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| Welcome to my web page I was first interested in radio during the sixties when I used to tune around the forty metre band on a domestic valve radio. In those days on phone it was mainly AM. I obtained my licence in November 1966 and my main interests are homebrew and DXing. My first rig was a VFO controlled TX for top band, it had three valves with a 6V6 PA. The RX at this time was an AR88LF. My first SSB rig was a homebrew transceiver for eighty metres and was mainly valves. It used surplus 455kHz crystals for the filter. The PA used a 5B254M and produced 60W PEP. |  |
28MHz Transceiver  This is my latest project and covers 28-29MHz in two 500kHz segments. The rig runs SSB/CW and produces an output of 20W PEP. I use this rig for transverting to the VHF bands as well as operations on 28MHz. The tuning knob and gearbox are ex HRO. The transceiver uses a 9MHz IF system based on the Plessey SL600 series of intergrated circuits. The Mixer VFO use a pair of switched crystals on 45.3/45.8MHz mixing with a VFO running from 7.8-8.3MHz. The 37-38 MHz output feeds a DBM with TX/RX switching from the 9MHz board. The driver board amplifies the output from the DBM to 1W PEP this then feeds the PA section to 20W PEP. The PA transistor is a RCA 2N5070, which was designed for SSB service in the 2-30MHz range. The PA runs off a 24V supply. |
| Antennas Antenna experiments have been a main focus of my interest and the photo here is of my 28/50Mhz Quad. This has proved to be a good antenna with cheap construction cost. Although quads have a 3D impact they do have a small turning circle. The boom on this example is only 4ft long. The speaders are built with standard 8ft garden canes attached to the wooden boom with shelf brackets. |  |
| This website is under construction. |