimedia, Public domain. Ukraine is facing shortages in its brave fight to survive.Erfahrungen zeigten, dass meine Vorhersagen zum 2m-Band mit ihren Messungen übereinstimmten. Wenn die Antenne jedoch relativ hoch und frei von Hindernissen montiert wurde, stimmten die beobachteten Feldstärken auf 70cm nicht mit meiner Vorhersage eines Gewinns von etwa 5 dBi überein. Normalerweise waren die Signale alle deutlich schwächer.My first dipole antenna with cost breakdown. It comes out to about $40 if you have to buy everything, $12 if you already have some electronic / hobby-type ma...MFJ Pulsar VHF/UHF Base Vertical Antennas MFJ-1538. Antenna, Vertical, VHF/UHF Base, 70 cm, 1.25 m, 2 m, 6 m, 200 W, Fiberglass/Aluminum, 8.2 ft. Height, Each. Find VHF/UHF Base Vertical Antennas 2 meters Band Coverage and get Free Shipping on Most Orders Over $99 at DX Engineering!A DIY lightweight 2m Moxon antenna. Here is a rough guide to my home brew 2m Moxon (According to some old kitchen scales it weighed in at around 160g, my luggage 'scales' said .2kg, but it only shows up .1kg units ) I built it to take to ZL and VK, so the dimensions were for frequencies a little higher than the UK, although it seems to work ...The first reference that caught my eye was the $4 Ham Radio Satellite Antenna. I saw this web page a couple months ago, and was thinking about building it, but haven’t gotten around to it yet. It looks like a very cool and easy project. One thing I was wondering about is why the 2m and 70 cm elements aren’t perpendicular to one another as ...This is post 2516 in a continuing series of simple ham radio antennas. Here are some general comments from Robert: In this video I give an overview of the design and use cases for 2 distinct eggbeater antennas, a DIY eggbeater V2 antenna and a commercially produced eggbeater antenna from M2 Antennas, both designed for 435 MHz and have right ...Watch how Pablo Sala, a radio amateur from Argentina, demonstrates the use of a fox hunt coax loop antenna for direction finding. Learn how this simple and portable device can help you locate ...Easy to build ham radio dual band 2 meter and 70 centimeter ground plane antenna.%PDF-1.7 %âãÏÓ 25 0 obj > endobj 65 0 obj >/Filter/FlateDecode/ID[57FC9B692A5B484BA9417F19561F3DC6>]/Index[25 85]/Info 24 0 R/Length 162/Prev 1892482/Root 26 0 R ...Description. OSJ 146/440. Dual Band - 2 Meters & 70 cm - Solid Aluminum - End Fed (SO239 Connector Only) OSJ 220. 220 MHz. End Fed (SO239 Connector Only) OSJ - VHF. Wide Band Width (150 - 162 MHz.) Solid Aluminum - End Fed (SO239 Connector Only)2 meter antenna tuner project. October 05, 2022. 2 METER ANTENNA TUNER , ONE EVENING 2 METER TUNER PROJECT, Most active radio amateurs have an antenna transmatch (i.e. "tuner") to reduce swr and provide an impedance match to their transceivers.

It is a 2-element Moxon yagi for the 2-m-band, which has been supplemented by two further elements to form a dual-band directional antenna for the 70-cm-band. The additional elements are only parasitically fed, the 70 cm radiator is used as an open-sleeve element. The development goal was to have a directional antenna that was as small as ...Re: Homebrew 2m, 70cm mobile antenna. by knight » 11 Feb 2010, 17:17. First the photo is a heldhold mobile radio and the antenna is for a mobile radio. I am trying to build a antenna for the roof of a car which I did say a mobile car antenna for the roof of a car not heldhold. knight.This antenna is perfect for those hams living in the primary coverage area of the repeater for 2 meter use. This antenna is nothing more than the old standby "Droopy Groundplane" and can be used on any band where it's physical size does not pose a problem. Remember that the vertical radiator is 1/4 wavelength long at your operating frequency.What you'll need to make a Slim Jim: Some balanced ladder line feeder - either 300 or 450 ohm will do - If making an antenna for 145MHz, then you'll need a length of 1.5 metres. For other frequencies, use the calculator later in this article. Some co-ax long enough to reach from the base of the slim jim to your radio.

Bandwidth is normally 10 MHz on the 70 cm (440 MHz) band and 25 MHz on 23 cm (1200 MHz), making the antenna an excellent candidate for ATV repeater use. Many improvements have been made since my original article "Omni-Gain Collinear for 70 cm and 23 cm" was first published in the May 1982 issue of 73 magazine. Concept of ConstructionThe antenna is constructed from M4 stainless steel threaded rods, as they are relatively inexpensive and common place at most DIY stores. Additionally, it is an easy material to work with and does not require any special tooling. The boom is constructed it from 10mm2 aluminium box section, again it's cheap and stocked in most DIY stores.…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Diamond X-30 Antenna and Mast. The last piece of the setu. Possible cause: What you'll need to make a Slim Jim: Some balanced ladder line feeder - either 300 .