[TenTec] How to Switch PTT between SSB and CW for Orion?

[Carl Moreschi]

The EXT T/R percent is percent of 1 second.

The QSK delay is how long it takes the receiver to come back on after
transmit.

Carl Moreschi N4PY
Franklinton, NC
----- Original Message -----
From: "Mark Bailey" <kd4d at comcast.net>
To: <eric at k3na.org>; <tentec at contesting.com>
Sent: Sunday, January 18, 2004 2:23 AM
Subject: Re: [TenTec] How to Switch PTT between SSB and CW for Orion?


> Hi again, Eric:
>
> I'm borrowing Frank's station for the CQ 160 CW contest,
> and there's going to be an Orion there!  :-)  I'm also helping
> John Evans, N3HBX, with his station configuration and
> planning for a possible new station.  He has an Orion, but
> he hasn't put it into the station yet.  I did NAQP CW there
> using two FT1000MP's.
>
> It's John's setup that is causing the question.  Next
> weekend, I'm just going to drive Frank's amp in parallel
> with the Orion's Amp Key line, using a relay to switch
> his -40VDC amp keying line.
>
> By the way, do you have any idea what the units of percent
> for EXT T/R Delay actually are?  Percent of a second?!
> At least I think I understand what that does.
>
> Also, do you know what CW QSK Delay does?  The units
> are also percent.  My best guess is what a "Japanese radio"
> would call VOX delay, but the manual isn't clear.  I guess
> the two settings are so we can do QSK with a separate
> receive antenna even with a non-QSK amplifier?!  Even
> the reason for having both settings isn't clear.
>
> 73,
>
> Mark, KD4D
>
> ----- Original Message -----
> From: "Eric Scace K3NA" <eric at k3na.org>
> To: <tentec at 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 at contesting.com
> > [mailto:tentec-bounces at contesting.com]On Behalf Of Mark Bailey
> > Sent: 2004 January 17 09:40
> > To: tentec at 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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