DX-100B Problems Continued

[Dale Putnam]

HI Mike,
  If I can rely on memory, really long ago.. I used a DX-100B for a many a year, and I remember having that description of problem, low drive, weak grid, low drive, and I had a SB-10 tied to it too, that was suspect for a bit.. but quick eliminated because cw had the same problem... after many an hour of trying, and not... I finally settled on vfo issues... same circuits that are used after the Xtal, and vfo became under scrutiny, and by especially selecting the coupling caps, and indiviual tubes... I gradually got it cured... step by stage. But only from the vfo to the driver, not the driver or final. Wish I had more specifics... but I haven't had the fun of having one for quite a while.. that may be cured before the summer is out tho. 
  Good Luck, --... ...--Dale - WC7S in Wy> Date: Wed, 6 Feb 2008 15:20:09 -0800> From: mike46 at SHAW.CA> Subject: DX-100B Problems Continued> To: HEATH at LISTSERV.TEMPE.GOV> > Despite previous help I'm still struggling with a DX-100B. 160 and 80 > meters have about 60 watts out, 40M about 40 watts, nothing on the higher > bands, no difference on CW or AM.> > Driver current and grid current indicate very low to zero, depending on the > band, on the front panel meter. Voltages at the various tube pins seem OK, > don't have any data on what the signals should be at the various stages. > Tubes have all been tested and substituted with no problems found.> > Where to go from here?> > Mike VE7MMH > > -----------------------------------------------------------> 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.aspx?list=HEATH> To post - HEATH at LISTSERV.TEMPE.GOV> Archives - http://listserv.tempe.gov/archives/HEATH.html
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