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Re: [TenTec] dit chopper IC-7800

To: n4py@earthlink.net, tentec@contesting.com
Subject: Re: [TenTec] dit chopper IC-7800
From: Duane A Calvin <ac5aa@juno.com>
Reply-to: tentec@contesting.com
Date: Tue, 10 Aug 2004 16:36:18 -0500
List-post: <mailto:tentec@contesting.com>
And this is how I have my Alpha 99 connected.  Also works great on 1.371.

        73,  Duane


On Tue, 10 Aug 2004 21:28:12 -0000 "Carl Moreschi" <n4py@earthlink.net>
writes:
> I run the Acom 1000 with my Orion.  I use the TXOut line of the Orion 
> to the
> Acom key in line.  I then connect the Acom key out to my Orion TXEN. 
>  This
> results in perfectly timed full QSK with the Orion and Acom 1000.  
> This
> works well with Orion firmware 1.371.
> 
> Carl Moreschi N4PY
> Franklinton, North Carolina
> n4py@earthlink.net
> ----- Original Message -----
> From: "Bob Henderson" <bob@cytanet.com.cy>
> To: <tentec@contesting.com>
> Sent: Tuesday, August 10, 2004 8:37 PM
> Subject: Re: [TenTec] dit chopper IC-7800
> 
> 
> > Duane
> >
> > I have been running full QSK for almost 30 years.  I have never 
> used a
> > keying loop with my amps and I don't have hot switching problems.
> > Currently, I have two Orions, one drives an Alpha 87A and the 
> other an
> Acom
> > 1000.  The 87A is pin diode switched but the Acom uses a vacuum 
> relay.
> Both
> > amps are controlled with direct connections from the Amp Key 1 
> outputs of
> > the Orions.
> >
> > With apologies for mentioning the unmentionable..........I have 
> previously
> > used these amps successfully in QSK with TS930, TS870, TS950, 
> TS570,
> > FT100MP, FT1000MP Mk V Field, & Elecraft K2.  The only radio I 
> have which
> > will not work well without modification is my Omni VI+.  The VI+ 
> doesn't
> QSK
> > properly with these amps whether I use a loop circuit or not.  The 
> only
> way
> > I have been able to get either of these amps to work properly in 
> QSK with
> > the VI+ is by retiming the TX Out signal from the VI+.  TX Out 
> from the
> Omni
> > VI+ is enabled in a timely fashion on key down so there is no 
> leading edge
> > problem but it is disabled about 15-20mS too soon and so causes 
> tail end
> > clipping big style.  The loop circuit on the VI+ appears timed
> specifically
> > for Ten Tec amps.
> >
> > Bob, 5B4AGN
> >
> >
> > ----- Original Message -----
> > From: "Duane A Calvin" <ac5aa@juno.com>
> > To: <tentec@contesting.com>
> > Sent: Tuesday, August 10, 2004 7:44 PM
> > Subject: Re: [TenTec] dit chopper IC-7800
> >
> >
> > > Hi Tommy,
> > >         I don't understand your comment - how can it run full 
> QSK
> without
> > > a keying loop for the amp?  Either something is hot switching, 
> has the
> > > potential to, or it's not really running full QSK.  Maybe I 
> don't
> > > understand the comment.  (Or, maybe the rig is QSK but the amp 
> isn't -
> it
> > > stays in transmit?)  My Orion runs full QSK fine with my Alpha 
> 99, but I
> > > don't know at what speed it breaks down.  Certainly does well at 
> 40 WPM,
> > > which is about as fast as I go.
> > >
> > >         73,  Duane
> > >
> > > On Tue, 10 Aug 2004 13:45:09 -0400 "Tommy" 
> <aldermant@alltel.net>
> writes:
> > > > That's OK Rick, I understand.
> > > >
> > > > Unfortunately, I think Ten Tec has taken your exact track on 
> the
> > > > amplifier/QSK issue. The Orion, with the latest versions of
> > > > firmware, v1.371
> > > > and v1.370, will not work with the Ten Tec Titan 3. Maybe 
> someday?
> > > > But as
> > > > you say, high speed CW ops are an extremely small minority of 
> active
> > > > hams
> > > > and marketing types don't think there are enough sales (and
> > > > rightfully so)
> > > > to worry about that issue or operating the rig in the CW mode 
> much
> > > > over
> > > > about 50 wpm. However, since you do not need a keying loop to 
> run
> > > > full QSK
> > > > with Icom gear, that IC-7800 running at 80 wpm last night sure 
> did
> > > > sound
> > > > excellent.
> > > >
> > > > Tom - W4BQF
> > > >>
> > >
> > >
> > > Duane Calvin, AC5AA
> > > Austin, Texas
> > > _______________________________________________
> > > TenTec mailing list
> > > TenTec@contesting.com
> > > http://lists.contesting.com/mailman/listinfo/tentec
> > >
> >
> >
> > _______________________________________________
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> > TenTec@contesting.com
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> 
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> 


Duane Calvin, AC5AA
Austin, Texas
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