Article by Dave N2DS A tuner like this has appeared with some of my high performance radios, such as my #35 and #50 sets. This type of tuner has worked very well with the accompanying detector board to make a nice dx crystal radio. My aim was to put as much versatility into this tuner…
Author: Simone
Born in 1970 currently live in Florence Italy.
Married with 2 childrens work as IT Technician.
WSJT-X Site down: how to download.
The official WSJT-X site is down from several days. The Website is hosted at Princeton Univeristy and it looks like it is under maintenance or relocating. At time writing the only way to download the WSJT-X program is to access the SourceForge website where the files are maintained by the developing team. Click here to…
Six Meter Yagi Antenna
A four element Yagi Antenna for 50 MHz band. The reflector and the director elements can be mounted directly to the metallic boom, while the Driven element must be insulated from the boom. The driven element is basically a simple folded dipole and foreseen a 4:1 balun. Usage of a folded dipole as driven element…
Mic Wiring Diagrams
Article by m0ysu Microphone wiring can be a real pain if you aren’t sure how to work out which wire goes where. On this page I will try to explain the basics and also give you the wiring positions for most CB radio’s Basic Mics – These consist normally of three coloured wires and a…
Compact 20m Yagi
Article by M0DGQ This yagi antenna is particularly suitable for those with small plots ( myself included ) who wish to use a 2 element 20m yagi. The design is by AB4GX, the original article is listed below ( PDF ). Here different materials have been used for construction as these are easy to obtain…
Sudden TVI Problems – Solved
Recently my apartment building decided to change the TV antenna system because of the latest upgrade of TV broadcasting to the DVB-T2 (Digital Video Broadcasting – Second Generation Terrestrial) standard. My 10-year-old samsung LCD TV stopped receiving signals during last summer. Surprisingly, my TV was known to support the new digital broadcast signal, and also…
WSJT-X not decoding – Solved
Solving and issue with WSJT-X not decoding signals
70cm Quadruple Quad
Quadruple Quad by Richard Price BSc. MSc. GW0VMW A suitable high gain 70cms antenna for SOTA operation was sought that did not have the drawbacks of a long Yagi antenna, principally a narrow beamwidth and bandwidth. This is important as operating from a hilltop on a relatively under used band requires as broad a catchment…
1:4 Current Balun
Article by N5ESE Here’s yet another handy little Altoids QRP project. This makes a great travel companion to the 1:1 current balun and is intended to aid in tuning a balanced antenna or feedline that has a high impedance (100-600 ohms). I’ve even used it successfully to tune a 20 meter, 1/2-wave vertical with 4…
1:1 Current Balun
Article by N5ESE Here’s another handy little Altoids QRP project. For Field Day 2002, I wanted to use my new Elecraft K1 (which has an automatic antenna tuner built-in) to feed a full-wave loop on 40 meters, to use on all bands 40 – 15. To preserve the feedline balance (I used 300-ohm ladder line),…