1 digital multimeter (dmm), 2 rf power meter, 3 antenna analyzer – Campbell Scientific RF320-Series Ritron VHF/UHF Radios User Manual
Page 23: Digital multimeter (dmm), Rf power meter, Antenna analyzer
RF320-Series Ritron VHF/UHF Radios
8.1.1.1 Digital Multimeter (DMM)
For verifying supply voltages, current drain, and the continuity of cables and
interconnect wiring, an inexpensive (a high level of accuracy is not required)
DMM is essential. Some representative equipment and manufacturers are listed
below.
Fluke Corporation
TENMA
8.1.1.2 RF Power Meter
Portable RF power meters or wattmeters are required to verify that the radio is
producing the specified RF output power. One that can be connected in-line
between the radio and the transmission line, and that can measure both forward
and reflected energy is most useful. In lieu of an SWR meter, VSWR can be
calculated from the forward and reflected power measurements.
One of the most economical and widely used RF wattmeters is the Bird
Thruline Model 43.
Bird Technologies
th
or 5E plug-in element
8.1.1.3 Antenna Analyzer
In order for the radio to function properly, the connected transmission line and
antenna must be in good working order and providing the proper load to the
radio. An antenna analyzer is used to verify transmission line and antenna
parameters such as SWR, impedance, return loss, cable loss, and in some cases,
distance to fault (DTF). Some representative equipment and manufacturers are
listed below.
AEA Technology, Inc.
MFJ Enterprises, Inc.
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