No. The 2-B uses the 6AQ5 and the R-4 Series all use the 6EH5.
The 6EH5 is not a Beam Power Pentode, the 6AQ5 is.
The third 'grid' in a Pentode can be either a spiral wrapped grid like the other two, OR it can be
'plates' that 'focuses' the electron beam more fully on the Plate. Primary result is greater power
capability as a result of 'all' Cathode current reaching the Plate.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Neil M Califano wrote:
Is the AF output tube in the R4A swappable with the same tube in the 2-B? I
Googled but it is not clear. Btw, what is a beam pentode or tetrode? Is 6EH5 in
V7 one of these?
_______________________________________________
Drakelist mailing list
[email protected]
http://mailman.zerobeat.net/mailman/listinfo/drakelist
