Thanks for all who responded to my request for info. I have resolved the
problem it was the INJ cable and I am good to go.
73,
Don Jones
Arlington, WA
----------------------------------------------------------------------
Message: 1
Date: Sun, 14 Nov 2010 17:15:43 -0800
From: "Don Jones" <k...@comcast.net>
To: <drakelist@zerobeat.net>
Subject: [Drakelist] C-line will not go into transceive mode...
Strange
Message-ID: <002d01cb8462$a0ccf840$e266e8...@net>
Content-Type: text/plain; charset="us-ascii"
OK, I have something strange going on. The transceive vfo select on my T-4XC
will not switch to one vfo or the other. Running separate is fine. The spot
function works good too. The vfo lights on the R-4C and T-4XC switch on &
off following the vfo select switch position on the T-4XC.
A little history, yesterday evening the R-4C was not hearing anything but
the calibrator was loud and clear. So today I broke out the Deoxite and
cleaned the contacts of the TR relay inside the T-4XC - receive problem
solved.
I put the T-4XC back together and now I have this new issue with transceive
vfo select. I am hoping I did something stupid and easy to fix.
73, Don Jones KO7i
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Message: 2
Date: Sun, 14 Nov 2010 17:38:28 -0800 (PST)
From: Robert Ladden <rmlad...@yahoo.com>
To: drakelist@zerobeat.net
Subject: Re: [Drakelist] C-line will not go into transceive mode...
Strange
Message-ID: <303165.42452...@web43131.mail.sp1.yahoo.com>
Content-Type: text/plain; charset="utf-8"
Let's start with the obvious. ?Is the INJ cable connected well at both
ends?Did you put Deox-it on more than the T/R relay?
73,Bob WW3QB
--- On Sun, 11/14/10, Don Jones <k...@comcast.net> wrote:
From: Don Jones <k...@comcast.net>
Subject: [Drakelist] C-line will not go into transceive mode... Strange
To: drakelist@zerobeat.net
Date: Sunday, November 14, 2010, 8:15 PM
C-line will not go into transceive mode... Strange
OK, I have something strange going on. The transceive vfo select on my T-4XC
will not switch to one vfo or the other. Running separate is fine. The spot
function works good too. The vfo lights on the R-4C and T-4XC switch on &
off following the vfo select switch position on the T-4XC.
A little history, yesterday evening the R-4C was not hearing anything but
the calibrator was loud and clear. So today I broke out the Deoxite and
cleaned the contacts of the TR relay inside the T-4XC ? receive problem
solved.
I put the T-4XC back together and now I have this new issue with transceive
vfo select. I am hoping I did something stupid and easy to fix.
73, Don Jones? KO7i
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Message: 3
Date: Sun, 14 Nov 2010 17:42:36 -0800 (PST)
From: Bob Loving <bob.lov...@sbcglobal.net>
To: drakelist@zerobeat.net
Subject: [Drakelist] Sudden loss of T-4XC ouptut power
Message-ID: <744880.82433...@web81103.mail.mud.yahoo.com>
Content-Type: text/plain; charset="us-ascii"
I've mentioned this before, rather recently, but check CR19 in the cathode
circuit of the driver, V4 (12BY7). I have 2 T-4XC transmitters that
exhibited sudden drop (to nothing in both cases) in power output. Both had
CR19 with cracks in the cases. The diodes would appear OK with a DMM (diode
mode) but with the application of heat would open up. Maybe there's some
intermediate mode that would allow moderate output power but that doesn't
seem to make too much sense. Most semiconductors work or they don't work, in
my experience!
A 1N4003 and up is good substitute for the B5G5 diode used by Drake.
Bob K9JU
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