[Elecraft] K2 audio output for digital modes

Sun Dec 7 11:42:06 2003

Hi Wim and all K2rs,

I have just developed a couple of PCB, one motherboard, the K2DI-III (the same circuit as the K2DI v II.2, but
smaller) and one daugtherboard, the K2DI-PCI, to interface the former PCB direct to the computer's soundcard and
serial port, featuring either
RS232 or TONE PTT (user's choice) and isolation from the computer by means of an optocoupler and a couple of two
600:600 transformers. Ideal for backpackers.

Currently, and unlike the K2DI v.II.2, these boards can be installed in the K2 (not the non split K2/100) and they
may coexist with the KAF2 or the KDSP2 as well as with the internal battery.  Ideal for backpackers.

Have tested the prototype boards and they work fine. Hope that I'll be able to make the finished (and as usual,
silk-screened and double sided with plated through holes) PCBs available to K2rs by Christmas.

In the meanwhile, please allow me up to 24 hours to upload some info (schematics diagrams, drawings and pictures)
to my website www.qsl.net/ea3blq/ . I believe I have some good news for the non split K2/100 users too.

As soon as I upload this info I'll post its availability in this list.

Thanks for bearing with me and all the best.

73 for now.

Pauli, EA3BLQ
K2/100  #1044

URL: http://www.qsl.net/ea3blq/
[email protected]
[email protected]

----- Original Message -----
From: "Wim Dewilder" <[email protected]>
To: <[email protected]>
Sent: Sunday, December 07, 2003 6:18 AM
Subject: [Elecraft] K2 audio output for digital modes

: Hi,
:
: I'm looking for a way to get a fixed audio output to the microphone
: connector
: to connect my PSK and RTTY soundcard interface (it has isolation
: transformers).
:
: I would like to get some audio to the connector even if the AF gain is
: tuned way down, and I still
: like to have the headphone connector working.
:
: I found 2 possibilities on the reflector and just want to run it by
: people who tried it.
:
: option 1)   get audio from  VOL 2 terminal of R3 on the Front Panel  board
:
: option 2)  use a tap-off point on the KAF2 board  (which I don't have
: but might consider
:                  if it has such a point)
:
: option3) ?????
:
: thanks for the feedback
: - K6TE  Wim  (K2 #3553)
:
:
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