Re: R1481 set
Geoff,
I would certainly say its impractical to modify a R1481 to the SW bands. Equally it would be impractical to modify it for the FM broadcast bands, given that its an AM receiver. It does sound like it may have been bought by mistake! I can't think of much use for an AM receiver on those frequencies back in 1950. Its just possible he though of picking up TV sound of course.
As for the price difference, it must reflect the difference in popularity of the R1132 vs R1481. And that almost certainly comes down to published magazine articles on how to use and modify these sets.
Richard
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