I have been battling with what I thought was RFI for
quite a while now. I won't go into all the details.
My setup is an Orion, Ameritron AL1500 & Heil Proset w/
the HC4 element.
I stupidly set the mic gain by ear, rather than by the
red led. With most radios, that's ok. Not with my Orion.
For whatever reason, the Orion will sound fine at high
audio gain levels, then suddenly sound like RF is getting
into the audio. I have been able to repeat this with
two HC4 mics, but not with a couple of cheap ($10-20)
computer mics.
I have lowered the mic gain dramatically, and things
seem much more stable. Time will tell.
Bottom line, if the audio sounds crappy, try turning down
the mic gain first, even if it used to sound fine.
73,
Tom - N1MM
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