rotary joint 18ghz

2 Stack Match Yagi Antenna - Solves antenna matching problem with two phased antennas. Stacked rotary beams are popular. However, connecting two 50 Ohm antennas together presents some problems.

Rotary dipole for 12/17 meters - A home brewed rotary dipole antenna for 12 and 17 meters band with pictures and construction details

Rotary Dipole for 30 and 40 meters band - Drawings pictures and notes on a rotary dipole antenna for 30 and 40 meters band

Rotatable 40M Dipole - The Linear-Loaded "Crappie" 40M Rotatable Dipole A Short 40 Antenna You Can Build for $50 or Less by VA7ST VE7ASK

Rotary Washing line antennas - You can only consider yourself as being a real radio amateur if you view every object around you as being a potential antenna. This article describe an antenna for 80 meetrs band

Rotary trapped-dipole for HF - How to build a trapped rotary dipole with many photos ecc.

WB4WOR Propagation Beacons - WB4WOR Propagation Beacon on 6 and 10 meters Jointly Owned and Operated by the Broadcast Packet and Repeater Group and Piedmont Amateur Radio GroupRandleman, NC USA

Chelan-Douglas RACES Group - The Chelan-Douglas Radio Amateur Civil Emergency Services (RACES) Group provides emergency communications services in times of need to requesting agencies throughout North Central Washington State. Chelan-Douglas RACES is hosted jointly by both Chelan and Douglas County Emergency Management. The group is composed of registered Washington State Emergency Workers who hold an Amateur Class Radio License. All members are volunteers who have other primary jobs, and donate their spare time upon request to support emergency operations.

Stack Box By Electra Group - Stack box rotary controllers, antenna switches

RippleTech Electronics - Wide bandwidth Trapped Verticals and rotary dipoles, baluns, 40m/80m wire dipoles and accessories from Australia.

Mobat Communications - HF-SSB radio products Accessories, Amplifiers and Antennas tuners. Established in 1995 as a joint venture between Motorola's Land Mobile Product Sector and Bartal Electronic Enclosures Ltd.

DXBeam - Located in France, DXBeam designs and manufactures a range of monoband, dual band and triband antennas, rotary dipoles, Moxons and Yagis

CAL-AV Labs, Inc. - Cal-av labs, inc. (formerly california avionics laboratories, inc.) manufactures electronic instruments and systems for research and industry. we specialize in radio communications and research/electronic test products. Amateur radio yagi antennas, rotary dipoles, baluns, morse keys.

CWS ByteMark - CWS ByteMark's Baluns (Balanced to Unbalanced) and Ununs (unbalanced to unbalanced) transformers are developed jointly with Dr. Jerry Sevick, W2FMI, who is known worldwide for his work on transmission line transformers

Multi-Tech Industries, Inc. - Manufacturing Precision Products Since 1969. Rotary Switches, Strain Reliefs, Ground Fault Units

ElectroSwitch - Leading rotary switch manufacturer, Electroswitch Electronic Products offers a complete, vertically integrated, manufacturing and assembly facility dedicated to producing rotary switches

Solar Activity and 3-day Predictions - Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force.

NOAA 3 day Report of Solar and Geophysical Activity - Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force.

DigiPan  ^pop - DigiPan provides a panoramic display of the frequency spectrum in the form of an active dial scale extending the full width of the computer screen. DigiPan is the result of a joint effort between myself and Nick Fedoseev, UT2UZ, the author of MIXW32, and is intended to make PSK31 operation easier and more enjoyable for everyone.

New Developments with PLC in Japan - The Japan Amateur Radio League (JARL) is cautiously watching new developments concerning the commercialization of Power Line Communications (PLC), while continuing to carry out joint experiments with a high speed power line communication promoters' alliance to reduce potential interference to radio communications.

The Basic Soldering Guide Photo Gallery - These photos illustrate the basic steps in making a perfect solder joint on a p.c.b

Soldering Guide - A guide to making good soldered joints and desoldering tips by the electronics club

Basic De-soldering Guide - A pictorial guide to the basic ways of desoldering joints.

De-soldering - An overview of some of the ways, and the key tips on how electronics soldered joints can be unsoldered or desoldered.

How to solder - Key facts about how to solder, how to solder wire, how to solder pcb's, and including general soldering techniques and the best ways of making good solder joints for electronic circuits and construction. Includes video