Re: S-85 refurbish: I've got a problem during the RF alignment of bands 1 and 2 - trimcaps don't peak!
开云体育Emanuele here is your suff edited a bunch ? Things get darker and darker. ???No.. just more interesting -
I then tried to isolate the problem stressing the ANT resonant circuit alone, with the following setup: ?ok The S-85 was turned OFF. NOTE: in these last tests the right marker is where the peak should be. On band 1, with the Main Tuning dial set to 1.4Mhz (as per service manual), i've got the following results: ? Skip to here ??????????? ?????????????????????????????????????????????????????????????????????????????????????????????TRIMCAP C4 fully released (lower C): my markups Do I read this correctly ?? ?if so? the First RF ?almost tunes to 1400? so as you said , not an image problem. And it is just a bit off. However is the 600 kc area is poor in sensitivity? we have to think harder.?? I am on overtime now, so will look tomorrow ? ? -- don??? va3drl |
don Root