[BC] am receiver for monitoring at a 20 KW site...

Mike McCarthy towers at mre.com
Wed Jun 6 22:54:20 CDT 2012


In my case, the radiator is literally just above the receiving loop. TX
tower is on top of the building and base insulators are less than 15ft.
from the RX loop antenna mounted to the building's side. I might get some
nulling by angling the loop's shaft towards the tower to try and null the
magnetic field a bit.  But the E field will be intense no matter what
azimuth we aim it.  We'll use a FIM to adjust for best nulling and test of
course.

We've all but given up on the SAGE RX preferring to import the LP audio as
a couple voice grade channels by the linking T-1 between our sister
station studios a few blocks away. If/when we get the time to fiddle, we
might try to add the LP's as they're just below the deisred station's
frequency. Thus any notch filter we build for the offending station should
be OK for them as well.  They have 100mV signal present and we should be
OK with them.

However, this is low priority.  We need to get the main off-air RX working
first.

MM



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