[Elecraft] Problems on 40M with 100 watt section

[Rich McCabe]

Nope, its around #4400.

So will have to look elsewhere.

Thanks,

Rich
----- Original Message ----- 
From: "Don Wilhelm" <w3fpr at earthlink.net>
To: "Elecraft Reflector" <elecraft at mailman.qth.net>
Sent: Sunday, March 19, 2006 9:02 AM
Subject: RE: [Elecraft] Problems on 40M with 100 watt section


> The problem with the resistors Vic mentioned was a short-lived problem 
> that
> reared its ugly head last Summer until the Elecraft folks discovered that
> the resistor manufacturer had changed the resistor design, so if your 
> KPA100
> was not kitted during that timeframe, you should look for another source 
> of
> the problem.
>
> 73,
> Don W3FPR
>
>> -----Original Message-----
>>
>> Rich McCabe wrote:
>>
>> > Time to search the archives. Any comments would be appreciated.
>>
>> There is a possible problem with some of the resistors that have been
>> supplied for R19/R20 having a larger than usual inductance; and also
>> some capacitors at C80/81 being at the low end of tolerance.  This
>> causes the KPA100 to require much more drive on 20/30/17 meters.  You
>> will see normal current draw at 10 watts, but when you have the
>> amplifier set for 100 watts the driver current will be higher, and it
>> won't be possible to get full power out.
>>
>> Gary Surrency <gary at elecraft.com> has dealt with this problem and can
>> make suggestions.
>>
>> Good luck,
>> --
>> 73,
>> Vic, K2VCO
>> Fresno CA
>> http://www.qsl.net/k2vco
>>
>>
>
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