Hi Donnie,
Yep that was the problem --all is well now.
Thanks for your email and suggestion.
73's
Pete N6QW
--------------------------------------------------
From: "Donnie Garrett" <cfzepp@gmail.com>
Sent: Sunday, February 10, 2013 10:26 AM
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] ALC circuit on the Corsair I
Pete:
Did you first check for damaged diodes D1 & D2 on the SWR board? That may
be your ALC problem.
Donnie / WA9TGT
Sent from my iPhone
On Feb 9, 2013, at 1:25 PM, Mike Bryce <prosolar@sssnet.com> wrote:
Pete,
did you follow the adjustment procedure in the manual?
the ALC is set by both the front panel control and ALC trimmer on the
LLdriver.
Mike
On Feb 8, 2013, at 8:44 PM, N6QW wrote:
Looking for someone who knows and understands the innards and outards
of the TT Corsair I ALC circuit.
On the Corsair I, I am refurbishing, The ALC controls do not seem to
function. At first I thought it might be a circuit problem with the ALC
circuit devices and replaced all of them. Same issue. The ALC barely
lights when you adjust R11 and R15 has no effect at reducing the power.
I temporarily put an LED on the ALC board connector as can get that to
dim.brighten with an adjustment of the panel mounted ALC control but not
as it should as that is for very low power levels as controlled by the
Drive control --and the panel LED is really dim.
At low power levels the temporary LED will come on when you key the MIC
but dims on voice peaks which is the reverse of what it should do. I
measured the voltages on all of the devices Q4-Q9 and the values are
close to what the TT manual says they should be -- so nothing there.
Any one have any suggestions or clues on how to fix the ALC. Rather than
clog up the reflector please reply directly to radioguy90@hotmail.com
73's
Pete N6QW
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