Kenwood TM-255E - Manual (Page 26)

FM OPERATION
To receive, use the following procedure;
1 Select the desired frequency.
2 Select the FM mode by pressing [AUTO/FM].
• "FM" appears.
A VFO
u ZI n n n n n
\
FM
V____
1 Jf LI. LI
S 1 3 5 7 9 20
2 4 6 8
LI
40dB
10
LI. LI
J
3 Set the VOL control to a comfortable listening
level.
4 Select the type of squelch you want to use and
adjust as explained earlier {page 16}.
To transmit, proceed to the subsequent steps.
5 Listen. Make sure that your transmission won't
interfere with others.
Press and hold [PTT].
Speak into the microphone.
• As you transmit, verify that the RF meter is
reading upscale confirming transmit output
power.
• FM microphone gain adjustment is via Menu B,
No. 60. The default is Low (L). Normally, Low
is an appropriate selection for most
microphones. Select High if you receive reports
of weak audio.
U Zi n n n n n
1 Jf LI. LI LI LI. LI
lilllilllllllilllllllllllllill
• Speak in a normal tone of voice. The RF meter
will indicate a steady carrier, regardless of voice
peaks. Speaking too close to the microphone,
or too loudly may increase distortion and
reduce intelligibility. If operating through a
repeater, over deviation will cause your signal
to "talk-off" (break up) through the repeater.
8 Release [PTT] to receive again.
4 COMMUNICATION
FM REPEATER OPERATION
Compared to simplex communication, you can usually
transmit over much greater distances by using a
repeater. Repeaters are typically located on a
mountain top or other elevated location. Often they
operate at higher ERP (Effective Radiated Power)
than a typical base station. This combination of
elevation and high ERP allows communications over
considerable distances.
Repeaters are often installed and maintained by radio
clubs, sometimes with the cooperation of local
businesses from communications industries. During
natural emergencies, repeater networks can be a'
valuable aid to officials responsible for coordinating
communications in a community. This assistance may
help save lives.
TRANSMIT OFFSETS
All Amateur Radio voice repeaters use a separate
receive and transmit frequency. The transmit
frequency may be higher or lower than the receive
frequency but the difference in frequencies will be a
standard amount, or "standard split". Most repeater
configurations fall into one of the following categories:
Offset
OirectioR
TM-255A/E TM-455A I TM-455E
+ +600 kHz +5 MHz +1.6 MHz
- -600 kHz -5 MHz -1.6 MHz
-- N/A N/A -7.6 MHz
N/A : Not applicable
Whether using VFO mode. Memory Recall, or the Call
channel, the transmit offset direction can be changed.
■ Selecting Offset Direction
This function sets the transmit frequency either
higher (+) or lower (-) than the receive frequency
by a fixed amount.
Press [SHIFT].
• The default is "simplex" (no offset).
• The offset can only be activated when using FM
mode.
• Each press of [SHIFT] changes the offset as
follows:
No
indicator -»-+ No
indicator -►+
t_____
TM-255A/E, TM-455A . TM-455E
19