OK, I knew one band was a problem. I will avoid 12M just to be safe.
I worked so hard on my baby I don't want to chance screwing her up, hihi.
thanks,
Bob
K6UJ
On Mar 28, 2012, at 9:29 AM, Carl wrote:
> 12M is the problem band and removing 3-4 turns may move the resonance as it
> does with Dentrons. Since I dont use my 76PA on WARC (The LK-500ZC does well
> there) I havent tried it.
>
> Carl
> KM1H
>
>
> ----- Original Message ----- From: "Bob K6UJ" <k6uj@pacbell.net>
> To: <amps@contesting.com>
> Sent: Wednesday, March 28, 2012 11:43 AM
> Subject: Re: [Amps] gettering question
>
>
>> Carl,
>>
>> Thanks Carl, I will be going thru it and plan to replace all the filter
>> caps, resistors, and the electrolytic. I got this amp in a trade
>> and although it has been converted to two 3CPX800's, he didnt do anything
>> else to it. Im pretty sure it still has the original filter caps
>> so it definetely needs these replaced.
>>
>> I have another 76CA, my daily use amp, which I have converted over two two
>> 3CPX800's, changed the filter caps plus the things you
>> recommended and it is running great.
>>
>> BTW, what WARC bands are safe to use with the Alpha 76's ? If I
>> remember, there is one band I should avoid.
>>
>> 73,
>> Bob
>> K6UJ
>>
>>
>>
>>
>> On Mar 28, 2012, at 7:12 AM, Carl wrote:
>>
>>> Id be more concerned about the PS if the filters havent been replaced.
>>> There are also a few resistors and a small electrolytic that change
>>> value/go leaky.
>>>
>>> An hour should be sufficient as that tube appears to age well if it isnt a
>>> well abused pull.
>>>
>>> Carl
>>> KM1H
>>>
>>>
>>> ----- Original Message ----- From: "Bob K6UJ" <k6uj@pacbell.net>
>>> To: <amps@contesting.com>
>>> Sent: Tuesday, March 27, 2012 11:48 PM
>>> Subject: [Amps] gettering question
>>>
>>>
>>>> With an amplifier that uses a pair of 3CPX800's, like my converted Alpha
>>>> 76CA, how long should I
>>>> let it sit there heating the filaments before using, when it hasn't been
>>>> used for 2 or 3 years ? Couple of hours, 1 day, ?
>>>>
>>>> Bob
>>>> K6UJ
>>>>
>>>>
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>>>>
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>>
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