Any one valve may be used, including more than one electron stream as long as they are in the one envelope.
A separate semi-conductor detector diode (but not a second valve) may be used.
The receiver must be submitted for judging with its own power source and headphones or speaker.
It may be powered by battery or mains. If powered by mains power, the mains wiring should be such that it is
inaccessable while the set is operating and the chassis must be earthed to the mains plug earth pin.
If the receiver is considered unsafe by the judges it will be disqualified.
The power supply may contain valves.
The receiver may tune more than one band, but it will be judged on its performance on the
broadcast band (550Khz to 1600Khz).
A circuit diagram and explanation of the controls must be supplied.
All receivers will be judged as follows:
On air performance - 40 points
Construction technique - 30 points
Appearance - 30 points
The "On Air Performance" will take into account the type of circuit and award points accordingly,
ie: a TRF will be judged on its performance as such and not judged against a Regen or Superhet receiver
(there is a challenge for the judges).
The Judges
The judges - Matthew Weatherley, Gil Long, and Peter Hadgraft - had a hard job to decide the winners
The Winners
Kevin Apps 1st, Keith Hoffman 2nd, Matthew Weatherley 3rdBrian Reid's radio was voted the Most Popular Radio by the members
The Entries
Radio 1 - Kevin AppsRadio 2 - Kevin Apps [First Prize]Radio 2 - Kevin Apps - rear viewRadio 3 - Frank SinkoRadio 3 - Frank Sinko - rear viewRadio 4 - Frank SinkoRadio 4 - Frank Sinko - rear viewRadio 5 - Matthew WeatherleyRadio 6 - Matthew Weatherley [Third Prize]Radio 7 - Matthew WeatherleyRadio 7 - Matthew Weatherley - inside viewRadio 8 - Matthew WeatherleyRadio 8 - Matthew Weatherley - inside viewRadio 9 - Rex NewsomeRadio 9 - Rex Newsome - rear viewRadio 10 - Rob WebbRadio 10 - Rob Webb - rear viewRadio 11 - Rob WebbRadio 11 - Rob Webb - rear viewRadio 12 - Ken RiddingsRadio 12 - Ken Riddings - rear viewRadio 13 - Roland ClarkRadio 13 - Roland Clark - rear viewRadio 14 - Norm BullRadio 15 - Warwick StrainRadio 16 - Ray Creighton
Little Jim 2 (Battery Version) using a 1 valve design from Australian Radio and Hobbies January 1947Radio 17 - Leister CoulthardRadio 17 - Leister Coulthard - inside viewRadio 18 - No entryRadio 19 - Fred ClarkRadio 20 - Brian Reid [Most Popular Prize]Radio 20 - Brian Reid - inside viewRadio 21 - Keith Hoffmann [Second Prize]
