[Elecraft] K3 audio line in/out cables

[Bill Frantz]

Bob is right about cables, but things like USB hubs also need to 
be considered. When I transmitted at more than 100W on certain 
bands, my 7 port USB hub would lock up and need to be power 
cycled. It has a plastic case, so I got a metal box to house it, 
and a ferrite clamp on choke for each USB cable coming into it. 
I stuffed all of them into the box, bonded the case to the shack 
bonding system, and haven't had a problem since.

(The hub supports my external keyboard, mouse, backup drive the 
K3, and a cable for syncing/charging my cell phone.)

On 4/5/18 at 7:41 AM, rmcgraw at blomand.net (Bob McGraw K4TAX) wrote:

>Yes both channels supported.    Regarding USB cables, the 
>standard A Male to B Male is the configuration.  Be sure to 
>look for and get good quality cables which do have a 
>shield.   This will mitigate many RFI issues associated with 
>the cable picking up RF and allowing it to get into the 
>computer.    Of course a couple of turns through a ferrite 
>donut on the cable will also help.
>
>73
>
>Bob, K4TAX

-----------------------------------------------------------------------
Bill Frantz        | Ham radio contesting is a    | Periwinkle
(408)356-8506      | contact sport.               | 16345 
Englewood Ave
www.pwpconsult.com |  - Ken Widelitz K6LA / VY2TT | Los Gatos, 
CA 95032