9600 Baud Mods

    *Note that modification of this
    equipment may void any expressed or implied warranties.
    The following procedures describe how to connect
    a 9600-bit/s packet radio modem to the AR-146/AR-446 transceiver. (If the modem is
    external to the transceiver you will also have to drill a hole in the bottom cover of the
    transceiver after removing it and install a grommet in the hole for routing the cables
    that interconnect the transceiver and modem.)
    1. Power off the transceiver and disconnect its
    power cable.
    2. Place the transceiver top down on your work
    bench with the front panel closest to you.
    3. Remove the 2 screws securing the bottom cover
    and remove the bottom cover.
    4. Near the center of the exposed printed
    circuit board are 2 rows of solder pins, as illustrated in the figure. One row has 16 pins
    and the other has 9 pins.
    5. Using shielded cable, connect the center
    conductor of the cable to pin 2 of the 9-pin row of solder pins and connect the shield of
    the cable to pin 1.
    6. Connect the other end of the cable to the
    9600-bit/s modem by connecting the center conductor to the output of the modem and the
    shield to the modem ground.
    7. Using shielded cable, connect the center
    conductor of the cable to pin 15 of the 16-pin row of solder pins and connect the shield
    of the cable to pin 16.
    8. Connect the other end of the cable to the
    9600-bit/s modem by connecting the center conductor to the input of the modem and the
    shield to the modem ground.
    9. Replace the cover and tighten the 2 screws
    that secure the cover of the transceiver.