Invicta Model 30

 This rather sorry-looking receiver from 1946 has seen better days, although it wouldn't take too much effort to tidy up the case and find a pair of matching knobs for the two switches. The switch positions are unusually marked but clear enough for users.

 Behind the rear cover everything looks OK. The valves are interesting because the leftmost pair were made by Ever-Ready, the ECH35 freqency changer and the IF amp, an EF39. The large valve is a Mullard EBL31 and the rectifier held in place by the woven cap is a Mullard AZ31.


 The set is equipped with the trawler band which was interesting back in the 1940s and 50s but then rapidly lost all its transmissions.





 Above right are the coils which as you can see are not screened thus saving some aluminium. Above is the serial number fastened to the rear of the chassis, and opposite the same number on a card stapled to the case. Maybe the maker was concerned about ensuring customers returning their sets for servicing got back their original cabinet and chassis pair.

Many years ago I bought a brand new Saab 96 and put it in for its first free service at 1000 miles. When I got it back I noticed a smell of petrol, but didn't bother doing anything about it. It must have been ten years later when I'd had starting problems I discovered the top and bottom of the carburettor didn't mate up properly. I checked the codes on the two parts and found the top was from a Ford Thames van. The car I had before the Saab was a new Land Rover. At its first service the carburettor had been replaced with an old one, but I discovered that only when I sold the car 2 years later. Very odd.


Above is the label glued to the inside of the rear cover, oddly showing completely different component numbering to the Trader Sheet. Note the name "Fish" given to the Trawler Band.

 Here's the second Invicta Model 30 circuit diagram. Click the picture to see the Trader Sheet.


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