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WA6CDE write about a major problem, a design flaw on two Icom 706 caps that have corrosive liquid that can seriously damage this icom transceiver. -
This is a collection of articles, generally from QRP-L, about QRP operations and portable antennas. However, anything that looks interesting to me might end up here. These articles are posted here primarily for my own use; however, all are free to browse. -
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An introduction to DIY building of a concrete base for a 45' mast. -
Here is the parts list and dim. sheet for a 6m Square Copper Dipole, made from copper water pipe -
Traps can be one way round multiband coverage without the need of an atu. Learn how to homebrew your own traps -
The ultimate satellite Omni Antenna by Howard Sodja, W6SHP. The Lindenblad antenna consists of four half wave folded dipoles slanted 30 degrees to the horizon, oriented 90 degrees to each other in azimuth, spaced 0.3 wavelength apart -
Schedules and local radios broadcasting from and to Iraq during war. -
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Antenna that's simple, inexpensive lightwiight and easy to install -
A receiving loop antenna project suitable for 150-430 KHz reception by Gregg van der Sluys -
Yaesu FT-857 offers an availability of changing parameters through the hidden menu. -
The octoloop antenna is a length of 25 pair telephone wire inside an octagonal loop shield of 3/4 hard copper pipe -
The FL-2100Z amplifier referenced in the following images is the 6-Band model covering 10m thru 160m (no WARC bands) and not the 9-Band version that included the WARC bands. Modifications, schematics and manual -
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This page is a short description of the four phased verticals system i've build and used. It is primarily intendend to be used on the lower bands 160m, 80m, 40m. -
A project of VHF regenerative receiver by VK2ZAY -
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G8ODE schema to reduce a half-size G5RV to 70 ft. -
An assortment of Amateur Radio-related technical articles written for the JUG, the newsletter of the Northern California Contest Club. Topics include unique but simple and useful radio modifications and accessories, and rig reviews. -
A project for a portable antenna for amateur radio satellite reception, for 2 meters and 70 centimeters bands -
A vertical antenna for 40 and 80 meters band with no need of antenna tuner, based on a telescopic fiberglass mast of 48 feet by N8NSN -
Remote Control Antenna Switch made with two circuits board -
W4TI review the popular Yaesu FT 857 quadriband transceiver -
A Mini Moxon antenna for 40 meters band project in a well done PDF document -
The diagram below shows the basic arrangement of the 2m Half-Wave version of the antenna. A 6m diagram is available too. -
Measurements that show it doesn't make much difference -
What is ground?RF ground and the ground plane, how can I tell if I have a good ground? ground loops -
A portable VHF home-made Yagi-Uda antenna, that is extremely easy to build and very cheap. Moreover this antenna, while dismounted is just 1 meter long, and the total weight is just 100 grams. -
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D3+ High Performance Antennas for Field Day. This article describes versatile broadband wire antennas. These antennas will double your effective radiated power over a dipole, will be easy and inexpensive to build and install, and will be simple to match. -
A home made QRSS beacon project for the 10 MHz by VK2ZAY -
The Upside-Down Umbrella Antenna by Don Keith N4KC -
Coax is a very important part of a satellite station. It is almost as important as the antennas you choose. This article discusses choosing coaxial cables for satellite communication, emphasizing factors like line loss. It compares types such as RG-8, RG-58, Belden 9913/9913F, LMR-400, and hardline, highlighting their impact on signal preservation. -
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40 meter vertical antenna construction, a shortened easy-to-build vertical, with no-radials, made from surplus military camouflage poles -
A vertical antenna specifically designed to work with the 80 meter CW beacon keyer -
Yet another G5RV antenna plan to build a G5RV Antenna for 80 to 10 meters usage -
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A pdf file with review of RTTY contests software available on the net and information on how to operate a RTTY Contest, by RSGB. -
A vertical antenna project than can present low swr from 40 to 10 meters by using a balun in french -
How to calculate "phasing line" lengths that actually work. -
A universal LF/MF preamplifier by Lyle Koehler, K0LR -
A 2,4 GHz 13cm band quadrible qiad antenna with reflector offering a 14dbd gain -
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A pictorial guide to the basic ways of desoldering joints -
An easy method for erecting antenna masts using readily available material -
A moxon antenna for 11 meter band, suitable for 27 Mhz and 28 Mhz