[TenTec] TenTec Digest, Vol 188, Issue 3

Fri Aug 3 13:27:14 EDT 2018

Thanks for all of the quick replies. I think that the mod sounds like the
best way to go. So I guess until I get it done it will sit on the shelf.

THANKS!!
73 Paul K9OT

On Fri, Aug 3, 2018 at 11:00 AM, <tentec-request at contesting.com> wrote:

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> Today's Topics:
>
>    1. Centurion hook up (Paul DeWitte)
>    2. Re: Centurion hook up (Bob McGraw K4TAX)
>    3. Re: Centurion hook up (Patrick)
>    4. Re: Centurion hook up (Bob McGraw K4TAX)
>    5. Re: Centurion hook up (Rick at dj0ip.de)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 2 Aug 2018 20:04:36 -0500
> From: Paul DeWitte <k9ot at yousq.net>
> To: tentec at contesting.com
> Subject: [TenTec] Centurion hook up
> Message-ID:
>         <CAK=nnoFnU+YkuPZM42mUonqvcqXJb8HaxTf0vU1c
> +tg5fx+XeA at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> I have a centurion amp, and have always used it with a radio with the
> tx out and ex en.
>
> I have accumulated a couple of Corsair IIs that were made before they
> put tx out and tx en on them. I also have a Corsair II with the tx out and
> tx en.
>
> To avoid hot switching the amp, can someone steer me the correct way to
> hook up the older corsair to the amp?
>
> I believe that the centurion book shows how, but I want to make sure before
> I wreck something.
>
> I also think that it is possible to make a mod on the corsair II to
> make it tx en and tx out. I have not looked into that yet.
>
> Thanks, 73
> Paul K9OT
>
>
> ------------------------------
>
> Message: 2
> Date: Thu, 2 Aug 2018 20:32:46 -0500
> From: Bob McGraw K4TAX <rmcgraw at blomand.net>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] Centurion hook up
> Message-ID: <D36E0C96-4ABC-43AE-B702-28C32C3E12D9 at blomand.net>
> Content-Type: text/plain;       charset=us-ascii
>
> The Centurion has "hot switching " sensing.  Take the Key line from the
> Corsair II  to the PTT on the amp.  Should be OK.  If the Corsair does not
> have adequate delay then the amp won't switch.
>
> The other way is to provide a means to key the amp at the TX EN (foot
> switch) and use TX OUT to switch the radio into transmit.
>
> Bob, K4TAX
>
>
> Sent from my iPhone
>
> > On Aug 2, 2018, at 8:04 PM, Paul DeWitte <k9ot at yousq.net> wrote:
> >
> > I have a centurion amp, and have always used it with a radio with the
> > tx out and ex en.
> >
> > I have accumulated a couple of Corsair IIs that were made before they
> > put tx out and tx en on them. I also have a Corsair II with the tx out
> and
> > tx en.
> >
> > To avoid hot switching the amp, can someone steer me the correct way to
> > hook up the older corsair to the amp?
> >
> > I believe that the centurion book shows how, but I want to make sure
> before
> > I wreck something.
> >
> > I also think that it is possible to make a mod on the corsair II to
> > make it tx en and tx out. I have not looked into that yet.
> >
> > Thanks, 73
> > Paul K9OT
> > _______________________________________________
> > TenTec mailing list
> > TenTec at contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Thu, 2 Aug 2018 22:11:51 -0400
> From: Patrick <flymooney at gmail.com>
> To: tentec at contesting.com
> Subject: Re: [TenTec] Centurion hook up
> Message-ID: <3f57e8f3-d09d-315d-5ae2-61e1514921dc at gmail.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Hi Paul,
>
> You can modify your Corsair II to have a TX OUT and TX EN keying loop.
> Here are the instructions: http://corsair.wikidot.com/corsair-txen
>
> I have done this to two of my Corsair II radios (my third has it already
> installed from the factory) and it works very well.
>
> I know the instructions seem a little simple but there really isn't much
> to it. If you have any questions, I'll be glad to answer them.
>
> Patrick
> K4PNR
>
>
>
>
> On 8/2/2018 9:04 PM, Paul DeWitte wrote:
> > I have a centurion amp, and have always used it with a radio with the
> > tx out and ex en.
> >
> > I have accumulated a couple of Corsair IIs that were made before they
> > put tx out and tx en on them. I also have a Corsair II with the tx out
> and
> > tx en.
> >
> > To avoid hot switching the amp, can someone steer me the correct way to
> > hook up the older corsair to the amp?
> >
> > I believe that the centurion book shows how, but I want to make sure
> before
> > I wreck something.
> >
> > I also think that it is possible to make a mod on the corsair II to
> > make it tx en and tx out. I have not looked into that yet.
> >
> > Thanks, 73
> > Paul K9OT
> > _______________________________________________
> > TenTec mailing list
> > TenTec at contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
>
>
> ------------------------------
>
> Message: 4
