air frequency

Making a half wave coax cable - How to make a half l or quarter l coax cable for a specific frequency

Multi Band Antenna Traps - These devices are called Traps, but they are actually more like frequency sensitive switches. They are parallel resonant, high Q, tuned circuits which provide a very high impedance at their frequency of resonance.

K4ICL repair service - Vintage radio repair and refurbishing services

PJ – Bonaire - Noah, K2NG, has started a new Rent-a-QTH in Netherlands Antilles

The Considerate Opertator's Frequency Guide - An ARRL guide to where on the HF bands various modes and activities are generally found.

Southern California Repeater and Remote Base Association - SCRRBA is a volunteer organization providing coordination of a number of heavily utilized amateur radio frequency bands in Southern California.

220 MHZ Spectrum Management Assn - Amateur radio spectrum management and frequency coordination entity for 219

W6AB Mount Desert West - Satellite Amateur Radio Club, W6AB, located on beautiful Vandenberg Air Force Base, on the California Central Coast.

T.A.S.M.A. - Amateur radio spectrum management and frequency coordination entity for 2-meters in southern california.

W0SV St. Cloud Amateur Radio Club - Welcome to w0sv, the st. cloud amateur radio club. here, you will find information about the club, it's events, hamfests, on-air activities, and membership.

ScanGilmer - Scanning Gilmer County, Georgia Sheriff, Fire, EMS, and Air Traffic

The Caltech Radio Frequency and Microwave Group - Develop microwave amplifiers and related products

Madell Technology Corporation - Makers of oscilloscopes, spectrum analyzers, frequency counters, power supplies and more testi equipment products

ACE-Co Frequency Counters - Handheld radio frequency counters (1Mhz-3GHZ)

850 Repair Page - This page is dedicated to helping Kenwood TS-850 owners keep their radios on the air.

Two Kenwood TS850 modifications - Here are two simple modifications / repairs for the Kenwood TS850 HF transceiver, dual receiver mod, and battery pack replacement

Cushcraft R5 maintenance - Maintenance and repair of a Cushcraft R5 vertical antenna

Scanning Tasmania - Frequency and scanning related information for scanning in and around Tasmania!

N1EQ Mike Nadeau Repair Service - Specialize in servicing modern HF/VHF/UHF multimode transceivers and receivers Icom, Kenwood, Yaesu, and a few others

AVVid - Quality repair of Kenwood and Some Icom equipment

The RF Shop - Repair HF, VHF and UHF amateur equipment and provide complete repair service for All Audio and .PA Equipment.

Columbia Electronics International, Inc. - Military radio sets for land, sea or air from new current production, unused or rebuilt u. s. military surplus and their accessories and spare parts since 1946 your reliable one stop source.

Virtual Legacy Radio - Windows remote control for Yaesu or Icom. Displays the current transceiver settings frequency, mode, and others on the PC in an old-fashioned way that corresponds to the look of receivers in 70's. DX-Cluster Watch (DCW) is an application that automatically refreshes a web page with the dx-cluster content, parses spot lines from it, keeps a consolidated list and inserts the spots to VLR as frequency markers by OK1FIG

Online Calculators for Radio & Electronic Design - Online calculators for toroid coil, air-core coil inductance, XL, XC, and more.

Sci.Electronics : RFI/EMI Info - Dealing with Computer generated RFI/EMI by Daniel 9V1ZV