[ARC5] BC-375 Tube Sub Project: 7984 Curiosity

David Stinson arc5 at ix.netcom.com
Sat Nov 9 14:47:23 EST 2013


Got half a dozen used 7984 tubes in to try as a sub for 211.
Results encouraging so far, but a long ways 
from being ready to report anything.

One curiosity: 
What would make the triode-connected 7984 as MO 
oscillate strongly on 10 MC but be slow to start,
causing bad chirp on 7 MC? One would think it would
go "the other way-round." It's not the 7 MC tuning unit because 
the original 211s behave with this one.
Any ideas? 
73 Dave S.


More information about the ARC5 mailing list