About G0JJG

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About G0JJG

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Antennas

Amateur radio has been my hobby since discovering the shortwaves as a listener in 1973, aged 10.

In Febrauary 1978 the class B (vhf and up) call G8OYW was obtained, and for some years 2m ssb dx was my  main activity.

 

Since 1987 I have held G0JJG, largely concentrating on 80m dx. The areas of grey line propogation and antennas are a source of endless fascination.

 

 A young family, and busy working life fill the remainder of each day!

Setup at G0JJG is an FT1000MP with 80m inverted M phased array in a small garden(60 foot square including the house).

 

 

 

 

The receive antennas are a pair of K9AY loops, allowing four directions of fire. These are fantastic at revealing stations masked by local noise. I have also played  with EWE and Pennant loops to good effect, but the extra directions are worthwhile. The background noise is S8 at best on the inverted vee, often worse! Most contacts  are around greyline. Often the rarer ones need a lot of listening in order to catch them before the pileups swamp everything.  UPDATE - March 2003 - I will do this  properly soon! The inverted Vee has been replaced by the Inverted M. This is a pair of short verticals, quarter wave spaced, with additional slanting wires up to the mast  in the center. This is phased using a crude coax arrangement, and is switchable NE/SW. There are now around 2km of wire buried in the garden (the xyl is planning  to have me commited to an asylum), and this ground system is also in use with a lazy L on Topband. The 160 antenna can also be voltage fed on 80m, but the feed  system has a tendency to spontaneous combustion so is not really in serious use on 80. Verticals are definately the way forward, and perhaps a 4 element sloping array  may be the next experiment. The K9AY loops have had to go to make space as the garden in only 60 feet square. Lots of winter audio files to update soon, when I get round to converting them. 73 de Joe, G0JJG

 

 For further information on amateur radio in the UK visit the Radio Society of Great Britain Web Site.