AM on the DX-60

[Alan W. Fremmer]

Gentlemen & Ladies:
 
After some effort have restored AM on the DX-60 by replacing one burned out  
and two way out of spec resistors around the 6DE7.  Now, I can hear myself  on 
a monitor receiver nearby by the audio is muddy.  I made some  measurements 
and I'm hoping someone out there can help me isolate the  problem.  All 
voltages were measured with the rig tuned to 40 meters, 150ma  on the plate in CW and 
dropping to about 87ma in AM.
 
12AX7            Schematic                    Measured
 
Pin  1                   115                            98.4
 
       2                      0                                 5.0 mv
 
       3                       1.2                              1.164
 
       4                     -                                    0.0
 
       5                    -                                    0.0
 
       6                      70                              98.5
 
      7                   -0.7                                -0.891
 
       8                     -     0.0
 
      9   -                                   0.0
 
6DE7                   
 
Pin  1                   600                                 640
 
       2                     22                            fluctuates (starts 
around 7 volts and drops over time)
 
      3                    -                                forgot to read
 
       4                  -                                   0.0
 
       5                   -   -0.3 mv
 
      6                  22                               4.02
 
       7                    -1                            -137mv
 
       8                  -                                   -0.4mv
 
     9                 -                                        143           
                      

As always, your help is much appreciated, and even if I can't completely  
solve the problem, I learn a lot and am encouraged to go on.
 
73, Alan - KB2HEI

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