Antenna Considerations - Yaesu FT-51R Owner's Manual

Spea kerfMicrop hones
A Speaker/Mic can increase operating con-
venience and extend communications range.
Each is equipped with a dual plug connector
which mates with the
EAR
top panel of the transceiver, disabling the inter-
nal speaker and microphone. The cable lets you
clip the transceiver to your belt, or hold it above
obstructions for better performance. Also, using
a Speaker/Mic for mobile operation allows the
transceiver to be left in the PA-1OA Mobile
Power Adapter /Mount.
Hold the Speaker/Mic near your ear during
reception; or connect an earphone to the plug on
the Speaker/Mic, attenuating the audio from its
loudspeaker. To transmit just hold the
switch on the microphone.
Remote Control Micro-
phone
The MH-29~2~3 is a scanning hand loud-
tion key and its own display. A lamp switch
and jacks on the
turns on backlight illumination for easy viewing
in the dark. Transceiver volume level can also be
adjusted by holding the CALL key on the MH-
then pressing the
VC-22 VOX Headset
with Boom Microphone
The VC-22 connects to the
in the same manner as the speaker/mics. It con-
sists of a headband-supported earphone and at-
tached boom microphone, allowing hands-free
VOX operation with the transceiver.

Antenna Considerations

While the supplied rubber flex antenna is
convenient for short-range operation, the stand-
ard BNC jack allows use of a higher gain antenna
to extend range in base or mobile operation. Any
antenna used with the FT-51R should have an
50
impedance close to
amateur bands. If a feedline is used, it should be
good quality 5042 coax. Obtaining a proper fit
with some BNC plugs may require removing :he
rubber gasket around the antenna jack on the
transceiver.
buttons.
and jacks
EAR
MIC
ohms on the 2-m 70-cm
&