[R-390] More progress....

Jim Brannigan [email protected]
Wed, 08 Jan 2003 18:02:41 -0500


I pulled the RF deck (again) to look at the 6BE6 third mixer MOD.  It took a
while to work up a schematic as the area is very crowded with components.
The rear panel "SM output" was off the grid of the 6BE6, so the take-off was
at the second mixer output.
The circuit is a standard mixer design.  All the original parts remain and
additional parts are there to power the screen grids of the 6BE6.  I can't
figure out the rational for changing the mixer.

The circuit will be restored to the original 6C4 mixer........

More to follow..

Jim