Well Jim, that lousy choke has worked wonders on multiple 

occasions and.  Won't argue too much about the ferrites, 

sometimes just a simple snap on worked, sometimes

you need multiple ferrites with multiple loops through each one.

I did forget to mention putting ferrites on speaker leads  

that go to the PC as well as on the power lines for the 

speakers. and monitor(s)

I always try the simple/easy stuff first before expending 

any more efforts.

To each their own. 

73,

Sam W2JDB

-----Original Message-----
From: Jim Brown <k9yc@...>
To: main@WSJTX.groups.io
Sent: Wed, Oct 6, 2021 12:16 am
Subject: Re: [WSJTX] #Cat_RigControl #IssueReport #protocol #stopped_working #Yaesu

On 10/5/2021 6:04 PM, John wrote:

> This is called a counterpoise.

While a counterpoise is an important part of most end-fed antennas, it
is NOT a substitute for proper grounding and bonding. It is something
that can be done IN ADDITION TO proper grounding bonding.

On 10/5/2021 7:09 PM, Sam Birnbaum via groups.io wrote:

> You might also want to connect (if possible) the chassis of the PC, ==
> FT817 and Amp to a single buss bar.

This is part of proper grounding and bonding, and it's the only part of
Sam's advice with which I agree. A coil of coax is a lousy choke, and
clamp-on ferrites for HF must be Fair-Rite #31, with multiple turns
wound through them to do much useful.

73, Jim K9YC