It sounds like he needs a keyer that can adjust all the keying delays to get
around this. The K1EL winkey keyer has parameters to adjust delays both
ahead of and after keying. There is even a special PTT line on this keyer
just for the purpose of bring up the amplifier relay ahead of the radio
transmitting. See www.k1el.com for more information about this keyer. I
run an Acom 1000 and use the keying loop setup but I do not key faster than
35 wpm.
The Amp key line on the Orion only has adjustments for how long the amp
relay is held after keying has ceased. I think there is a fixed 20 msec
that this line comes up before the Orion is keyed.
It is also possible that the relay in the Acom is slower than it should be.
Carl Moreschi N4PY
Franklinton, NC
----- Original Message -----
From: "NJ0IP" <Rick@dj0ip.de>
To: "Tentec@Contesting. Com" <tentec@contesting.com>
Sent: Wednesday, November 10, 2004 4:24 PM
Subject: [TenTec] QSK/QRQ problem with Orion / ACOM 2000A
> One of our local hams is having problems mating his Orion 564 to
> his ACOM 2000A (automatic linear).
> The problem is only when trying to run full QSK at speeds above
> 40 wpm.
> In SSB or when running slower speeds, everything works just fine.
>
> First he tried to use the QSK keying loop, but found at high
> speeds, the characters were being shortened to the extent that
> the code was not readable.
>
> The next step was to key the amp in the normal fashion, as if it
> were not a QSK amp.
> He adjusted the keying delay to give the amp time to switch its
> TR relay.
>
> The problem when running this way is, the 2000A gives an error
> message: "ARC Fault", which I believe indicates a bad SWR between
> the TX and the AMP. Sounds to me like the amp's relay isn't
> switching fast enough.
>
> This problem only occurs when a dit is keyed.
> If he keys a dah, there is not problem.
>
> Has anyone used the ACOM 2000A with the Orion successfully under
> these conditions, or, does anyone have any suggestions of how he
> might successfully use the two together for high-speed CW?
>
> Tnx es 73
> Rick
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|