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7 ENHANCED COMMUNICATIONS
FM REPEATER OPERATION
Most Amateur radio voice repeaters use a separate
reception and transmission frequency. The
transmission frequency may be higher or lower than
the reception frequency. In addition, some repeaters
may require the transceiver to transmit a subtone
before the repeater can be used.
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 station. This combination of elevation
and high ERP allows communications over
considerable distances.
HF/ 6 m band repeaters operate usually in the
29 MHz FM sub-band and 51-54 MHz band. This
special service combines the advantages of FM
operation, good fidelity with noise and interference
immunity, with the excitement of HF DX (long
distance) communications. Even on a quiet day,
10 m FM provides reliable around-town
communications with the potential for sudden DX
from across the country or around the world.
Note:
◆
When programming 2 separate frequencies using 2 VFOs, be
sure to select FM mode on both VFOs.
◆
When operating through a repeater, over deviation caused by
speaking too loudly into the microphone can cause your signal to
“talk-off” (break up) through the repeater.
1 Press [A/B / M/V] to select VFO A or VFO B.
•“tA” or “tB” appears to show which VFO is
selected.
2 Turn the Tuning control or MULTI control to select
the reception frequency.
3 Press [MODE] to select FM mode {page 19}.
4 Press [A=B/ SPLIT] to duplicate the frequencies
and other data to the other VFO.
5 Turn the Tuning control or MULTI control to select
the transmission frequency.
• The frequency selected on this VFO will be
used for transmission.
6 Press [NB/T/ 7] to turn the Tone function ON if the
repeater requires a subtone.
• “T” appears.
• Refer to “Selecting a Tone Frequency” for
more details on the subtone {page 32}.
•To quit the Subtone function, press [NB/T/ 7]
twice.
7 Press [A=B/ SPLIT] (1 s).
•“ ” appears.
8 Press [A/B / M/V] to go back to the original
reception frequency.
9 Press Mic [PTT] to transmit.
• The VFO changes to the other VFO to transmit.
• Each time you press [A/B / M/V], the reception
and the transmission frequency are swapped.
10 Press [A=B/ SPLIT] (1 s) to quit split-frequency
operation.
•“ ” disappears.
The data that you select in steps 1 to 8 can be stored
in memory. Refer to “Split-Frequency Channels”
{page 51}.
Note:
◆
When operating through a repeater, over deviation caused by
speaking too loudly into the microphone can cause your signal
to “talk-off” (break up) through the repeater.
◆
To check the tone frequency stored in a memory channel,
recall the desired memory channel, and press
[NB/T/ 7] (1 s)
.
29.520 MHz
88.5 Hz
29.520 MHz
88.5 Hz
29.620 MHz
29.620 MHz