[R-390] XTAL Calibrator.

[Pete Williams]

G'day   list....Well, this   R-390A  I'm  working on  has more issues
than  some presidential  aspirants...  The latest  failure  was  the Xtal
calibrator but the   xtal not  at  fault.
Problem turned out to be the 200kHz  injection​ capacitor  voltage  divider
C312  and  C313 with  C 312   very  leaky.
However  I  have  a  question, and in the process of  of  selecting  a
replacement C312  and  with the  RF module on my  test  cable  so  I
could  monitor  changes,  found  that different  value  caps obviously
will  change the injection level to the multivibrator.
SO .... would  any one have a optimum figure  for the  injection voltage
to  get maximum level of  100 kHz  harmonics on   all  bands .
I  am  aware that high value of  injection  voltage  changes
characteristics but   what value  were the  designers looking  for at  R
222 /R223 junction ?
Curious !
Cheers
Pete  VK3IZ