[Boatanchors] Diode question

[Glenn Little WB4UIV]

1N540 is a 400 PIV 1/2A rectifier diode.
Usually used as a power supply rectifier.
Are you sure of the number??

73
Glenn
WB4UIV


On 8/3/2019 5:10 PM, Jack Antonio wrote:
> 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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-- 
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Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            wb4uiv at arrl.net    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI LM   NRA LM   SBE ARRL TAPR
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