Plug in coils, 3 valve TRF Home Made circa 1924.  Battery Set, with headphones.  Working, happily drives the BTH Horn speaker shown  elsewhere.

Behind closed doors! I acquired this set from an antique shop. The owner was going to break it up for the mahogany. Inside was a 3 valve set with 1 Cossor 'Point 1 Det & LF', and 2 BBC stamped Mullard D3LF valves,one pip topped. The original box for pip topped one was in the set, and can be seen bottom left on top of the battery eliminator. The radio did not work and cannot have worked as it was. I would imagine someone had tried to make a 3 valve set out of an 'old' 2 valve kit, and the conversion had gone wrong! A chart on the inside of the door gave dial settings for 1933, so I suppose it must have been in use till then at least. Components inside date this set to around 1924, The top shelf contains the extra plug in coils and headphones.

The Insides! Here is the radio on test with Cossor 210DET and some PM2's. I did not want to fire up the BBC's until all was working correctly. I used all the parts as a 'new kit' as the wiring was such a mess it was impossible to work out what was what. Gerry Wells helpfully drew out the basic Straight 3 TRF circuit for me and it is this arrangement which is installed. The original cloth covered wire was used where possible, the perished rubber wire was replaced. many of the components were useless and new innards have been fitted to old shells. There is a second shelf which cannot be seen in the photo which holds the transformer and other components.

Original Valves! Here is the radio with its original valves. I have tried them and they do work. The BBC ones light up rather brightly! I am not sure if this us OK so I generally use the set with my 'test valves' Reception is not bad at all considering and it is very pleasing to listen to it when some appropriate period music is played.

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