[Hallicrafters] Cold storage for vaccum tubes

[Rich Oliver]

I can't offer personal experience but I do recall seing a letter from a 
fellow who left a box of 100th's in a shed over winter and reported that 
they all died.

73, Rich

Wa4uso at aol.com wrote:
> Should I bring my 100th's and 250th's in out of the cold? Does prolonged 
> exposure to moderate cold temperatures cause the filament structure to become 
> brittle? Case study, I brought in two NIB RCA 808 triodes from the cold, let them 
> sit for a day, carefully brought the filaments up to the correct AC level and 
> within one hour of testing the filaments they had disintegrated and fallen to 
> the bottom of the tube.
> Your feedback in this matter would be appreciated  73  WA4USO  Darell Darby 
> 
> 
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