The Orion "Amp Key" line will go to ground about 20 milliseconds before the
Orion actually transmits a signal. It will then stay ground for up to a one
second delay after transmit finishes. This delay is adjustable from 0 to 1
second. It seems to me that this line provides all the timing that is
necessary to key external equipment and protect it from a transmit signal.
Am I missing something?
There is also a variable QSK delay you can independently adjust for how
long it takes the receiver to come back on after transmit is finished. This
delay is also adjustable from 0 to 1 second.
Carl Moreschi N4PY
Franklinton, NC
----- Original Message -----
From: <K3BU@aol.com>
To: <tentec@contesting.com>
Sent: Saturday, December 27, 2003 11:40 PM
Subject: Re: [TenTec] TT Orion: Also SEMI-BK-IN possible ?
In a message dated 12/27/03 6:18:13 PM Eastern Standard Time,
dh0ghu@dh0ghu.de writes:
Of course I agree with Jack that on HF, QSK is an abolute must for
reliable operation. It has nothing to do with PTT: Be sure, I'll not use
a PTT for CW contesting, I only have two hands, one for the PC, one for
the keyer, that's all...)<<
If I understand, you seem to consider PTT to be Phoot To Talk. PTT line
is
used by computer to switch system from receive to transmit and vice versa.
With
bunch of equipment like amplifiers and switching systems for radios and
antennas, precise control of PTT signal timing allows to fine tune the
system,
eliminate hot switching, millions of unnecessary cyclings and unnecessary
delays
as experienced with semi-BK. We do not use PTT for foot switch type
control by
real feet.
Yuri, K3BU
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