[AMPS] Henry 2kd classic

[Tom Rauch]

> Any dowside risk to gutting the grid cap/choke circuit in the L-7 and
> replacing them it Cu straps between the grid terminals of the socket
> and chassis? Will this affect the termination impedance that the tuned
> input sees significantly?

There are always risks when we change things in marginally stable 
systems unless you just buckle down and do everything correctly.

If I owned a 30L1 I'd use "cathode" bias and ground the grids 
normally, and add neutralization. I'd never use four 811A tubes in 
parallel without cancelling feedthrough capacitance.
73, Tom W8JI
W8JI@contesting.com 

--
FAQ on WWW:               http://www.contesting.com/FAQ/amps
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com