Kenwood TS-480HX Operation Manual - Page 39

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. 29.520 MHz 88.5 Hz 29.620 MHz 29.620 MHz 29.520 MHz 88.5 Hz 7 ENHANCED COMMUNICATIONS 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). 31