[AMPS] Problem with SB-220 Bias Diodes

[i4jmy@iol.it (i4jmy@iol.it)]

The forward polarized diodes used are probably unsuited for this 
application or with some short term abnormal condition (i.e. lousy 
antenna connector, bad soldering somewere, parasitics, etc.) 
Change diodes with larger devices or better use the original Zener 
connecting it to the ends of the diodes stripe (enough to remove one 
from the chain), finally the zener it's an upgrade.

73,
Mauri I4JMY

> ---------- Initial message -----------
> 
> From    : owner-amps@contesting.com
> To      : "Amps" <amps@contesting.com>
> Cc      : 
> Date    : Wed, 30 Aug 2000 19:16:25 -0700
> Subject : [AMPS] Problem with SB-220 Bias Diodes
> 
>
> 
> Does anybody have any idea why the bias diodes would fail?
> 
> Thanks,
> 
> John (VE7JDB)



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