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MB-R-OM-03/11
The coaxial cable should be terminated at the radio end by an “N” type connector.
The connector should be installed by a person skilled in this operation. This
connector plugs into the mating connector (type “N”) on the rear of the MB-R. Be
sure to turn the ring with the internal threads CW until the connection is firmly made.
At the antenna end, if there is no similar connector, any unshielded center lead
should be no longer than 2 inches (5 cm.) A suitable adapter is required if a different
style antenna coax cable connector is used.
A number of acceptable microphone choices exist. Whether a handheld aircraft style
or a table or desk “dispatchers” style, a transistorized dynamic microphone element
is much preferred over the older carbon type elements that have poorer performance
and shorter lives. Many readily available microphones, such as a “condenser”, un-
amplified dynamic and ceramic types, will not work with the Model MB-R. The
microphone plug must be of the 3/16 inch diameter, 2-circuit type, as commonly used
in aircraft. The microphone plug should be inserted completely and firmly into the
microphone jack at the bottom right of the front panel.
If the Model MB-R will be operated remotely, refer to the MB-R assembly instructions
section.
