[Elecraft] K3: 6M SSB audio hash

[Bob Cunnings]

Hmmm. I measure 0.2 to 0.4 ohms from shell of Foster jack to grounding
lug to UHF connector on back, and from various other connector
sleeves/shells to the grounding lug.

However, I have no continuity between line in and line out sleeves and
chassis ground, which appears to be by design, looking at the
schematic. Rear panel mic, speaker and phone commons are tied to
chassis ground on the KI03 main board, but not the (xfmr coupled) line
in and line out commons.

Bob NW8L

On Sun, Jun 8, 2008 at 6:33 PM, Joe Subich, W4TV <lists at microham-usa.com> wrote:
>
>
> Unfortunately, neither the front panel nor the KIO3 have good
> shielding connections to the rest of the radio - at least not
> with my factory assembled K3.  I measure between 5.5 and 6.0 Ohms
> from the shell/ring of the Foster jack to the grounding lug and RF
> (antenna) connectors on the rear panel.  I also measure between
> 5.5 and 6.0 Ohms from the sleeve of the rear panel (3.2 mm) Mic
> jack to the ground terminal and about 24 Ohms from the sleeve of
> the Line in and Line Out jacks to the ground terminal.
>
> 73,
>
>   ... Joe, W4TV