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Old 19th Nov 2022, 1:44 am   #9
Synchrodyne
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Join Date: Jan 2009
Location: Papamoa Beach, Bay of Plenty, New Zealand
Posts: 2,943
Default Re: Jason AM/ FM Tuner details

From the related thread in the “Radio” section, https://www.vintage-radio.net/forum/....php?t=195763:

Quote:
Originally Posted by Synchrodyne View Post

In general, the Jason/Jasonkit tuner range was quite complex. Jason and Jasonkit products with the same designation did not necessarily have the same circuits – although sometimes they did - and often they had different cases. And sometimes when the circuitry was the same, the Jason and Jasonkit versions had different names. For example, the similarly named Jason FMT3 and Jasonkit FMT3 had different valve lines up, but the differently named Jason Monitor and the Jasonkit Mercury II (as distinct from the original Mercury) shared the same circuit.
The attached is the outcome of a quick effort to map out on a spreadsheet the chronology of the Jason/Jasonkit tuner range from start to finish. It should be viewed as being approximate and probably incomplete at best.

Jason Tuner Chronology.pdf

Jason also had a French branch, the inception of which was noted in WW 1958 August, p.368. It might have lasted longer. Its FM tuner range included an FMT7 model, whereas Jason UK did not go past the FMT4 designation.


Cheers,
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