User's Manual

A-1
Appendix A
Frequency and Jumper Changes
Opening a Base or Relay
As preparation for changing the Base Station's frequency, baud rate,
protocol, data bits, stop bits, and parity; or for changing a Relay Station's
ID, frequency, or 422 termination, the case must be opened to expose the
circuit board with the switches and jumpers. Be sure you disconnect power
before starting.
Turn your Base or Relay Station upside-down, and unscrew its single
phillips head screw. If you don't completely remove the screw, you can use
it as a lever to pull up on the cover.
Otherwise, insert a fingernail, credit card edge or small screwdriver blade
into the gap between the Base and side of the case, and gently use it as a
lever to lift up the edge of the Base. Then grasp the edge of the Base and
open it outward like a door. This exposes the reader's circuit board, as
shown below.