On Sep 1, 2012, at 9:02 PM, Don Wilhelm wrote:
> As for your wattmeter problems, I suspect that the diodes D16 and D17 may be
> "half bad". Yes, that is rare, but possible - they have been damaged enough
> to change their characteristics but not make them either open or shorted.
>
> I would
Bill,
Yes, you can substitute 1N4148 diodes - they are not as flat with
respect to frequency and the response at very low powers will not be as
accurate, but other than that, they will work just fine.
73,
Don W3FPR
On 9/3/2012 12:51 PM, Bill Coleman wrote:
> I have some 1N5711's on order from
On Sep 1, 2012, at 9:02 PM, Don Wilhelm wrote:
> Bill,
>
> I am puzzled why a bad EL5146C would cause an INFO 080 problem. INFO 080
> normally is the inability of the MCU to properly communicate with another
> firmware processor. While it is entirely possible that the EL5146C was
> dragging
Bill,
I am puzzled why a bad EL5146C would cause an INFO 080 problem. INFO 080
normally is the inability of the MCU to properly communicate with
another firmware processor. While it is entirely possible that the
EL5146C was dragging down the output of the +5v regulator and causing
the KPA100
My KPA100 has been giving good service for nine and a half years. Back in July,
it was giving me an INFO 080 issue, which I tracked down to a defective U6 -
EL5146C on the KPA100. I've successfully replaced this chip, and now the KPA100
is responding.
Because of the part replacements, I have go
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