[Boatanchors] Tube data

[telegrapher at att.net]

I have a question.  yes, again.  I looked up a couple of what i thought 
were FAA numbered tubes.  Whether or not they are is or can be a matter 
of discussion.

The 6919 is a "high Perveance twin Diode" for use in Computers.  O, 
what's "High Perveance" mean?

The other, a 6687/E-91H is a dual control heptode used in computers. 
Since tube based computers were before my time, what actually were these 
two used for?

There are no subs that i could find in any of the tube bases for these two.

A 7062/E-180CC is a twin triode used in computer applications also.

A 7036 i believe it said was a pentagrid.  Didn't write it down.

I suppose the thing to do here is to use these as targets for my Chinese 
SKS rifle at 50 yards.  WIth unadjustable sights it'll take me lots of 
rounds to hit anything unless i put them side by side and then there is 
no guarantee!!!!

Larry
W0OGH