Simple - put the transmitter on repeater "A" on the same frequency as the
receiver in repeater "B" then put the transmitter of repeater "B" on the
same frequency as the receiver in repeater "A".

It's most effective if all four frequencies are the same frequency. This
process will guarantee results - both repeaters will talk to each other and
back.



"Rich" wrote in message
...
How can I take two UHF repeaters 40 miles apart talk to each other?

From town "A" a Mobil can talk to it's repeater 25 miles.
A person drive 30 miles away to school and can't hit the repeater. Can I
mount a repeater in town "B" to talk to town "A's" repeater and back?

Rich