AM on the DX-60

[Brian Carling]

Alan - what type of microphpone are you usimng with your DX60?

I hope to have mine up and running soon and could offer some comparisons.
What does the plate current do when you speak into the microphone?

Alan W. Fremmer wrote:

>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
>
>-----------------------------------------------------------
>Products bought, sold or traded here is the responsibility of the
>parties involved.  This list and the City of Tempe are not responsible
>for losses or misrepresentations of any kind.  Buyer beware!
>
>-----------------------------------------------------------
>This list is a public service of the City of Tempe, Arizona
>-----------------------------------------------------------
>
>Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
>To post - HEATH at LISTSERV.TEMPE.GOV
>Archives - http://listserv.tempe.gov/archives/HEATH.html
>
>  
>

-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://listserv.tempe.gov/archives/HEATH.html