Hi Eric:
Your response is the closest I've gotten to a useful answer thus far.
To be fair, I haven't been flamed for asking, either! :-) The PTT
thread had gotten a bit heated at one point.
I'll keep you posted. Having TenTec modify the Orion to drive
Amp Key off the PTT line in CW is the best solution I can think
of! :-) Maybe they could do it in software...
73,
Mark, KD4D
----- Original Message -----
From: "Eric Scace K3NA" <eric@k3na.org>
To: <tentec@contesting.com>
Sent: Saturday, January 17, 2004 3:41 PM
Subject: RE: [TenTec] How to Switch PTT between SSB and CW for Orion?
> I'm scratching my head over this as well, Mark. Let me know what you
come up with.
>
> My station will be 2 Orions and 2 amplifiers. Eventually I intend to
use the PTT line (and amplifier keyline) signals (OR'ed
> together) as a tool to prevent hot-switching antennas. But I'm not there
yet.
>
> -- Eric K3NA
>
> -----Original Message-----
> From: tentec-bounces@contesting.com
> [mailto:tentec-bounces@contesting.com]On Behalf Of Mark Bailey
> Sent: 2004 January 17 09:40
> To: tentec@contesting.com
> Subject: [TenTec] How to Switch PTT between SSB and CW for Orion?
>
>
> Good morning:
>
> I DO NOT want to re-start a philosophical discussion about PTT on
> Orions. I DO want to figure out how to configure and wire an
> SO2R station using one (or maybe two) Orions. :-)
>
> According to the reflectors and the manual, the Orion supports
> PTT for SSB operation and does not support PTT for CW
> operation. Weird, but so be it.
>
> I need PTT on CW and SSB. If anyone still wonders why,
> please contact me off-list and I'll explain it! :-)
>
> For SSB, I'll hook up the computer (or DVK) PTT line, which is
> basically in parallel with the foot switch, to the Orion's PTT
> (probably on the Microphone jack). This will key the amp
> via the Orion's AMP KEY line and everything should work
> just fine.
>
> For CW, I'll hook up the computer PTT line directly to the
> amplifier, basically in parallel with the Orion's AMP KEY
> line. The Orion transceiver will operate QSK and
> the amplifier will operate using the PTT. This should work
> just fine. My SO2R audio switching means I won't even
> have to listen to the Orion when it is sending a computer
> message, and I don't think I care that the transceiver is
> operating QSK.
>
> I think this will accomplish what I want to do.
>
> However, I now have a station configuration problem. I
> believe from the documentation that I have to physically
> disconnect the PTT line from the Orion when operating
> CW. The PTT input changes functions and becomes
> a CW input line, so I can't leave it connected.
>
> It looks like I'm going to have to use something like an
> SPDT switch to go from SSB to CW. I also don't think
> I want to leave the PTT line attached directly to the
> amplifier in SSB mode, though that may actually be
> harmless. An SPDT switch would allow me to
> disconnect that line also.
>
> Has anyone figured out a way to do this automatically,
> without requiring a manual switch or moving wires
> around, or does anyone has a better way of configuring
> the PTT?
>
> If you still think I don't need or want PTT operation,
> on SSB or CW, please contact me off-list. I DO
> NOT want to re-start the philosophical discussions. :-)
>
> Thanks in advance for your help!
>
> 73,
>
> Mark, KD4D
>
>
>
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>
>
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