[BC] Overcrowding & noise floor on AM

[DHultsman5@aol.com]

In a message dated 3/20/2007 9:59:11 AM Central Daylight Time,  
kzerocx at rapidcity.net writes:

I  remember signing on, after midnight, once a month, in the 60s and  having
Commercial Radio Monitoring Company verify/correct our frequency  monitor
readings.  We got some QSLs from that, too.  That all  went away with
inexpensive, accurate frequency counters.

Gary,  K?CX



And the elimination of the requirements we all had to check the  calibrations 
of our frequency monitors. Before economical counters the only way  was 
external zero-beat monitoring services.  As most of remember many of  our 
transmitters crystals were more stable than our frequency monitors  readings.
 
Is there anyone that still offeres frequency measurement service off the  air 
other than the FCC at Powder Springs, GA. ?
 
Dave



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