vhf maps

2m VHF antennas with high gain - 2m SSB/CW-12.5 Ohm Yagis with extrem high gain and small bandwidth. These Yagis were constructed as ultra-light, portable Yagis with extrem high gain. They have small bandwidth and are working from 144,0-144,8MHz with good SWR.

A two band halo for VHF Mobile - 50 and 144 Mhz with a single mobile antenna system

VHF UHF antenna for mobile transceivers - A whip antenna for VHF and UHF handhelds or mobile radios

Secrets of a Successful Stealth Operator - N5IW ideas to build your own antenna in a restricted lot, or a stealth antenna. Includes PPT files of HF and VHF stealth antennas.

K8GP Delmarva VHF and Microwave Society - K8GP web site, home of the Grid Pirates Contest Group.

CQ Contests Rules and Awards - CQ Contests rules, CQ World Wide 160-meter Contest CQ World Wide WPX Contest CQ World Wide RTTY Contest CQ World Wide RTTY WPX Contest CQ World Wide DX Contest CQ World Wide VHF Contest

LA0FX Contest Logs - Offer various contest logging programs, for scandinavian contests, SPDX, PAXX, OK/OM Contests, IARU VHF Contest, Portugal Day DX contests, HSC contest, various polish and norwegian local contests and other utilities

IOTA maps - QSL and Map gallery of IOTA islands all over the world

6 Meters and Up: SSB/CW DX - This is a group for amateur radio operators interested in VHF and UHF SSB and CW, primarily in North America. It's intended for general discussions of V/UHF operation, beacon information, reports of tropo and Es openings and anything else of interest to V/UHF DX enthusiasts

CommsAudit - Commsaudit uk, i/q quadrature , hf receivers, rf, multicoupler, multicouplers, switch matrix, antenna matrices, masthead amplifier,, vhf receiver, uhf,

Amplitec linear amplifiers - HF VHF UHF amplifiers, designed by hams for hams, and morse keys manufacturer

Stealth Telecom - RF engineering solutions, HF VHF antenna systems and radio communications equipment.

Q-MAC - Tactical Radios Manufacturers of HF and VHF Transceivers, NVIS Antennas, Portable and mobile antennas for military and commercial use.

Gateway Electronics - Amateur radio kits, cw keyers, vhf mini receivers, 2 meter preamplifier and more audio related kits, based in St. louis, Mo and San diego, ca USA

Local Area Communications - Communications for short distances can be done in VHF or in HF mode, here is explained the differences.

IPS - HF Systems MUF maps and prediction charts - These pages provide general propagation advice for HF communicators. Information available includes inferred global propagation conditions, real time HF fadeout coverage charts, regional ionospheric vertical MUF maps and Hourly Area Prediction charts for Astralia and Asia, Europe and North America

APRSa4 - APRS+SA does most of the functions of the original APRS(tm) with a big difference: The maps it uses to plot the locations are Street Atlas 4.0 or 5.0 Maps. This allows great precision in locating objects and stations.

SEP Win - VHF Propagation Analysis Software for the Radio Amateur by K9SE

Voice descrambler - This program descrambles band inverted encrypted transmissions, usually found on VHF/UHF. It uses a NCO (numerical controlled oscillator) to re-produce the originally inverted audio band. Use it only if legally permitted in your country. I assume no responsabilities deriving from its use. Standard disclaimer applies

GM3WOJ Amplifiers page - HF and VHF amplifiers homebrewed by GM3WOJ

PA7TA RF Amplifiers - VHF UHF Amplifiers

KI0LE Amplifiers and Preamps - Picture gallery of vhf uhf amplifiers

50 MHz GS35b Power Amplifier - OZ1DPR six meter power amplifier using the russian VHF triode GS35b

144/430 Duplexer - Schematics for a VHF UHF duplexer

Duplexer for VHF and UHF - Duplexer to use two transceivers and one antenna VHF UHF in spanish