[Boatanchors] How did they "pinpoint" frequencies way back when?

[WA5CAB@cs.com]

I don't recall what the Brits used but any US intercept station would have 
had one or more BC-221's for setting receivers accurately on frequency (if they 
felt the need).  I have several (60+ actually but I don't use all of them).  
The pair of BC-221-AK's made in 1943 or late 1942 that I routinely use here at 
the house are good for +/- 500 Hz if I'm being sloppy and lazy.  They're both 
older than I am (barely) and probably work better.  :-)

But the receivers that were commonly used for this sort of work would mostly 
not have been the tactical sets like the BC-312 or BC-342.  They would have 
used less common sets like the Super Pro series, HRO, BC-903 (NC-100A), etc. (or 
whatever the Brit equivalent was), which have better resetability.

In a message dated 4/10/2004 11:06:25 PM Central Daylight Time, 
gzook@yahoo.com writes: 
> How did "intercept ops" accurately set their receivers
> for expected incoming messages?
> 

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
<wa5cab@cs.com> (Primary email)
<wa5cab@houston.rr.com> (Backup email)


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