[Milsurplus] [RCA] SRR-13 Article, more

[Hubert Miller]

I don't think it's correct to give a blanket assessment of submini tube
longevity. The proximity fuze tubes WERE built to

withstand extreme G forces, but i really doubt the run of the mill portable
radio tubes were anywhere near the same 

kind of standards. Some of the submini tubes ( 5676 comes to mind ) were
actually rated for 100 hours life. Which

reminds me, i have a grid-dip meter that uses this tube; maybe i should be
thinking about an FET replacement, which

would also eliminate the 67.5 volt battery. 

 

BTW - one fellow on the regen receivers group built a small regen receiver
using proximity fuze tubes he had on hand,

and reported the tubes' performance seemed to degrade in a short time, in
hours. This is only anecdotal, but i wonder.

 

The SRR-13 doesn't have any kind of cooling provisions, is that correct?

Which reminds me, i have somewhere one of those Navy SSB low-power exciter /
receivers that was notorious for 

failures due to, i believe, tight packaging and cooling. Another item whose
disposition i need to decide.

-H 

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