Kenwood TM-V7E User Manual - Page 28
Operating Through Repeaters
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OPERATING THROUGH REPEATERS 1 2 Compared to simplex communication, you can usually transmit over much greater distances by using a repeater. 3 Repeaters are typically located on a mountain top or other elevated location. Often they operate at higher ERP 4 (Effective Radiated Power) than a typical station. This 5 combination of elevation and high ERP allows communications over considerable distances. 6 Repeaters are often installed and maintained by radio 7 clubs, sometimes with the cooperation of local businesses 8 involved in the communications industry. During emergencies, repeater networks can be a valuable aid to 9 officials responsible for coordinating communications in a community. 10 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. 11 12 13 14 15 16 17 TX: 144.73 MHz TX tone: 88.5 Hz 18 RX: 145.33 MHz Most repeater configurations fall into one of the following categories: Offset Direction + - - (" ") TM-V7A/ E VHF +600 kHz -600 kHz N/A TM-V7A UHF +5 MHz -5 MHz N/A TM-V7E UHF +1.6 MHz -1.6 MHz -7.6 MHz N/A: Not applicable 19 20 21 22 TX: 144.73 MHz TX tone: 88.5 Hz RX: 145.33 MHz