Re: [IC-7000] IC700 and PRO7 IC headset RFI on my rig
Charles & Sandra Cohen
These "long-wire tuners" are very flexible beasts.
There's not much info in the AH-4 user manual, but SGC has a whole line of them, and there is _extensive_ information on the SGC website:
One of the things that SGC recommends them for, is delta-loop antennas.
I had an SG-230 on my boat, feeding an insulated backstay against two long wires forming a "ground plane". It worked very well. But -- with the boat's interior in the "near field" of the antenna -- I used _lots_ of ferrites!
So, having a delta loop right over the rig might lead to trouble, no matter what tuner is used. The problem may not be _conducted_ RFI, brought in through feedline, but _radiated_ RFI from the antenna.
. CHarles VA7CPC