[Amps] Transformer reliability? 34yr old Collins...

[Mark Beckwith]

Man am I glad this thread came up.  I just moved a big transformer I bought 
used in 1976.  It's been sitting all this time waiting for my 4-1000 
project.  I'll bake it when the XYL is out.  What further testing/break-in 
would /should I need to do to it?

Mark, N5OT


----- Original Message ----- 
From: "Scott McGrath" <mcgrath at fas.harvard.edu>
To: "Jim Tonne" <tonne at comcast.net>
Cc: <Amps at contesting.com>; "Vic K2VCO" <vic at rakefet.com>; "TMorton" 
<cx7tt at 4email.net>
Sent: Friday, October 03, 2008 8:33 AM
Subject: Re: [Amps] Transformer reliability? 34yr old Collins...


> You can bake it in a 175-200 degree oven for 6-12 hours and that will
> dry it out.   Do this while XYL is out.    Barring that get a pound or
> two of silica gel from a craft store and place it and xfrmr in a sealed
> container for a couple of weeks in a warm place (top of furnace) comes
> to mind
>
> The bakeout is still the best bet though.
>
> - Scott N1JIN
>
> Jim Tonne wrote:
>> Vic:
>>
>> What is the transformer part or model number?
>> Does the owner know what apparatus it came
>> out of?
>>
>> - Jim WB6BLD
>>
>>
>>
>> ----- Original Message ----- 
>> From: "Vic K2VCO" <vic at rakefet.com>
>> To: "TMorton" <cx7tt at 4email.net>
>> Cc: <Amps at contesting.com>
>> Sent: Thursday, October 02, 2008 3:56 PM
>> Subject: Re: [Amps] Transformer reliability? 34yr old Collins...
>>
>>
>>
>>> TMorton wrote:
>>>
>>>> A local ham has a power transformer and I am considering using it to
>>>> power a 8877. I sent the serial numbers to the manufacturer, Johnson
>>>> Electric Coil Co and they answered that the xfmr was made in 1976 for
>>>> Collins Radio. My question is how reliable would this be after 32years?
>>>> What are the pros/cons?
>>>>
>>> If it is not potted and has been sitting in a damp place it may have
>>> absorbed moisture, which could cause insulation breakdown later. I am
>>> not sure what the best way is to dry it out, but someone will know.
>>>
>>> -- 
>>> 73,
>>> Vic, K2VCO
>>> Fresno CA
>>> http://www.qsl.net/k2vco
>>> _______________________________________________
>>> Amps mailing list
>>> Amps at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>>
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps