[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