[HAM] Case heaters

[Ed Greany]

I lived in Honolulu and had an M1.
   
  In the city and close to the shore, moisture wasn't bad but mildew was always something to guard against. After all, Hawaii IS tropical.
   
  Upper elevations had considerable rain.
   
  I never had a problem with the organ from moisture, mildew, mice, cats, or the little lizzards that frequent the indoors often.
   
  Ed

David Anderson <thermionic27609 at earthlink.net> wrote:
  
Hi Mike,

That's a very interesting piece of data. I know that console organs 
sometimes had heaters installed--they're noted on the organ 
schematics--but I didn't know they put them in the M-series organs, 
too. The purpose I've usually heard is that they were there to keep 
the oil in the TG bearings warm enough in churches that might only be 
heated for services, but in this case, the heater is clearly there to 
keep moisture down.

I don't know what the climate's like in Honolulu, but I do know that 
tropical environments played hell with electronics of this era.

David

On Mar 3, 2008, at 3:55 PM, Mike Kearney wrote:

>>
> Hi David,
>
> My 1955 M2 has a red paper tag on the power cord that says 
> something like:
> "Important - This power cord should be connected to electric outlet
> which is active at all times. Do not plug into outlet controlled by
> switch. Uninterrupted power is required for a (unreadable) resistor
> built into the console to (unreadable) excessive moisture out. Current
> consumption is less than a small light bulb."
>
> The original owner told me this M2 was bought in Honolulu. I don't 
> know
> if the resistor was unique to items going overseas or common to all 
> models.
>
> Regards,
> Mike

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