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For VHF or UHF antennas, the solution is fairly simple. Since these antennas are short, they can be mounted at the back of the house where they cannot be seen from the street. A Comet GP-1 base antenna, at just over 4 feet high, can be easily placed on the back side of a roof and give you good 2m/70cm coverage.However, if the only repeater you intend to use from your home is a 2m machine, and you have no interest in other VHF/UHF band operations, then a single band VHF antenna may be your choice. (Ditto for only 1.25-m, 70-cm, or 6-m band ops). Consider the local radio resources available to you and how you wish to use them, and then decide what band ...Figure 3: 2m dipole or J-pole (free-space) vertical radiation . pattern (black) and the same antenna on 70cm (red). Fortunately, there is an easy solution. Install 70cm stubs on the 2m antenna to create a good UHF radiation pattern. Many commercial HF antennas use this technique to achieve good patterns on their multi-band antennas.I show how to use stainless steel TIG welding rods (can be done with other materials as well) to make antenna elements for home built 2m / 70cm antennae such...A ground plane antenna for 2m or 70cm is one of the simplest antennas to build and get working, and it can work quite well for repeater or simplex operation. It is easy to build for other bands as well. ... Using junction blocks to build the hub of a VHF ground plane antenna. The individual metal pieces are removed from the nylon housing and ...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). This antenna can …You could go higher with yours and get better performance. And if you want a better antenna, and you want to make it, you can't go wrong with a collinear. (Or even store-bought, your choice.) Build a tape measure beam! …Building dualband 2m/70cm 3 Elements by 5 Elements Dualband Yagi. If antenna is expensive no problem home brew it yourself. Antenna plans is available at my ...Construyo, a Berlin-based startup that offers a “holistic” project management service that connects the architecture, engineering and construction (AEC) industry, has raised €2 mil...Homebrew 70cm (430 MHz) antennas. 70cm is a good band for experimenting with antennas. Unless you need very high gain the antennas are small. This means that you can experiment without fear of …Registered users are allowed to subscribe to specific review topics and receive eMail notifications when new reviews are posted. Review Summary For : Larsen glass-mount dual band antenna. Reviews: 31. MSRP: 80 approx. Description: Larsen's version of the thru-glass VHF-UHF mobile antenna. Product is in production.This time, Dave uses common materials from around the house and workshop to design, build, and use a simple 2 Meter Yagi Antenna made from metal coat hangers. Since metal hangers are getting rare these days, you can use brass rods, copper wire, or even the old aluminum elements from an outdoor television antenna.BUILD AN HF ANTENNA TUNER MAKE A HOMEBREW HF-VHF ANTENNA TUNER ... 80m - 2m. 100W PEP - 30w carrier. just a simple tuner. Tuner mark 2. 500m - 70cm. ... Normal use will be HF and perhaps some circumstances in VHF bands. I have tuned my HF antenna to 70cm but only as a test.On most of the J Pole designs out there, a choke should be used as close to the feedpoint of the antenna as possible to help prevent rf on the feedline and creating difficulty with SWR readings. For 2 meters, the coil is 4 turns of coax at 5 inches in diameter. You should get good results with the choke within 3 or 4 inches of the feedpoint on ...Thanks to radio amateur Dave Tadlock (KG0ZZ) for this simple, effective VHF/UHF (2m/70cm) ground plane antenna. Most of the materials can be found at the nearest hardware store or building supply outlet. The antenna is perfect for local traffic and ragchew nets, as well as portable and emergency use.The antenna is dual banded to operate on 70cm using the same sleeve technique as used on the dual-band basic Flower Pot. This results in the antenna operating with four half-waves in phase on 70cm and provides a theoretical antenna gain of 6dBd on 70. Dimensions shown are for a 1st build prototype from a concept drawing and have yet to …2M Quarter Wave Ground Plane Antenna - Ham Radio - TheSmokinApeIn this video we build a DIY 2 Meter Quarter Wave Ground Plane Antenna. Please leave any quest...Oct 31, 2015. #2. 2 meter antenna. If you want a 2 meter buy or make one. Cut five 19 inch coat hangers, get a male pl 259 and make a ground plane.. One in the top and 4 radials in the other holes at 45 degrees.This Parts item by BarberTechnologies has 244 favorites from Etsy shoppers. Ships from Warren, OR. Listed on May 16, 2024.10000+ "70 cm antenna" printable 3D Models. Every Day new 3D Models from all over the World. ... Tags 2m or 70cm Ground Plane Antenna Bracket , , , , , Download: for sale Website: Cults. add to list ... Tags DIY Parts 2 70 Yagi antenna design , , , Download: free Website: Thingiverse. add to list Tags 2m 70 mobile ...Halbwellenstrahler auf 2m. b schwingt bei 70cm und verhält sich daher wie eine koaxiale Kopplung zwischen a und c, die bei 70cm ein Halbwellenstrahler sind. Zur optimalen Anpassung an 50 Ohm gibt es den Impedanzwandler, bestehend aus d und e. Die Länge von d und e ist eher kritisch, durch Variieren kann man ggf. das SWR verbessern.

Amazon.com: Diamond Antenna SRH770S Dual Band 2m 70cm Antenna with SMA-M Connector, 27.6" Long, 10W Max Power Handling : Electronics ... Build quality is very good. 73's. Read more. One person found this helpful. Helpful. Report. Ev. 5.0 out of 5 stars First one broken. Replaced and going great! Reviewed in the United States on May 10, 2020.This page allows you to calculate the length for a 5/8 wave antenna. It uses the standard formula, 585/f (178.308/f for metric) MHz to calculate the element lengths. If you've experimented with 5/8 wave antennas before and know of a better formula for your QTH, feel free to change the formula to suit. This formula is for a wire antenna.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; Build the 5 Elements 2m VHF YagiIn this quick video, Jim (AG6IT) shows us how to change a piece of unwanted gear into something useful. Here are some comments from Jim: a 40 inch slot cut in a parabolic dish, fed with a so239 jumper about 4.5 inches from the end of a slot, yields a stealthy antenna which can be used for 2m and 70cm. Vertically polarized and blends in nicely.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; …

Just got my General license to operate on the entire 10 meter band, so I went for a four band antenna such as this and gave it a shot. it's useable on 70cm except near the end of the band, useable on the entire 2m band, but it's not very efficient, useable towards the CW portion as a terrible 6m antenna, and a very narrow bandwidth on 10m ...DIY dual band antenna1 rg 58 connector10 turns of 2.5mm copper30cm brass stip10pf cappacytor…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. DIY 100watts RF dummy load. Diamond F22 restorat. Possible cause: The antenna has an SWR of roughly 1.8:1 at resonance (see Figure 2). However, the SW.