[Elecraft] TVI and More

[Jim Brown]

On 9/22/2021 6:40 PM, Phil Kane wrote:
> I second what Jim Brown posted earlier.  It's a problem of front-end 
> overload and/or audio rectification within the affected devices, not of 
> the transmitter.

Yes, it's audio rectification, but I'll go to the mat about "front end 
overload" NOT being a primary cause of RFI (and I went to the mat with 
ARRL ten years ago and lost). Rather it's "the Pin One Problem," first 
noticed in the world of pro audio by a ham, the late Neil Muncy, 
ex-W3WJE. That's the failure to terminate cable shields to the shielding 
enclosure at the point of entry. EVERY rig I examined the last time I 
was at Dayton had Pin One Problems at their accessory connections. 
Nearly all computers, computer accessories, and consumer equipment has 
this manufacturing defect.

This is why proper bonding in our stations and ferrite chokes on wiring 
connected to victim equipment solve RFI problems.

73, Jim K9YC