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Restoration73 · 7th May 2021, 6:05 pm

I don't know if this is defining, but according to "Radio Engineer's Pocket Book" 12th Ed
1958 (Newnes, editor F J Camm) "the maximum length of aerial, inclusive of lead-in, permitted by the Postmaster General is 150 feet"
Perhaps initially a length was specified to limit any radiation on the carrier frequency for
a TRF/Reaction receiver, or local osciliator radiation for a superhet.

7th May 2021, 6:05 pm	#23
Restoration73 Nonode Join Date: Jun 2013 Location: Surbiton, SW London, UK. Posts: 2,801	Re: Household aerial length limitation I don't know if this is defining, but according to "Radio Engineer's Pocket Book" 12th Ed 1958 (Newnes, editor F J Camm) "the maximum length of aerial, inclusive of lead-in, permitted by the Postmaster General is 150 feet" Perhaps initially a length was specified to limit any radiation on the carrier frequency for a TRF/Reaction receiver, or local osciliator radiation for a superhet.