[Central-Electronics] Re: +AFs-Central-Electronics+AF0- Re: +AFs-Central-Electronics+AF0- Re: +AFs-Central-Electronics+AF0- List alive?

[Lamb]

+AD4- I still have a 4 X 6AG7 amp.  Ran 1000 volts on the plate and the amp
+AD4- still has the original tubes.  Could not burn them out.  Ran about 200
+AD4- watts input+AD4- +AD4- 73,  Colin  K7FM

This is interesting in that you were probably also in the PDX, OR area. I
got the idea from K7GIE, Charlie +ACI-Doc+ACI- Dockhorn (God bless his soul) as he
ran one with a 20A. He was a young Navy doctor stationed at PDX and always
had time for a new ham on SSB. A few years later he was terminal and left
us. I will always remember what a nice person he was.

Rolynn

Hi Rolynn:

I was and am in the Portland area, but got my circuit from CQ in the '50s.
Simplest circuit I ever built - almost.  Input to cathodes.  Ground all
grids.  ARC-5 tank coil (5.3 to 7 mhz, rewound for 75 meters).  Chassis was
about 2 1/2 inches wide and the coil and tubes were all lined up in a row.
Power supply had plate meter and just tuned for max output.  Drove a three
wire sloping 75 meter vertical from the '55 ARRL Antenna Handbook.  Worked
like a dream.  Only problem with the 6AG7 tubes was that I could never see
if the plates were red.  I obviously did not push them enough because they
lasted for about 2 years until it went on the shelf alongside the retired
Howard receiver and 6AQ5 sandwich box transmitter.  I had a number of spare
6AG7 tubes and felt guilty that they sat unused.  After reading a mythical
article by Bill Orr about putting the 304TL tubes in an oil bath, I thought
about turning the amp upside down and sticking it in an oil bath to see if I
could get 400 watts out.  But, being a high school kid I was still too much
in awe of high power.

73,  Colin  K7FM