[Amps] 200-ohm tank and "un-un" in HF amp design?

[Peter Voelpel]

Who talked about a YC-156?
There are tubes with less capacitance around.

The coil value depends on the tube capacitance.

73
Peter

-----Original Message-----
From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Jim Thomson

##  No way in hell is 3 uh gonna work for the  lead inductance.  That
circuit is commonly called a  L-PI.    Typ coil values are .3 to .7 uh. 
And no, it doesn't make the amp unstable.   A buddy recently completed
a 80-10m YC-156 GG amp.   Now that tube is 35 pf  from anode to grid..
and rises to 50 pf when the grid flange is bolted to the chassis.