In article , elaich wrote:
Does anybody know of a small, easy to obtain receiver that can receive 85
kcs? Tube type, surplus OK.

Take an AA5. Keep the 455 KC IF strip, but change the tuning on the front
end and the local oscillator.

Otherwise you are probably in frequency-selectable voltmeter territory.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."