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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 usually operate 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:
X When programming 2 separate frequencies using 2 VFOs,
be sure to select FM mode on both VFOs.
X 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.
29.520 MHz
88.5 Hz
29.520 MHz
88.5 Hz
29.620 MHz
29.620 MHz
1 Press [A/B (A=B)] to select VFO A or VFO B.
•“
” or “ ” appears to show which VFO is
selected.
2 Turn the Tuning control or the MULTI/CH control
to select the reception frequency.
3 Press [FM/AM (FM-N)] to select FM mode.
4 Press and hold [A/B (A=B)] to duplicate the
frequencies and other data to the other VFO.
5 Turn the Tuning control or the MULTI/CH control
to select the transmission frequency.
6 Press [AGC/T (SEL] to turn the Tone function ON
if the repeater requires a subtone.
•“
” appears.
• Refer to “Selecting a Tone Frequency” for more
details on the subtone {page 26}.
• To quit the Subtone function, press [AGC/T (SEL)]
twice.
7 Press [SPLIT].
•“
” appears.
8 Press [A/B (A=B)] to return 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 (A=B)], the reception
and transmission frequencies are swapped.
10 Press [SPLIT] 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 41}.
Note:
X 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.
X To check the tone frequency stored in a memory channel,
recall the desired memory channel and press [AGC/T
(SEL)].
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In general, FM repeaters require the transceiver to
transmit a sub-audible tone to prevent other repeaters
on the same frequency from locking each other up.
The required tone frequency differs among repeaters.
Repeaters also differ in their requirements for either
continuous or burst tones. For the appropriate
selections for your accessible repeaters, consult your
local repeater reference.
After completing the tone settings, pressing and
holding Mic [PTT] causes the transceiver to transmit
the selected tone. If you have selected a 1750 Hz
tone, the transceiver sends a 500 ms tone burst each
time transmission starts.
Note: If you store tone settings in a memory channel, you need
not reprogram each time. Refer to “MEMORY FEATURES”
{page 41}.