W5ALT Indoor Vertical Antenna
A small home made indor vertical antenna for HF bands
Category Archives: Homebrew
Building Lindenblad Antenna for 137MHz.
The CobbWeb Antenna
G3TPW CobWebb Antenna for the 14, 18, 21, 24 and 28 MHz Bands Author and source: http://www.g3tpw.co.uk/ The main advantages of the CobWebb over other 5 band 14 to 28 MHz antennas are that it is small, lightweight, strong (made from fibre glass), only requires a single support, needs no rotator, gives full size dipole
Home build a Kenwood PG-5G cable.
Parts List P1 9 pin D socket with shroud.P2 8 pin mini DIN plug.Some 4 or 5 core shielded cable. Making Up Following the pictorial guide (right), solder wires between the relevant pins on each plug, not forgetting to slide the Mini DIN plug casing onto the cable before you start. The diagram is colour
Home build a Kenwood PG-5A cable
This lead is the audio data cable for some of the Kenwood Mobile transceivers. It is also available as part of the PG-5H kit where it is supplied along with a PG-5G lead. Parts List P1 & P2 3.5mm stereo jack plugs.P2 6 pin mini DIN plug.Some “figure 8” shielded cable or similar 2 core
The $4.00 Ham Radio Satellite Antenna
Simple, inexpensive ham radio satellite antenna project
The Hentenna
Hentenna project for the six meter band
4m Slim Jim Antenna
This 4m Slim Jim is cheap and easy to build yet it greatly out performs the more usual dipole due to its low angle of radiation. An SWR of 1:1 is obtainable across the 4m FM band with simple adjustment. The photograph and PDF diagram show the construction, however a brief description is also given.
Rewinding Power Transformers: Considerations and Step-by-Step Guide
Transformers are vital in radio projects, often salvaged for reuse. Understanding their power handling, testing methods, and rewinding techniques can enhance your projects while reducing costs significantly. Happy winding!
J-vertical Antenna for 10 meters band
Article by EI9GQ My first J vertical was a Slim Jim for two metres. This simple aerial performed better than a centre fed dipole at the same height. I compared it with an end fed half wave and an end fed 5/8 wave vertical. The Slim Jim always gave better results. SLIM JIM When I