Mel,

Thank you very much for the reply.
Sometimes, the most obvious solution
is the one that seems least probable to
the person with little experience. I did
think about this matter a lot and even
considered using a 10x the output freq.
from the PIC dividing it with an ext.
IC to the original frequency. However
my project is confined to small area of
16 x 12 mm and this solution wasn't
possible. I like your suggestion and I
will most definitely use it for my project
with a slight modification. I will need to
make a lookup table for the generation
of tones to cover all standard freq. From
67 - 250.3 Hz (CTCSS) & non-standard
EIA tones in that range. Mel, I really appreciate your help and apologize for
any inconvenience I might have caused
by my persistence.

--
Sincerest regards,

YZ7REA Vladimir M Skrbic
4N7ATV Repeater Administrator
YU7GHZ Radio Club President