Google Francesco ... I'm pretty sure he has that code on his website still.
There must be a hundred variants, all pretty much the same. Weeder is
another popular one. I personally like the OM3CPH version. I can probably
email you a half-dozen. Most of the 16F84 ones are pretty bad from a code
point, making it hard to incorporate your IF, but they all pretty much work.

Unless you have a basketfull of F84's laying around, almost any other part
is a better choice. A lot of people use the 628 these days, which is about
twice an F84 at a third the price. It usually isn't real tough to make the
code changes. (A lot of F84 code, though, it so bad it is hard to make any
changes).

If the email on your posting is correct, I'll email you a few.

...

"Howard" wrote in message
...
Does anyone have circuit and software listing for PIC based freq readout,
preferably with IF offset. 16F84 would be ideal. I've tried to contact
IK3OIL for the software for his counter but am unable to.
Thanks. Howard G3UPZ