[TowerTalk] RFI Identification

[Tony]

All,

I have an RFI problem that I'm trying to identify. It's a continuous 
pulse noise that pops on every 1/2 second. The actual timing between 
each pulse is about 0.533 seconds and doesn't seem to change.

It's spread accross all HF bands and on some days, it creeps up into the 
100MHz range. It's stronger on the lower bands (80 meters) than on the 
upper HF frequencies.

The signal is directional and can be nulled completely when not beaming 
in the direction of the source. The interference came on suddenly in 
December.

I have a few recordings and would appreciate any suggestions. Apologies 
for the off-topic subject -- please reply direct.

Tony -K2MO