[R-390] Gettering old tubes

[2002tii]

Jerry wrote:

>Those strange audio geeks love NOS tubes but they cook the tubes for several
>days on filament only without grid or B+.  They swear the getter(s) do the
>job 90+% of the time on 50-70 year old tubes.

Just remember, they swear to lots of things -- most of which are 
unadulterated BS.

Bottom line, with receiving tubes a few days of any treatment that 
doesn't melt the glass can't do anything useful about gas.

Best regards,

Don