Steve,
I made up a softrock lite II for 8.83 MHz for a Kenwood TS120.
When using a 35 MHz crystal in my Softrock Lite II
I had a lot of trouble getting enough amplitude out of the crystal oscillator and amplifier to drive the flip-flop divider.
It now works after :
Both transistors (3904 and 3906) selected for higher gain.
I used a little multifunction TC1 box to measure hfe.
.....
These part values may be a little different than the official values
because I built my own Lite II with the parts I had on hand.
C10 ( like C3 in lite 6.2) (base to emitter on Q1) 47 pf
C11 ( like C4 in lite 6.2) not used
C12 ( like C5 in lite 6.2)(between 2 transistors) 27 pf
R16 (base of second transistor to gnd) 10K (replace 22k )
The signal still looks small on a scope, but since it is now centered around 2.5 V it works for the CMOS parts.
........
I did not try the 1000 pf for C4(lite 6.2) because it is not there on Lite II. - Maybe a good thing to try?
regards
David, K0IMH
