Kenwood TS-570D User Manual - Page 30

7 SPECIALIZED COMMUNICATING FM REPEATER OPERATION Most Amateur radio voice repeaters use a separate receive and transmit frequency. The transmit frequency may be higher or lower than the receive 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 repeaters operate only in the 29 MHz FM sub-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 meter FM provides reliable around-town communications with the potential for sudden DX from across the country or around the world. 29.520 MHz 88.5 Hz 29.620 MHz > 29.620 MHz 29.520 MHz 88.5 Hz 1 Press [A/B] to select VFO A or VFO B. • "tA" or "tB" appears to show which VFO is selected. 2 Select the operating frequency. • The frequency selected here will be used for transmitting. 3 Press [FM/AM] to select FM mode. • "FM" appears. 4 Press [A/B] to select the other VFO. • To copy the frequency that you select in step 2 to another VFO, press [A=B] before pressing [A/B]. 5 Select the operating frequency. • The frequency selected on this VFO will be used for receiving. 6 Press [FM/AM] to select FM mode. 7 Press [SPLIT]. • "SPLIT" appears. • Pressing [A/B] reverses the receive frequency and the transmit frequency. 8 Select the subtone frequency via Menu Nos. 18 and 19. • See "SELECTING SUBTONE FREQUENCY" and "CONTINUOUS OR BURST SUBTONES?" for more details on the subtone. 9 Press [AGC/TONE] to activate the Subtone function. • "T" appears. ARRL 10-METER BAND PLAN Frequency Range (kHz) Mode/Activity 28000~28070 28070~28150 28120~28189 28190~28300 28300~29300 (29000~29200) 29300~29510 29510~29590 29600 29610~29700 CW RTTY Packet Beacons Phone (AM) Satellite downlinks Repeater inputs 1 FM simplex calling Repeater outputs1 1 Repeater frequency pairs (input/output): 29520/29620, 29540/29640, 29560/29660, 29580/29680 • To quit the Subtone function, press [AGC/TONE] twice. 10 Press [SPLIT] to quit split-frequency operation. • "SPLIT" disappears. If you access Menu No. 07 and select ON, you can recall a memory channel to use for either receiving or transmitting. For more information, refer to "MemoryVFO Split Operation" {page 41} under "MEMORY FEATURES". The data that you select in steps 1 to 9 except for subtone duration can be stored in memory. Refer to "Split-Frequency Channels" {page 40}. 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 subtone frequency stored in a memory channel, recall the desired memory channel, and access Menu No. 18. 24