guide wire

Petlowany Antennas by K6NO - WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length

The G4ZU Spider Beam or Skypper - This 3 elements wire Yagi comes along in a great variety of names. On the 11 meter is calle Skypper due to the manufacturer Alex 1SD019 On Ham bands is called Spider beam or G4ZU.

The Battle Creek 40 80 160 m antenna - 3 Band vertical Marconi-antenna for the bands 40, 80, 160 meters with a ground net of wires as radials.

VE7CA portable tribander yagi - 30/17/12 and 20/15/10-Meter Tribanders and a 40 meters inverted V wire yagi antenna

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

Open-wire Feedline - Homebrew Light-weight Open-wire feedline for Portable Ops by N5ESE

Two-Wire Transmission Line - 2 wire transmission line explained

N6RK Open wire line - 1000 feet of open wire line

[TowerTalk] Open Wire Line - Discussion about open wire line on tower talk

Homebrewing: A Lost Art - A Packeteers guide to homebrewing

QRP Antenna 80-40-20-15 End Fed Antenna - A long wire antenna that will load up on 80, 40, 20 & 15 meters without an antenna tuner and without balun coils

CoaxMan - The Coaxman by Clear Signal Products, Inc. features a complete Wireman line of coaxial cable and antenna wire. Antenna wire, baluns, coax connectors, insulators, ladder line, magnet wire, rope.

Farallon Electronics - PACTOR mode radio modems and accessories, performance sailing electronics and innovative hard to find parts. Audio cables, packet cables, usb to serial converters

Anritsu - Provides technology and solutions for the electronic test and measurement, optical, rf and microwave, wireless, wired, telecommunications. Make Frequency Counters, Antenna and spectrum analyzers, power meters, signal generators

A Guide to Test Equipment - That just about sums up many peoples’ attitude towards test equipment. Multimeter, SWR/Power Meter, Dip Oscillator, RF Signal Generator, Cathode Ray Oscilloscope

About Digital Smart Technologies - A general guide to D-STAR. The purpose of D-STAR is to allow HAM Radio operators to speak further and clearer using digital voice while sending data from 1200 BPS on up at the same time.

Australian National D-Star Web Site - This web site provides information and Operational Guidelines for D-Star in Australia.

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

G4IRX/P portable operations - A compact and portable setup with wire dipoles by G4IRX

Long Range Wi-Fi - Long range Wi-Fi antennas you can build. Helicals, parabolics, and biquads discussed. How to add external antennas to WUSB54GC and F5D7050 usb wireless adapters for long range connections.

Xperto Antenna Software AN-SOF - XPERTO is a software for the modeling of antennas and 3D arbitrarily shaped wire structures. Xperto computes the electromagnetic response of wire antennas, including radiation and scattering problems.

Nuhertz Technologies - Leading supplier of low and high frequency electronic filter design products for the design of wireless telecommunications equipment, semiconductors and more

Online Microwave Filter Design and Analysis - This site is dedicated to design and analysis of micro- and millimeter wave filters from 0.5 to above 100 GHz.

Designing Op Amp Audio PreAmplifiers - Design guidelines for Op Amp audio preamplifier circuits by Mike Martell N1HFX

Homebrew RF Test Equipment - Several projects which will allow you to build your own RF design test equipment.