Good Morning Andy from across the pond here in a damp UK ( whats new
there then ha ha)
I went and sold the 225 PSU just last week, then this one came in, oh
well i just use the Astron RM50 that is my shack power supply, that
should be man enough for the job.
Did some more voltage checks last night and found that the IF/AF board
are all over the place, so i have that to repair first.
Its a shame the down loaded manuals dont have a component location chart
as well as the circuit diagram, but i will say that the voltage chart is
great.
Thanks for your input and if you have any other suggestions keep them
coming ha ha.
73
Snowy G0HZE
------ Original Message ------
From: "Andrew Moore" <andrew.nv1b@gmail.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Cc: "ROLAND HOWELL" <snowy.howell@btinternet.com>
Sent: Saturday, 14 May, 22 At 22:59
Subject: Re: [TenTec] ARGOSY 2
Hi Snowy -
Are you using the matching model 225 power supply? I had an Argosy II
back
around 1993 - bought it used at HRO in Salem NH - and I vaguely recall
that
when it had some kind of issue I called (didn't "reach out to" ha)
Ten-Tec
and they suggested the problem was with the supply, even though the
radio
still powered on. I (somewhat) remember thinking there's no way the
power
supply could be the problem, but trusted their judgement. They sent what
I
think was some kind of driver transistor(s) for the supply, and it fixed
the problem. Ten-Tec also warned me the parts they sent were no longer
available, outside of whatever leftover stock they sent me.
If you're running the matching supply, are you able to test the rig on
another ~12 VDC power supply?
If you go that route, and you don't have an inline breaker, try to
transmit
into a 50 ohm dummy load, as some of the old Ten-Tecs can be fragile
when
running on something other than their factory matching power supplies.
73
Andrew NV1B
..
On Sat, May 14, 2022 at 3:01 PM ROLAND HOWELL via TenTec <
tentec@contesting.com> wrote:
Hi all, i hope i have not sent this request for advice twice but here
goes (again).
I have the above radio, the fault is no rf out either in the 5 or 50
watt setting.
There appears to be no output on connector 39 on the exciter board, i
have checked all voltages on U1, and all the trannies, all appear to be
within spec, just a few millivolts out.
There is no increase in current rate when changing from RX to TX,
voltages appear to be ok on the finals board.
What is U2 , a quad uhf modulator barrier diode array, that is the only
item that i am unable to test, is there a suitable replacement?.
thanks in advance
73
Snowy G0HZE
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