There are four ways that antennas and enabled rotators
can be selected:
1) Manually by the front panel of the MBD-12F,
2) Manually by frequency or band change on the
front panel of the transceiver,
3) Automatically by frequency or band change by
the remotely controlled transceiver,
4) Automatically by a remotely controlled personal
computer via LAN port to the MBD-12F.
On the front panel is a set of twelve illuminated push
buttons for manual selection of antennas, twelve "Busy"
LEDs to indicate which antennas are in use by other MBD-12F
Controllers, eight LEDs to indicate rotator selection,
one LED to indicate when the radio is transmitting, one
LED to indicate the controller is in Split Antenna mode
and one LED to indicate when the MBD-12F is connected
to +13.8 Vdc power.
The MBD-12F receives from the transceiver the power
supply (13.8VDC), the Send line and the information about
the band in use. The controller recognizes the following
1- CI-V (Icom)
2- BCD (Yaesu and Elecraft)
3- RS-232 (Kenwood, Icom and Elecraft)
Frequency Driven GPO:
The MBD-12F provides eight tuning points for automatically
controlling shortened antennas with high Q coils. The
tuning points are easily found by the operator using the
radio and push buttons
Band Data Output:
The MBD-12F receives the radio information by CI-V
(Icom), or by RS-232, or by BCD and provides a BCD output
for use in external equipment.