[600MRG] 630m background noise

[Dave Riley]

The current loop antenna here for 630m is 5 turns of #14 wire, resonated 
and not shielded in a 5' dia.

It out performs previous antennas here so far.

With a 50 ohm load connected to the receiver input I set the audio out ( 
no agc ) to 0 db

Replacing the load with the loop antenna I get + 7 db of noise with no 
signals

Is this about average for 475 khz?? Does anyone know what to expect at 
these frequencies??

Dave/W1FRV






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