fm antenna/cache

ZL SPECIALE for 10 M - A drawn of a ZL Special antenna for the 10 meter band or 28 Mhz

ZS2FM 50MHz High Gain Antenna - An high gain yagi antenna for six meters band

Simple 75 ohm Coax Balun - A simple current balun for the FM broadcast band

How to Make a Great 9:1 RX Transformer - There are lots of good designs for matching transformers for receiving antennas. Make it yourself it's cheap and easy, and very high performance. This is the design used in the TRX-9 transformers.

Beverage transformer notes - Notes on beverage transformers collected by N1EU

Beverage and transformers - Why Beverages need good transformers by VK3APN

WA9ORC The Chicago FM Club - WA9ORC - Chicago Illinois

Connecticut Valley FM Association - Claremont, NH

The Northern Virginia FM Association - Dedicated to providing superior FM repeater service to Amateurs in the Washington, D.C. Metropolitan area.

PAR Electronics Inc. - Filters for the commercial 2 way market, MATV, FM broadcast, laboratory, marine industry, amateur radio, scanner and short wave. Antenna for amateur radio bands

FMI - FMI provides superior solutions in the design and manufacture of frequency control devices including Voltage Controlled Temperature Compensated Crystal Oscillators (VCTCXO), voltage controlled crystal oscillator (VCXO), Temperature Compensated Crystal Oscillators (TCXO), crystal clock oscillators, high temperature oscillators, surface mount and crystal oscillator products, phase locked sources and more.

Eton - Shortwave and FM radio receivers. Innovative radios.

Weller - Soldering machines and irons

AntennaCompass Station Bearings - Antennacompass.com will calculate the distance and bearing for Ham, TV, FM, AM, and Shortwave stations and plot it on a compass like display.

FM Repeater Database - Via this interface you have access to one of the biggest databases on amateur radio voice repeaters.

Mid-Latitude Sporadic-E (Es) - This article was originally written in response to a brief review of the basics of sporadic-E

Kenwood TH-25 TH-45 Manual  ^updated - 144 Mhz, 430/440 Mhz FM transceivers manua, zip file.

The IC-756 a Step Forward - The IC-756, a Step Forward for HF and six metre DX by Frank van Dijk, PA3BFM

Amplifier for 15 and 17 meter band - The two linear amplifiers are ment for use with QRP SSB/CW/FM/AM transmitters on the amateur bands 15 and 17 meters can be powered from a 12 volt DC supply by ON6MU

Microwave RF Amplifier Design Tutorial - This tutorial will set out the design stages required to design a theoretical microwave amplifier

Description of CB Controls - A basic glossary of main controls you can find in a CB Radio

Antenna Coupler - Schematics of antenna couplers in french

What's a diplexer? - It's a network that splits a signal to two or more loads, dependent on frequency. It is the simplest form of a multiplexer, which can split a signal into many different signal bands.

5th order High Pass VHF Filter - Sometimes many VHF-UHF modern transceivers have problems with BROADCAST Interference and CROSS-modulation from FM commercial broadcast stations this article shows a simple Batteworth HI-Pass VHF Filter to reduce this problem

A Pocket-Size, Direct-Reading VHF SWR Meter - This easy-to-build LED bargraph SWR meter goes with you anywhere.