[BC] Frequency Measuring

[Tom Dimeo]

During my very limited experience in broadcasting back in the 
sixties, the station I worked for in central Pennsylvania 
used a person in Massachusetts to measure the frequency.

I always wondered how he could hear the station well enough 
to make the measurement?

The station was on 920 kHz with five hundred watts 
directional at night and one thousand watts nondirectional 
during the day.  When the station went off the air at 
midnight he would call and we would put the transmitter back 
on with the one thousand watt nondirectional signal with a 
one thousand cycle tone and he'd give the frequency measurement.

How in the world did he do this?

Tom