Thanks for the quick response to my questions concerning this amp. John, I
was ready for some salty remarks (hihi) and I did clean my glasses and take a
second or third look at the thing. I thought I had missed something since
going to USAF Radio School in the early 50's. Guess that tells u why I mess
with vacumn tube rigs. Anyway thought I better get some expert opinions before
starting to cut and chop to get it to a more conventional type. The
construction of the amp is above average for a homebrew rig. A couple of other
things There is a RFC choke coming off the G1 connections going to the 10K
resistor then to the grid meter (0-30ma shunted with a 50 ohm 10 watt resistor)
It does read about half scale peaking normal as u tune the grid circuit. Also
a .01 bypass cap at the meter. The input coil is grounded in the middle
through a RFC choke making a double coil, tuned by a split stator cap. One of
the tuned circuits goes directly to the screen grids and the
other feeds the neutralizing voltage back to the input from the plate. No bias
circuits of any kind. The few times I used it I got good reports using a Elmac
AF-67 exciter. Will probably change it to a more conventional type. Thanks
again Bill K5PML
