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Compared to simplex communication, you can usually
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transmit over much greater distances by using a repeater.
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Repeaters are typically located on a mountain top or other
elevated location. Often they operate at higher ERP
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(Effective Radiated Power) than a typical station. This
combination of elevation and high ERP allows
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communications over considerable distances.
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Repeaters are often installed and maintained by radio
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clubs, sometimes with the cooperation of local businesses
involved in the communications industry. During
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emergencies, repeater networks can be a valuable aid to
officials responsible for coordinating communications in a
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community.
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TX: 144.73 MHz
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TX tone: 88.5 Hz
RX: 145.33 MHz
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OPERATING THROUGH REPEATERS
TX: 144.73 MHz
TX tone: 88.5 Hz
RX: 145.33 MHz
REPEATER ACCESS
Most 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". You can set a separate receive and
transmit frequency by selecting the offset frequency and
offset direction with respect to the receive frequency.
In addition, some repeaters may require the transceiver to
transmit a tone before the repeater can be used. To
transmit this required tone, activate the Tone function and
select a tone frequency. The required tone frequency
depends on the repeater you are accessing.
Most repeater configurations fall into one of the following
categories:
Offset
TM-V7A/ E
Direction
VHF
+
+600 kHz
–
–600 kHz
N/A
– (" ")
N/A: Not applicable
TM-V7E
TM-V7A
UHF
UHF
+5 MHz
+1.6 MHz
–1.6 MHz
–5 MHz
–7.6 MHz
N/A
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