[Boatanchors] Diode question
David Harmon
k6xyz at sbcglobal.net
Sat Aug 3 23:12:55 EDT 2019
1N4148 works well in the Collins 32S-x and KWM-2 radios.
Should be ok.
73
David Harmon
K6XYZ
Sperry, OK
-----Original Message-----
From: boatanchors-bounces at mailman.qth.net
[mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Jack Antonio
Sent: Saturday, August 3, 2019 4:10 PM
To: boatanchors at mailman.qth.net
Subject: [Boatanchors] Diode question
I'm working on a Drake T-4XB. Symptom is that it will only make output in
X-CW, nothing in Tune or SSB or X-AM.
One problem found, which may or may not be the real problem, is an open
diode in the balanced modulator can. It is a 1N540, of which, of course, I
have no spares.
Question is: Will a 1N914 or 1N4148
(of which I have plenty be an acceptable substitute?
I realize I may have to replace all 4.
Just wondering if there is something special about the 1N540 that is needed
for balanced modulator service.
Thanks
Jack Antonio
WA7DIA
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