Which 6072 tube ? NOS,JAN ,NIB ??

[nelly]

I been looking for a 6072 valve 5 star for a 251 build. I understand the military grades are 'The one's' ,to have .... pre nasa.

I have seen GE 6072....told 1956-1966  are best?  (Seen a 1953 for sale )
But what does all this mean...which specific type, do I look out for NOS ,NIB,NOS JAN ?.

The GE seem to come in Black or grey backplate's.  The RCA in Grey.....though seen a RCA platinum !
None of them actually say 5 star. Can anyone enlighten me, what all this means?

Which type to buy?  or any recommended sources ,for old valves ?

 

[beatnik]

buy a tube tested for low noise and microphonics , GE, JAN, RCA are all good makers, production year doesn't matter, tubes are not wine

 

[ln76d]

Congratulations! Two different topics for the same tube! Try the same in few others categories

 

[hitchhiker]

The other thread has loads of good info.  BTW, NIB (new in box) NOS ( new old stock) pretty much the same,  now you are down to one choice  (JAN )  from your title which is a good tube even if it's not the very, very, very best!

 

[nelly]

I will look out for a 5 star GE ,yep 1in 3, i've read is good.
Any Date...its not a bottle of wine,....Great...was only what a read in a thread ,in a recording forum

Excuse my ignorance on NOS and NIB....not in box...  Lol...  thought it was different spec...
Thanx All, for putting me straight.

Nelly

 

[CJ]

how much money ya got?

good info here>

http://www.kcanostubes.com/search/node/6072

https://web.archive.org/web/20130604042043/http://www.jumpjet.info/Pioneering-Wireless/eMagazines/VTV/vtv.htm

 

[nelly]

I found a guy who's doing me a great 50's GE 6072 military grade,fully tested.$175
Proper job. Happy camper.
This my first build , has turned into an international affair ....Australia,Denmark,Europe,UK,and USA  !!
When I started,thought could source parts in UK.But once your bitten by DIY bug....fever pitch reached in a matter of Hour... Lol

Thanx for everyones input,
Nelly