[Gonset] Gonset G-76 update

[David L. Thompson]

I started working on the Gonset G-76.  I found the 6BE6 (Rx converter) had
both sides bad.  I did not have a good spare but I did find one in the junk
box that was just good on one side and bad on the other.  I did replace the
totally bad 6BE6.  The 6BE6 is crucial to proper operation of the 2nd IF.
Both 20 and 40 seemed to receive better but 80 was still dead.  I can hear
my signal generator on 80 but its much weaker than 40 and 20.

I notice that the G-76 I have has major changes from the original G-76.  I
have the addendum that details the changes. CW now keys the cathode rather
than the final.  Two tubes were added to the final stage V18, an OB2 screen
control and V19, a 12AL5 clamper tube.  The final is still a 6DQ5 and the
modulator is now a pair of 6DQ6's. The size of the chassis is smaller (deep)
by 1".

I will finish testing the tubes (TX and modulator) and then check the
resistances and voltages.  The VFO seems to be fairly close and I hear the
beat note on 80 to 10 OK.  The receiver seems to be off calibration.
Closest are 40 (70kcs) and 20 (80 kcs).  Worst is 10 which is 400 kcs low.

There is also some hum from the power supply initially.  I also found
several nuts missing and will replace them before going further.  One 4-32
nut fell out when I removed the cover and appears to secure the tank coil to
the chassis via a spacer and screw which are loose.  Now to find where the
other nut goes.   Looks like I have plenty of work to do.

73 Dave K4JRB