Topband: Common Mode RF Currents Disrupting JT Transmissions

[Wes Stewart]

What is the rf grounding system for the antenna?  If it's adequate then there 
shouldn't be any rf on the outside of the coax.  If it isn't then you're 
bringing part of the antenna into the shack.  Ferrites are a band-aid in this case.

Wes  N7WS


On 2/17/2017 12:40 PM, Paul Kiesel via Topband wrote:
> Hello -
>
> I'm not able to run more than 150 watts when using JT65 on 160. RF gets into the computer and disrupts the JT signal. I don't have this problem on 6m where I run QRO using JT65 on EME. I installed ferrite beads on all radio and computer leads, with multiple beads on coax cables. My antenna is an inverted-L hanging from a big douglas fir, and it's about 150 feet from the shack. The feed coax is RG-218 (same as RG-17), so there was no opportunity to coil it into a choke at both ends. Should I be more aggressive with the ferrites?
>
> Respond directly, please. Thanks.
>
> 73, Paul K7CW
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