Connecting the Power + SWR Meter
DC Power connection
The power lead supplied with the meter mates with the black DC jack on the rear panel of the meter. The
other end of the cable ends in tinned wires marked red and black. These need to be connected to the
station 12 Volt supply, or indeed any DC power supply in the range 6 to 16 Volts. Some transceivers have a
switched 12 Volt outlet for accessories. This would also be a good place to connect the meter supply. The
red wire must go to the positive and the black to negative. If a mistake is made, an internal series diode will
prevent damage to the meter. Note the negative supply is grounded in the meter.
RF connections
The SO239 co-ax socket marked “RF IN” should be connected to your transceiver or linear amplifier. This is
the input to the meter. The other SO239 socket marked “RF OUT” is the output of the meter and should be
connected to your antenna matching unit, which in turn is connected to the antenna. If there is no
matching unit, connect the antenna directly to the “RF OUT” SO239 socket.