> Date: Thu, 2 Aug 2018 21:33:02 -0500
> From: Bob McGraw K4TAX <rmcgraw at blomand.net>
> To: tentec at contesting.com
> Subject: Re: [TenTec] Centurion hook up
> Message-ID: <ebe53eca-7e56-32de-1954-b05d5244c603 at blomand.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Thanks Patrick.?? I was not aware this was available.
>
> 73
>
> Bob, K4TAX
>
>
> On 8/2/2018 9:11 PM, Patrick wrote:
> > Hi Paul,
> >
> > You can modify your Corsair II to have a TX OUT and TX EN keying loop.
> > Here are the instructions: http://corsair.wikidot.com/corsair-txen
> >
> > I have done this to two of my Corsair II radios (my third has it
> > already installed from the factory) and it works very well.
> >
> > I know the instructions seem a little simple but there really isn't
> > much to it. If you have any questions, I'll be glad to answer them.
> >
> > Patrick
> > K4PNR
> >
> >
> >
> >
> > On 8/2/2018 9:04 PM, Paul DeWitte wrote:
> >> I have a centurion amp, and have always used it with a radio with the
> >> tx out and ex en.
> >>
> >> I have accumulated a couple of Corsair IIs that were made before they
> >> put tx out and tx en on them. I also have a Corsair II with the tx
> >> out and
> >> tx en.
> >>
> >> To avoid hot switching the amp, can someone steer me the correct way to
> >> hook up the older corsair to the amp?
> >>
> >> I believe that the centurion book shows how, but I want to make sure
> >> before
> >> I wreck something.
> >>
> >> I also think that it is possible to make a mod on the corsair II to
> >> make it tx en and tx out. I have not looked into that yet.
> >>
> >> Thanks, 73
> >> Paul K9OT
> >> _______________________________________________
> >> TenTec mailing list
> >> TenTec at contesting.com
> >> http://lists.contesting.com/mailman/listinfo/tentec
> >>
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec at contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Fri, 3 Aug 2018 07:50:27 +0200
> From: <Rick at dj0ip.de>
> To: "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
> Subject: Re: [TenTec] Centurion hook up
> Message-ID: <000a01d42aed$e1c3fa80$a54bef80$@dj0ip.de>
> Content-Type: text/plain;       charset="us-ascii"
>
> GM Paul,
>
> The safest way is to use the TX OUT/EN mod that Gary describes and Patrick
> pointed out.
> This is not some kind of hack; it is exactly how it is done on later model
> transceiver that have this feature.
>
> If you don't want to modify your radio and still want to interface
> seamlessly with your Centurion, you can use an special "external" keyer.
>
> There are a few keyers which offer adjustable time-sequence keying for the
> transceiver and the amp.
> They add the necessary delay to prevent hot switching, yet still be used as
> QSK.
>
> HOW THEY WORK:  When you hit the first dit (or dah), these keyers
> immediately swith the AMP KEY line of the linear amplifier, and after a
> defined (adjustable) delay, pass the dit on to the transceiver.
> This enables the linear to have finished switching before RF is applied.
> In
> addition they also have post-dit delay (hang) which assures the amp's T/R
> relay does not switch back to RECEIVE before the last dit or dah has
> completed.  I use an MFJ Millennium Keyer Model 495.  It has programable
> delay for both of these signals.
>
> If you want to read in detail about amp interfacing and CW, I have a few
> pages on this topic on my web site:
> http://www.dj0ip.de/ricki-leaks/amp-interfacing/
>
> You can also purchase a QSK-2500 and it will do all of this automatically.
> https://qsk2500.myfreesites.net/
>
> MY RECOMMENDATION:  Do the Mod.  It is very simple to do.
>
> Gud Luk
>
> 73,
> Rick, DJ0IP
> (Nr. Frankfurt, Germany)
>
> -----Original Message-----
> From: TenTec <tentec-bounces at contesting.com> On Behalf Of Paul DeWitte
> Sent: 03 August 2018 03:05
> To: tentec at contesting.com
> Subject: [TenTec] Centurion hook up
>
> I have a centurion amp, and have always used it with a radio with the tx
> out
> and ex en.
>
> I have accumulated a couple of Corsair IIs that were made before they put
> tx
> out and tx en on them. I also have a Corsair II with the tx out and tx en.
>
> To avoid hot switching the amp, can someone steer me the correct way to
> hook
> up the older corsair to the amp?
>
> I believe that the centurion book shows how, but I want to make sure before
> I wreck something.
>
> I also think that it is possible to make a mod on the corsair II to make it
> tx en and tx out. I have not looked into that yet.
>
> Thanks, 73
> Paul K9OT
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>
>
> ------------------------------
>
> Subject: Digest Footer
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> ------------------------------
>
> End of TenTec Digest, Vol 188, Issue 3
> **************************************
>