Document uploaded to Post 13.

Try http://frank.yueksel.org/sheets/084/6/6BV7.pdf there are AWV data sheets there.

there are AWV data sheets there.

Already posted in #13 above.

Well, after looking at that data sheet, if you weren't using the diodes, you could rewire the socket and use a 6M5 and I bet nobody could tell the difference in volume. Just make sure of course that the bias is -5.0v as needed by the 6M5.

What was it with Radio & Hobbies fitting the 1956 Lt General with the 6BV7, Why did they use mostly AWV valves in that set,

did they get some sort of a deal using all this manufacture.

5 years earlier they had the 1951 Lt General valve lineup with 6AN7,6N8,6M5 and 6X4 which in my opinion was a better choice than the

6AE8,6BH5,6BV7 and 6X4 in the 1956 version,

Hi Brad how did we go with the 6BV7 comparison photo ?

Photo uploaded to Post 4.

The most common version I've seen are the black ones, not sure if they were made that way (like some of the 6AQ5's were), or became black after overheating.

The inside of the glass was painted black in an attempt to improve the plate dissipation.

Thanks Ian interesting point.

In reading the LTGeneral brief, Radio & Hobbies wanted a constructors radio in the Lt General that was minimalistic Design and so they said the 6BV7 suited their needs with enough gain so as they could do away with a preamp, and in their view, most of the constructors had good coverage in a big city and the 6BV7 would be sensitive enough to do away with a preamp and give a couple of watts output.
In its last incarnation it looks like a 6M5 doesn't it?

Looking at the specs the 6M5 pentode seems to have appeared within many triode pentode tubes. 6CK6 video amp can sub a 6M5 as long as you tie pin 6 to the cathode.

A case of not re-inventing the wheel. Many early tubes just had heaters & bases changed while the rest remained the same.

Document uploaded to Post 4.