[1000mp] MP RFI Sensitivity

[Joe Giacobello, K2XX]

Steve, I've observed similar behavior (CPU reset) with my original MP 
when running high power into an end fed wire.  Even counterpoises and 
MFJ's Artificial Ground were only partially helpful.  My old TS-850 also 
was susceptible to RF getting into the audio section.

73, Joe

Steve L. wrote:

>I have a MP Mark V and under certain conditions it
>will get a rough monitor tone (CW) but the output
>signal is clean.
>
>When the monitor gets REALLY rough, the output signal
>is also distorted/modulated/nasty.
>
>This happens when I use an off-center-fed antenna, fed
>with 'balanced' feedline and RF is getting into the
>shack via radiation. No grounding would ever affect
>it.
>
>This is the only radio I've ever had that was RFI
>sensitive. When QRO on 10m, I've had it reset the
>rig's CPU suddenly. The thing has a ferrite clamp on
>every I/O: key, RS232, headphone, linear relay, etc.
>
>I've since been forced to change my antennas due to
>this problem. I use wire arrays with tall trees for
>support.
>
>73, Steve N4SL Machias, WA
>
>
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