The ICOM R-71A is excellent but pricey. However I've found success with
automobile radios. You can buy or build a 12 volt 1.5 amp power supply
inexpensively.

"Graeme" wrote in message
...
Am looking for a reasonable cost BCB superhet tuner or receiver (valve or
solid state) which has a known sensitivity of 0.1 microvolts or less for
10
dB s+n/n ratio. May be a manufactured or kitset radio. All advice and
references appreciated. TIA.
Graeme