Antenna Consideration; About Coaxial Cable; Mobile Installation - Yaesu FT-2980E Operating Manual

Installation

Antenna Consideration

The FT-2980R/E is designed for 50 Ohm resistive impedance at the amateur operating
frequencies.
The antenna (or a 50 Ohm dummy load) should be connected whenever the transceiver is
turned on, to avoid damage that could otherwise result if transmission occurs accidentally
without an antenna.
Ensure that your antenna is designed to handle 80 Watts of transmitter power. Some
magnetic-mount mobile antennas, designed for use with hand-held transceivers, may
not be capable of withstanding this power level. Consult the antenna manufacturer's
specification sheet for details.
Construct the antenna and coaxial cable, to maintain the impedance presented to the FT-
2980R/E antenna connector for an SWR of 1.5 or less. Careful preparation of the antenna
will permit maximum performance and protect the transceiver from damage. High voltages
may be present on the antenna; install it so it will not be easily touched when in operation.

About coaxial cable

Use high-quality 50-Ohm coaxial cable for the lead-in to your FT-2980R/E transceiver.

Mobile Installation

The FT-2980R/E must only be installed in vehicles having a 13.8 Volt negative ground
electrical system. Mount the transceiver where the display, controls, and microphone are
easily accessible, using the supplied MMB-83 mounting bracket.
The transceiver may be installed in almost any location, but should not be positioned
near a heating vent nor anywhere where it might interfere with driving (either visually or
mechanically). Make sure to provide plenty of space on all sides of the transceiver so
that air can flow freely around the radio's case. Refer to the diagrams showing proper
installation procedures.
10 FT-2980R/E Operating Manual