[Elecraft] K2 40 tTr VCO lock

H. Cary III HCary at wclynchburg.org
Sat Mar 25 16:36:32 EST 2006


K2 #5266 aligned beautifully after I fixed C-6 which the Cheap 'N Dirty Signal Tracer found in about 2" flat.  I had it on the air and made about 100 cw contacts before adding some mods:  DSP, SSB, NB, 160 meters and 60 meters. I had a problem which was resolved but involved a master reset...so I started on a complete re-alignment today.
 
With the exception of the 40 meter band, the VCO alignment went "by the book" -  7000 and 7300 Mhz both read 7.92 volts  and it does not vary as I tune  between those frequencies.  I have checked the parts which were replaced in adding the mods noted above and re-heated C-71 through 75 and D-19 & 20.  Hooked it up for testing and it's still a rock solid 7.92 volts on 7000 through 7300.
 
L-30 is the correct inductor; T5 (wound by Mychael) and D21-26 all worked the first time around on the VCO alignment so I doubt there's a problem there.
 
Does anyone on the reflector have any idea where I should look next?  If so, I 'd appreciate it!
 
73,
Cary, K4TM
Lynchburg, VA


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