Icom IC-7300 Instruction Manual basic - Page 47

FM repeater operation

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4 RECEIVING AND TRANSMITTING FM repeater operation A repeater receives your radio's signals and simultaneously retransmits them on a different frequency to provide a greater communication range. When using a repeater, the transmit frequency shifts from the receive frequency by an offset amount. You can access a repeater using the split function. 1. Select the desired operating band. (p. 3-2) (Example: 28 MHz band) 2. Rotate MAIN DIAL to set the operating frequency. (Example: 29.650.00 MHz) 3. Select the FM mode. 4. Hold down SPLIT for 1 second. ••Turns the Split function ON. ••Turns the Tone function ON and "TONE" is displayed. ••Displays the transmit frequency. Repeater Tone ON Split function ON Transmit frequency LYou can set the frequency offset for the HF band. (p. 8-3) MENU » SET > Function > SPLIT > FM SPLIT Offset (HF) LYou can set the frequency offset for the 50 MHz band. (p. 8-3) MENU » SET > Function > SPLIT > FM SPLIT Offset (50M) DDSetting the repeater tone frequency Some repeaters require a subaudible tone to be 1 accessed. Subaudible tones are superimposed on your signal, and must be set in advance. 2 Do the following steps to set the tone frequency. 3 1. Select the FM mode. 2. Push FUNCTION . 4 ••Opens the FUNCTION screen. 3. Touch [TONE] for 1 second. 5 6 7 8 FUNCTION screen (FM mode) ••Opens the TONE FREQUENCY screen. 4. Rotate MAIN DIAL to select the desired subaudible tone frequency. Touch for 1 second to reset to the default. TONE FREQUENCY screen ••Selectable tone frequencies 67.0 88.5 114.8 151.4 177.3 69.3 91.5 118.8 156.7 179.9 71.9 94.8 123.0 159.8 183.5 74.4 97.4 127.3 162.2 186.2 77.0 100.0 131.8 165.5 189.9 79.7 103.5 136.5 167.9 192.8 82.5 107.2 141.3 171.3 196.6 85.4 110.9 146.2 173.8 199.5 203.5 206.5 210.7 218.1 225.7 229.1 233.6 241.8 250.3 254.1 9 10 11 12 13 14 15 16 17 18 Checking the repeater tone frequency 19 You can check the tone frequency by receiving the repeater's input frequency and tone scanning. To 20 receive the input signals, the transceiver detects the subaudible tone frequency using the tone scan function. 21 1. Touch [T-SCAN]. ••The scan starts, and then stops when the matching tone frequency as the repeater is received. Blinks while scanning 2. To close the TONE FREQUENCY screen, push EXIT . 4-17

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4
RECEIVING AND TRANSMITTING
1
2
3
4
5
6
7
8
9
10
11
12
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18
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20
21
4-17
FM repeater operation
A repeater receives your radio’s signals and
simultaneously retransmits them on a different
frequency to provide a greater communication range.
When using a repeater, the transmit frequency shifts
from the receive frequency by an offset amount. You
can access a repeater using the split function.
1.
Select the desired operating band. (p. 3-2)
(Example: 28 MHz band)
2. Rotate
MAIN DIAL
to set the operating frequency.
(Example: 29.650.00 MHz)
3. Select the FM mode.
4. Hold down
SPLIT
for 1 second.
• Turns the Split function ON.
• Turns the Tone function ON and “TONE” is displayed.
• Displays the transmit frequency.
Repeater Tone ON
Transmit frequency
Split function ON
L
You can set the frequency offset for the HF band.
(p. 8-3)
MENU
»
SET > Function > SPLIT >
FM SPLIT Offset (HF)
L
You can set the frequency offset for the 50 MHz band.
(p. 8-3)
MENU
»
SET > Function > SPLIT >
FM SPLIT Offset (50M)
D
Setting the repeater tone frequency
Some repeaters require a subaudible tone to be
accessed. Subaudible tones are superimposed on
your signal, and must be set in advance.
Do the following steps to set the tone frequency.
1.
Select the FM mode.
2. Push
FUNCTION
.
• Opens the FUNCTION screen.
3.
Touch [TONE] for 1 second.
FUNCTION screen (FM mode)
• Opens the TONE FREQUENCY screen.
4. Rotate
MAIN DIAL
to select the desired subaudible
tone frequency.
TONE FREQUENCY screen
Touch for 1
second to
reset to the
default.
•
Selectable tone frequencies
67.0
88.5
114.8
151.4
177.3
203.5
250.3
69.3
91.5
118.8
156.7
179.9
206.5
254.1
71.9
94.8
123.0
159.8
183.5
210.7
74.4
97.4
127.3
162.2
186.2
218.1
77.0
100.0
131.8
165.5
189.9
225.7
79.7
103.5
136.5
167.9
192.8
229.1
82.5
107.2
141.3
171.3
196.6
233.6
85.4
110.9
146.2
173.8
199.5
241.8
Checking the repeater tone frequency
You can check the tone frequency by receiving the
repeater’s input frequency and tone scanning. To
receive the input signals, the transceiver detects
the subaudible tone frequency using the tone scan
function.
1. Touch [T-SCAN].
• The scan starts, and then stops when the matching
tone frequency as the repeater is received.
Blinks
while
scanning
2.
To close the TONE FREQUENCY screen, push
EXIT
.