[Boatanchors] WAS Johnson Pacemaker NOW Phasing type SSB

[Richard Knoppow]

----- Original Message ----- 
From: "Lee Buller" <k0wa at swbell.net>
To: "Boatanchors" <boatanchors at mailman.qth.net>
Sent: Monday, January 06, 2014 9:53 AM
Subject: Re: [Boatanchors] WAS Johnson Pacemaker NOW Phasing 
type SSB




When I was a kid and had no money....I did get an SB10 
through another ham for a song. Build a PS out of a TV 
Chasis and proceeded to modify my DX-40/VF-1 combo. There 
was an article in QST how to do it. Had to change bias to 
make the 6146 linear.

Well, the real issue was the VF-1 and drift. I made some 
design mods to it...remember I am 16 years old. I regulated 
the plate and the screen...change out all the resistors and 
doubled the wattage and made sure all the caps were NPO. 
Then I looked for a good 6CL6. They are not all equal and 
had to be a Sylvania tube. That was stable.

The thing worked but was hard going from SSB to CW. Lots of 
wires....lots of controls....lots of bad on-the-air 
reports...lots of fiddling with knobs.. But, I did get it 
going.


I finally ask Grandpa for a loan and got an HW-100. A year 
later...he forgave the loan. Yea Gpaw.


Lee - K0WA

    No money can make you very inventive. My first SSB rig 
was a home brew vfo-exciter built from parts given to me.  I 
used an ECO oscillator circuit copied from a General Radio 
frequency meter. It was very stable partly because there was 
lots of space in the chassis and it didn't heat. This 
exciter was used with a modified BC-375. I was then given a 
B&W SSB generator, a 51SB, the self-powered kind. I modified 
the BC-375 so I could run it as a linear amplfier, probably 
close to Class-A.  The system worked believe it or not and I 
made a great many contacts on it. By working a couple of 
switches I could still have AM and CW. I worked a great deal 
of CW because I was running low power and did not have an 
efficient antenna.  I still have all this stuff and may put 
it on the air again one day.  The B&W phasing generator made 
very good sounding SSB and was pretty easy to adjust with 
the aid of a scope. The scope was a 3" Heathkit which had 
direct connection to the deflection plates so I could 
monitor the RF out of the TX. I think I still have that too 
but it may have been lost in a move.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com