"Jon M. Hanson" wrote in message
...
Does anyone here use a frequency counter to find frequencies "on-
site"? It looks like Optoelectronics is a big vendor of them. How useful
are they? What features are important in a frequency counter?

I have a couple of the RS counters. The last one I picked up was
the 22-306 model. Got it on store closeout for $40...

I also have 2 of their earlier models. When I got the 306, I should have
looked and bought every one I could find.

Only bad thing about the 306 is the selectable gate uses a 50-50 ratio to
count
and display. For example, in one case it counts for say 10 seconds to get
an
accurate count, then displays for 10 seconds, then counts, then displays....
It would have been a trivial matter is firmware to count for the gate,
transfer
to display, then reset the gate and count again. That way with a 1 second
gate
you'd get counts updating every 1.01 or so seconds instead of 2 seconds.
Still, not too bad. Except for low frequecies when it does a 10 second or
so
gate and only updates the display every 20 seconds.

Mike