Patrick, Plenty of work, but a lot of fun. The rig will likely be worth quite a bit when you are done, maybe pay for retirement!
Brett N2DTS > > I have been working o that KW I rescued from the scrapyard. > > figured out the screen supply wiring that had been cut and the missing > connections for the RF deck, got the bias and screen supplies up, > filament supplies up, figured out keying, inrush limit, HV rectifier > system, and interlocks including the airflow switch. I did discover it > keys in part by turning the 4-1000 screen volts on and off. > > still have to: > `replace broken chokes in plate power supply. > > `upgrade power supply capacitors. > > `remount rectifier sockets a bit lower to have the 575's clear the > variacs with more ease. > > `figure out some loose wires connected to some HV resistors. > > `recondition modulation transformer ('cook' in a test fixture to heat > it up, drive any moisture out, and then patch a couple places in the > insulation.). > > `find some better 304TH's or 304TL's (mine have one filament out). > > `find plate and grid caps to fit the 304's > > `find a better 4-1000A. > > `the turns counters on the dials need attention. > > `devise a T/R assy (the original was apparently a relay-based > controller for the rig) > > but most of this will be easy as the cut wires in the screen supply > harness were the hardest, several were interlocks or overloads. > > I felt very good to put the old 4-1000 in the unit, and being able to > adjust the filament voltage, etc., even if that tube is bad, it still > lights up ok. > > The web page is still at: > http://208.190.133.201/tuckerkw/tucker_transmitter.html > > Patrick > KD5OEI > _______________________________________________ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio