[Amps] Storage of 813 bases amplifier

[Eddy Swynar]

On 2013-01-05, at 1:47 PM, Carl wrote:

> They may still be made in Europe, I bought some NOS Swedish military Philips with 1999 date codes last year.
> 
> Since the 813 came out in 1939 Id go for the newest date codes I could find and hope for the best. Im sure a person could test them in an apartment/condo without an antenna just to test and getter.
> 


Hi Guys,

I built my 2x813 kilowatt amplifier here some 20 years ago, using 2 of 3 used tubes that cost me all of ten bucks in total from a local friend...

About 5 years ago I thought I should replace them, and did just that, with a pair of N.I.B. 813s that were given to me---free---by VE3IHK, who stored them for years in his basement...and when I first got them, I kept them in my fruit cellar...

...And as for the date code stamped on the tube boxes...? JULY 1957! I was all of five years old at the time...

Those rascals are STILL going strong here, & see daily use---they're no different from the old TIMEX watch commercial slogan, IMHO...

~73~ de Eddy VE3CUI - VE3XZ

PS: All the 813s that I've ever used were of the graphite-plate variety---no tin plates used here, ever, although I do have a pair in my rubble pile for possible "...future use."