Re: ISB Receivers
I’m not sure though how much interplay there was between STC and ITT Mackay when it came to the design of HF equipment. IMR was STC's subsidiary involved in the marine radio business. Its post-WWII marine main receiver, the IMR54, was designed by Eddystone, who also built the first run. Yet one imagines that there would have been suitable ITT Mackay models available, as marine receivers were core business for Mackay.
Cheers,
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