vhf coverage prediction

The VHF Quad Beam Antenna - Homebrew a 4-element VHF adjustable antenna built entirely of wood by ka1fsb

3 elements VHF yagi antenna - 3 elements VHF Yagi homebrew antenna designed with YAGIMAX 3. Maximum forward GAIN is about 8,17 DBi. This antenna offering an effective radiation power 4 times greater of the transceiver output by SV1BSX

Random wire Unun - Get all band coverage with a single wire and the icom 703

VHF Antenna in a Lunchbox - The magnetic loop on two metres

Vipormutant antenna by ON6MU - A Versatile Innovative Portable Multi-band Tunable Antenna can work HF VHF and UHF ideal as portable or balcony antenna

6 element yagi for 144 mhz - A 6 elements VHF Yagi antenna designed with YAGIMAX 3 and made by SV1XY with excellent results on local and satellites contacts like UO-14 and AO-27

VHF/UHF Folded Diplole - This is a two element colinear design for vertically polarized radiation. It may be constructed for use on either 2m or 70cm

LYAC VHF Contest - The main purpose is support for LYAC contest - publishing of results, news for participants. Discussions about VHF contesting and amateur radio VHF are welcome as well.

OK0EZ VHF UHF Beacon - 144,470 MHz / 432,870 MHz Rabstejn Czech republic

WA3TVG The Laurel Highlands VHF Society - The Laurel Highlands VHF Society, Inc. owns and operates the Acme repeater, located on the Chestnut Ridge in southwestern Pennsylvania.

W3PGH Greater Pittsburgh VHF Society - A Nonprofit Society Dedicated to Furthering the Interest of VHF/UHF Operation in the Greater Pittsburgh Area.

Crambr.org - CRAM - Clube de RadioAmadores de Americana cover d-star, repeaters and VHF UHF activities in Brazil.

DVX Project - Digital Voice Transceiver Project This Project began to explore the use of the DVSI AMBE 2020 voice compression chip and also the ADF7021 single chip VHF RF Transceiver from Analog Devices.

K6MDD Mt Diablo D-Star - Mt. Diablo D-Star System is situated on the North peak of Mt. Diablo in California's East Bay 33 miles east of San Fransisco. At 3,600' the K6MDD System has excellent coverage of most of the Bay area !

HF Packet Operations - Hints and guidelines for operating packet radio mainly for HF, but may apply to VHF too by ka1fsb

Rhode Island Amateur FM repeater service Priority listing - This website explains coverage and construction for our repeaters. Includes useful links and an insight into the Ham community in Rhode Island

Communications via aircraft reflections - Using aircraft as reflectors for amateur radio vhf communications by Lionel Sear, G3PPT

Kenwood TH-F6A TH-F7E Manual - The english version of the TH-F6A or TH-F7E VHF UHF handheld transceiver manual in pdf format

FT-847 General Coverage Mod - General Coverage TX Mods by G1IVG.

Amateur ( HAM )Radios Comparison Charts - Comparison chart of most popular VHF UHF amateur radio transceivers

MiniErrorCorrection Program - This simple program was written as a possible utility for those attempting to communicate using digital modes via paths that are intermittent and tenuous such as Aircraft Scatter at VHF and Low Earth Orbiting Satellites by G3PPT.

SPLAT! for Windows - This free software is useful for visualizing terrain and performing Longley-Rice path loss and coverage prediction using the Irregular Terrain Model. A Windows port of the Linux-based SPLAT by John Magliacane.

A 20W Amplifier for 2 meters - VU2RAR basic VHF power amplifier suitable for 144-146 Mhz output power can vary from 3 to 25 Watts.

Harmonic Converter for Spectrum Analyzers - Extending the frequency coverage of spectrum analyzers, Harmonic mixer by Matjaz Vidmar, S53MV

Vhf receive converter