Enhanced Communications

SPLIT-FREQUENCY OPERATION

Usually you can communicate with other stations using a single frequency for receiving and transmitting. In this case, you select only one frequency on either VFO A or VFO B. However, there are cases where you must select one frequency for receiving and a different frequency for transmitting. This requires the use of two VFOs. This is referred to as “split-frequency operation”. One typical case which requires this type of operation is when you use an FM repeater {page 32}. Another typical case is when you call a rare DX station.

When a rare or desirable DX station is heard, that operator may immediately get many simultaneous responses. Often, such a station is lost under the noise and confusion of many calling stations. If you find that you are suddenly being called by many operators, it is your responsibility to control the situation. You may announce that you will be “listening up 5 (kHz, from your present transmit frequency)”, or “listening down between 5 and 10 (kHz)”.

1Press [MAIN], [A/B] to select VFO A or VFO B on the main transceiver.

•“tA” or “tB” appears to show which VFO is selected.

2Select an operating frequency.

•The frequency selected at this point will be used for transmitting.

•To copy the selected VFO frequency to the other VFO, press [A=B].

3Press [A/B] to select the other VFO.

4Select an operating frequency.

•The frequency selected on this VFO will be used for receiving.

5Press [SPLIT].

•“SPLIT” appears.

•Each press of [A/B] reverses the receive and transmit frequencies.

6To quit split-frequency operation, press [SPLIT] again.

•“SPLIT” disappears.

If you access Menu No. 06A and select “ON”, you can recall a memory channel to use for either receiving or transmitting. For more information, refer to “Memory- VFO Split Operation” {page 60} under “MEMORY FEATURES”.

Note: You cannot perform SPLIT operation on the sub-receiver; it has only one VFO.

TF-SET (TRANSMIT FREQUENCY SET)

TF-SET allows you to temporarily switch your transmit frequency and receive frequency. Canceling this function immediately restores the original transmit and receive frequencies. By activating TF-SET, you can listen on your transmit frequency, and change it while listening. This allows you to check whether or not the newly selected transmit frequency is free of interference.

1Configure split-frequency operation as explained in the previous section.

2Press and hold [TF-SET].

3While holding down [TF-SET], change the operating frequency by turning the Tuning control or by pressing Mic [UP]/ [DWN].

•The transceiver receives on the frequency that you select, but the frequency shown on the sub-display stays unchanged.

4Release [TF-SET].

•You are now receiving again on your original receive frequency.

Successfully contacting a DX station in a pileup often depends on making a well-timed call on a clear frequency. That is, it is important to select a relatively clear transmit frequency and to transmit at the exact instant when the DX station is listening but the majority of the group aren’t transmitting. Switch your receive and transmit frequencies by using TF-SET and listen. You will soon learn the rhythm of the DX station and the pileup. The more proficient you become at using this function, the more DX stations you will contact.

Note:

◆If you press [FUNC], [ATT/ F LOCK] to lock the operating frequency before using TF-SET, pressing an incorrect button by mistake retains the original receive frequency.

◆TF-SET is disabled while transmitting.

◆If you have recalled a memory channel (excluding CH 290 to 299), you cannot change the recalled frequency using the Tuning control.

◆To enable the Tuning control, access Menu No. 06B and select “ON”. Pressing Mic [UP]/ [DWN] after recalling a memory channel changes the memory channels.

◆An RIT frequency shift is not added; however, an XIT frequency shift is added to the transmit frequency.