Post by crambone on Nov 15, 2019 18:26:00 GMT -5
I have a Tram D201 that on AM shows signal from a generator on the meter of the TRAM but no audio tone (400 or 1000Hz) but I can hear it on all other channels but they dont show the signal on the Tram meter?
I tried tuning L400, T400 & T401, it seems nothing happens when I adjust T400 and the adjustment is very loose and sloppy, I removed T400 to take a look at it and it indeed is shot. So that is the first issue I found.
Then I performed the neutralization per the service manual instructions and that went great. I'm getting 4 watts swinging to 12.5 watts.
So i decided to look at the synthesizer board and hooked up my scope for the 400 MHz calibration to J100A and disconnected the plug. The frequencies were off but only around .0005 MHz so I adjusted them per the service manual and all is good. Then I moved on to the 20 MHz Calibration and this is were I have an issue. I'm not able to adjust anything? C126 to C137 just remain were they are and they all seem off around .01 MHz.
So I decided to try the 20 MHz mixer so I followed the steps but I'm not finding T100? I see it on the schematic in the SAMS but that's a hand wired schematic. When i hooked my scope up to J100B ant it showed 21 Mhz not the 20 MHz asked for. I didnt adjust T101 figuring without setting or finding T100 first it might cause more of an issue than I want at this time.
Any suggestions would be great?
I tried tuning L400, T400 & T401, it seems nothing happens when I adjust T400 and the adjustment is very loose and sloppy, I removed T400 to take a look at it and it indeed is shot. So that is the first issue I found.
Then I performed the neutralization per the service manual instructions and that went great. I'm getting 4 watts swinging to 12.5 watts.
So i decided to look at the synthesizer board and hooked up my scope for the 400 MHz calibration to J100A and disconnected the plug. The frequencies were off but only around .0005 MHz so I adjusted them per the service manual and all is good. Then I moved on to the 20 MHz Calibration and this is were I have an issue. I'm not able to adjust anything? C126 to C137 just remain were they are and they all seem off around .01 MHz.
So I decided to try the 20 MHz mixer so I followed the steps but I'm not finding T100? I see it on the schematic in the SAMS but that's a hand wired schematic. When i hooked my scope up to J100B ant it showed 21 Mhz not the 20 MHz asked for. I didnt adjust T101 figuring without setting or finding T100 first it might cause more of an issue than I want at this time.
Any suggestions would be great?
