diytube.com

Another relatively unknown 807 substitute, the 5933, AKA 807W, packed into a short and stubby jug, UX5 base:

Tung-Sol: http://frank.pocnet.net/sheets/127/5/5933.pdf

Sylvania: http://frank.pocnet.net/sheets/137/5/5933.pdf

And here's a vintage Stancor article about building an 807 PP, UL amp:

http://www.tubebooks.org/file_downloads ... matics.pdf

and if you want to "cheap out", just use 12SN7s and 1625s.

/ed B

Neat looking tubes, like a cross between a fat 6SN7 and an 807. NOS 807Ws are readily available. Is the "W" a ruggederized version of the 807? The specs appear identical.

The entry on nj7p lists the Pd as 30W, rather than 25W.

http://www.nj7p.info/Common/Tube/SQL/Tu ... ?Type=807W

kheper wrote:The entry on nj7p lists the Pd as 30W, rather than 25W.

http://www.nj7p.info/Common/Tube/SQL/Tu ... ?Type=807W

I remember vintage transmitters replaced with a "hotter" tube and rebiased.... then the next owner would drop in the spec'd tube and it would melt