[1000mp] 1000MP Field - RTTY wiring

Mon, 26 Aug 2002 01:49:36 -0000

Fred:

Yes, the AF OUT is the way, but with some precautions.

* The AF OUTputs are 200 mV RMS, fixed-level; The AF GAIN controls do not
control them. A way of selecting either or mixing both outputs is required.
A simple way is to feed them to stereo sound card inputs and use the
appropriate Balance control in the Windows Play Control window. However,
this is awkward in a pileup. A superior hardware alternative is a small box
with a separate balance pot, at the operating position. The AF OUT drivers
are emitter followers, so their  output impedance is low.

* You can run the mixed/selected output to the separate mono miniplug
labelled RXIN AUDIO on the PK232; cut the RX audio line from the 4-pin DIN
plug, or the main channel audio will always be present.

Garry, NI6T

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of 50Mhz
> Sent: Tuesday, June 25, 2002 18:25
> To: [email protected]
> Subject: [1000mp] 1000MP Field - RTTY wiring
>
>
> I have wired the PK232MBX to the 1000MP thru the RTTY jack at the rear
> panel. I have verified that only the main receiver audio is routed to the
> PK232 via RTTY connector pin 2. This avoids the use of the
> sub-receiver and
> therefore makes not possible to monitor the transmitting side of the RTTY
> pile-ups with the sub-receiver.
>
> I can overcome this problem by using the AF-OUT output where both receiver
> audio are present. Is this the way ?
>
> I would appreciate feedback on this and information how you have worked
> around cases like this.
>
> Thanks de PY2XB, Fred
>
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