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Homebrew a compact yagi antenna for 14 Mhz suitable for those with small plots based on a design by AB4GX -
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This document contains the detailed instructions to build a homemade lindenblad antenna using a twin-lead as dipole elements. This document contains 9 pages and includes a detailed construction sequence and some drawings to build this antenna for UHF and VHF ham radio bands -
A sourge arrestor for PL 259 connectors. A voltage surge arrestor to limit the voltage that may come back down the wire or coax after there has been static build up -
A home made yagi antenna featuring 6db forward gain and 22 Db front back -
A 21 MHz Four Square Beam Antenna This popular antenna for the lower bands, can also work well on 15 meters, QST Article -
Adding extra directivity to the Moxon Rectangle for 6m, 4, and 2m -
Improper grounding or earthing system can cause several unwanted RF interferences (RFI) to television sets, broadcast receivers, hi-fi sets and telephone sets. In this Article the author explain how to setup a proper radio shack grounding using coaxial cable and ceramic disc capacitor -
A moxon rectangle for 50 Mhz band -
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An end fed 20 meter half wave antenna -
VHF UHF diplexer by G8MNY -
Service manual in PDF Format for the Yaesu FT-7800 transceiver -
A solutiom for the Ameritron AL-811(H) RF power amplifier, burnt panel meter lights. A common failure with the Ameritron AL-811 and similar amplifiers is that the panel meter lights burn out prematurely. These bulbs are usually integrated into the actual panel meter. The solution for this is to provide the meter backlighting with LEDs. -
Part 2 You're now much closer to saying goodbye to your unwanted signal problems! -
A compact antenna for 160 meters, suitable for hams tha want operate top band buh have a limited space -
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A Useful Horizontally Polarised Omni-directional Antenna with Gain for 144 MHz -
A PDF presentation about Amateur Radio and Linux by By: Dave Mamanakis. A beginners guide to Linux for radio amateurs, this presentation cover basic concepts of the open source operative system, from the basic installation to the setup of ham radio programs. -
An home made vertical dipole antenna made with simple material. The antenna has a total length of aproximately 16 feet. In this article appeared on June QST 2019, the author explain how he reached the optimal confirugation changing and adjusting the lower part of the antenna, trimming and spacing correctly the copper wire. PDF File to downloas -
G3XBM's Amateur Radio Page - with QRP, VLF and crystal set links -
This interface is intended to be used with all the popular digital modes like PSK31, RTTY, Olivia, etc., which modulate a continuous carrier. -
A scanned PDF of this interesting book on HF Dipole antennas published by Stanford Research Institute -
Web based VHF-UHF RF planning powered by SPLAT! and Google Maps. Access via website, Android App or dynamic Google Earth interface. -
Schematic of Yaesu FT-857 main board original jumpers based on different radio type -
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Optimizing performances of the end-fed antennas QRP quarterly article -
In this article K3DAV show a very simple way to make an RF choke coil that will remove your RF feedback troubles -
Packet Radio networking home page with lots of informations and tech. resources -
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An excellently presented article on the design and construction of a medium wave DX Antenna -
Optimization tests of the W3EDP multi-band HF wire antenna a popular aerial among QRP enthusiasts because it is light weight and cheap. -
A complete guide to magnetic loop antenna construction, with analysis of multi-turn and single-turn magneti loops, and and insight on choosing the optimal capacitor, or homebrewing your own butterfly capacitor -
There are 2 possible TX extensions on the E version, either full TX (1.705 - 30 MHz) or just open up 5 MHz (cut the R968 jumper and make it into a K version). This mod has been tested on TS 590S and not on TS 590SG -
A Variable Base-Loading-Coil for use under a HF Mobile Whip -
An optimized variant of the venerable G5RV multiband antenna -
A multi-band portable vertical antenna can be built with relatively ordinary components obtained from the local hardware store, including replaceable loading coils -
Live dx spots using a world map and google map interface by 5B5WN -
Experiments with spiral dipole antennas. Includes two spiral antenna designs for 20 and 40 meters band by KN9B -
Using a full-size antenna and a reasonably sensitive headphone, this simple switching mixer will produce an amazing abundance of signals on 80m. -
Intended for portable long-term usage and also good for Field Day Events article by By Steve KB1DIG & Kim KB1GTR -
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Yaesu FT-2000 Panadapter, using the Softrock 9 Lite, SDR receiver kit -
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The skeleton slot antenna design was developed in the UK for TV use soon after WW2. This document describe and adapted version for the 2 meter band -
This article is designed to be an introduction to the terms and basic mechanics of propagation methods that are to be found on the HF and VHF bands. -
This is an experimental CW transceiver for 80m, although the same idea will work on all HF bands