Thread: 3 valve SW TRF receiver.
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Old 6th Aug 2019, 11:28 am   #9
paulsherwin
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Default Re: 3 valve SW TRF receiver.
Similar designs were very common in the hobby mags and beginner's books of the 1950s and early 60s. They often used TV valves like EF91s and EF80s which were widely available from scrap sets.
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