[Boatanchors] 6SG7 Question

[Jim Wilhite]

The National 183D and HRO 60 both used 6SN7s in them.  there were others as 
well, but I am just too tired to think.  Although, receivers like the HRO 60 
were no reason to continue manufacture of the tube.  They were, however, 
built subsequent to the AR 88.

73  Jim
W5JO




>I bought 10 6SG7s from a UK dealer who was closing down, a few years ago.
>
> I put them away with my other AR88 Spares, waiting for the right day to do 
> a restoration job.
>
> That day was last Saturday.
>
> On closer examination of the 6SG7s, I noticed they all had production date 
> stamps June 1982 ..............yes 1982.
>
> Can any one tell me why 6SG7s would be still being produced 40 years after 
> the AR88 was designed?
>
> Pete