Grant:
70 WPM is way more than I'll ever need!! At any rate, I only set QSK to
drop out between letters, not individual dits and dahs.
The radio is definitely telling the amp to transmit and stay in transmit. I
check the voltages on the TX OUT line just now in both version, and here are
my findings:
v. 2.030:
Orion II in RCV, amp in Standby = 3.29 V
Orion II in XMT, amp in Standby = .018 V
Orion II in RCV, amp Ready: = 23.16 V
Orion II in XMT, amp Ready (xmitting) = .034 V
v. 2.031:
Orion II in RCV, amp in Standby = 3.29 V
Orion II in XMT, amp in Standby = .018 V
Orion II in RCV, amp Ready: = .034 V (after a few initial transmissions.
Amp stays 'triggered')
Orion II in XMT, amp Ready (xmitting) = .034 V
Going back to v. 2.020 cures problem.
I see where the problem may lie: The 23.16 Volts on the line when it is in
Ready...that's higher than TT recommends, and could have something to do
with the problem. Actually, as I read the schematic of the Titan, it should
be around 28 V. What may be needed is transistor in between to key the
23.16 V and isolate it from the Orion II.
I'll send this to TT and see what the response is.
Ron
N6AHA
----- Original Message -----
From: "Grant Youngman" <nq5t@comcast.net>
To: "'Ron Castro'" <ronc@sonic.net>
Sent: Saturday, March 04, 2006 8:38 AM
Subject: RE: [TenTec] QSK Bug in O2 2.031
In both my case and Gene's we are using TT amplifiers that
implement QSK "the right way" according to TT. I wonder if
there is any difference with TT and other amps?
The PIN diode switch in the AL-1200 manages the loop handshake correctly.
The connections for my amp match the diagram in the Titan manual, as shown
for connection to a Ten-tec transceiver.
If you do a search on the archives of the tentec@contesting list, you will
find some extremely heated discussion about Orion and Titan (don't
remember
if it was a 425 or III) QSK issues which had to do with one of the list
members (W4BQF) normally running cw at 70+ wpm. At that speed there was
a
problem with the interface to the Titan. He had a real issue, but he was
the only one with this very high speed interface problem and QSK was
running
normally for most of the rest of us "slow readers". I don't recall T-T
ever
fixing the problem, and haven't seen Tommy around the list for a while.
But this was a different issue than you are seeing. Do you know if the
Orion II is glitching and holding TX OUT low and continuing to key the amp
after switching back to receive, or if the amp is just deciding on its own
to remain keyed after TX OUT goes high?
Gant/NQ5T
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