long range

Magnetic longwire balun - Magnetic longwire baluns 1:9 combined with ground, a 1:2 and 1:1 balun connections by ON6MU

QRP Magnetic longwire balun with VHF-splitter - This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.

Les baluns - About different baluns types. Samples and schematics for several ratios baluns in french

Open Wire Feed Line a second look - Put up the longest dipole you can fit, feed it with open wire line, connect it to the balanced output of your tuner and—poof! Instant multiband antenna. Is life really that simple? By Paul Danzer, N1II

Log Periodic of Another Sort - A log periodic dipole array (LPDA) antenna design that offer continuous low SWR in 13-30MHz range

W5JGV Mobile Antenna - A High Efficiency Extended Length Mobile Antenna The antenna itself is 3.42 meters or 11 feet 2 inches long from the top of the mounting spring to the tip. By W5JGV

Antenna Gain to ERP - A radio's transmitting power can be concentrated along the horizon by use of a GAIN antenna. Although you may still be transmitting with four watts of power, your effective radiated powerwill be greatly increased. This table shows the effects of antenna gain on a transmitter with 4 watts of transmit power.

Icom AH-4 wide range antenna tuner - This document attempts to compensate for a rather sparse instruction manual by providing information on how to interface the AH-4 with any HF radio.

Sidemount VHF/UHF Antenna - This antenna is designed to be mounted off the side of a tower. Works on 136-153 Mhz range but also on 70 cm band

F8JZR Morse keys collection - Telegraphy collection, telegraph, sounder, relay by F8JZR in french

F5ZWE Beacon station - Operating in 28.243 Mhz as F5ZWE/B

Patriot Hills Antarctica - K2ARB - Adam Brown's Blog from Latitude 80.19 South Longitude 81.16 West

GM3HAM Lothians Radio Society - Amateur Radio Club in Edinburgh. Founded in 1949 with twice monthly meetings and a range of activites including talks, DF hunts, vists and contesting.

Moapa Valley Amateur Radio Club - A club of approximately 20 Members. Interests range from Emergency Preparedness to seeing how many countries we can contact from local radio stations.

MicroHAMS - Microhams is a dynamic organization of hams in the Puget Sound area. The club includes a broad range of people from our local tech industry who participate in just about every aspect of our hobby.

W7DG Lower Columbia Amateur Radio Association - Longview, Washington

YouTube - What the HELL? - Hellschreiber is an interesting ham radio mode developed back in the 20s. It is a bit strange and different, but fun. I'll explain what it is, then I make a couple contacts during the Hellschreiber contest.

Signal Forge - The signal forge 1000 signal generator is a portable, high-performance digital and rf signal source with a 1 ghz frequency range. features include digital, differential and ac coupled outputs

Latchways - fall protection systems - Latchways are the world leaders in fall protection and the manufacturers of the mansafe range of products for working at height.

Convert addresses to Latitude and Longitude - This online tool will convert any street address into latitude and longitude and vice-versa by executing queries to several online mapping services like googlemap geocoder maporama terraserver and more by Stephen P. Morse

DStarForum.com - Discussion board for all Keen on Dstar radio. Skeds arranged, bugs and software fixes discussed too

Scientific Surplus - Buy, sell and trade electronic and scientific instruments. Oscilloscopes, microscopes, signal generators, RF equipment, short & long wave radios, meters and wattmeters, detectors (radiation, metal), spectrum & network analysers military equipment

FA Palm - Grid Square - Grid Square for Palm OS calculates the Maidenhead Grid Square for a given latitude and longitude.

Test Tone Generator  ^updated - This Test Tone Generator (TTG) turns your PC into a function generator and enables you to demonstrate, test and tune sound systems, create sound effects and a whole range of other uses to suit your needs. It can also be used for educational purposes.

Interdigital bandpass filter designer - Fill out the form to design a bandpass filter as described in the January 1985 issue of Ham Radio Magazine. These filters are generally limited to frequencies above 200 MHZ because their size is slightly longer than 1/4 wavelength