[Elecraft] [K3 / K3S] KIO3B NF

[Hisashi T Fujinaka]

On Sat, 4 Jul 2015, Joe Subich, W4TV wrote:

> Most Signalink units can be improved at least 6 dB by improving the
> noise bypassing (decoupling) on the 5V bus within the unit, adding
> proper filtering to the USB 5V input, and replacing the voltage divider
> used as a reference for the CODEC and audio op-amps with a low noise
> 2.3 V regulator.  Signalink's transmit quality can be improved to a
> significant degree by turning down the CODEC output (Windows "slider")
> to prevent distortion in the CODEC and clipping in the op-amps then
> use an external PTT signal.

Do you have any background info on this? I don't remember getting a
schematic or board layout with my SignaLink and if I did, I don't know
where I'd find it.

-- 
Hisashi T Fujinaka - htodd at twofifty.com
BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee