I believe he said that he had tried another AC-4.? If not, that is
certainly the first suspect! Perhaps I have confused one of the other
(five) problems I've got working... :-)
Lou, if I did confuse this, definitely try either another supply or at
least bridge a suitable cap on the LV supply. If you are able to set
the idle current correctly the BIAS supply is probably ok. If this IS
the problem, get and install the AC-4R 'upgrade' kit from the Heathkit
Shop. Solves, (and avoids,) many unpleasant problems!
Happy New Year!
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
David wrote:
Had the same thing. It was the filter cap in the AC4 serving the Lower
voltage supply.
David Assaf, III
W5XU
*From:* [email protected]
[mailto:[email protected]] *On Behalf Of *LOU GIOVANETTI
*Sent:* Thursday, December 30, 2010 12:51 PM
*To:* [email protected]
*Subject:* [Drakelist] T-4XB problem
I was on the air on CW with my T-4XB when all of a sudden The
transmitted signal started to sound rough? Any idea what the problem
could be?
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