Split Frequency Operation - Vertex Standard FT-857 Operating Manual

Split Frequency Operation

This transceiver provides convenient split-frequency operation, using the VFO-A and VFO-B, for DX working and other
operating situations requiring unique split frequency pairs.
The example below will describe a typical split-frequency DX situation on the 20-meter band, with a DX station
transmitting on 14.025 MHz, listening 10 kHz higher in the band.
1. Set VFO-A to 14.035.00 MHz CW (DX station's listening frequency).
2. Press the [F] key momentarily, then rotate the MEM/VFO CH knob, as needed, until Multi Function Row "a" [A/B,
A=B, SPL] appears on the display.
3. Press the [A](A/B) key momentarily to select VFO-B.
4. Tune the VFO-B frequency to 14.025.00 MHz (DX station's transmitting frequency).
5. Press the [C](SPL) key momentarily. The transceiver will now transmit using the VFO-A frequency, and will receive
using the VFO-B frequency.
"Parentheses" will appear on the both sides of the "SPL" indication, and the "SPL" icon will appear at the upper left
corner of the display.
6. To listen to the pile-up calling the DX station (so as to align your frequency more closely to that of the station being
worked by the DX), press the [A](A/B) key to reverse the VFOs. You will now be tuning in the vicinity of 14.035
MHz, and you can zero in on the DX station's listening frequency by tuning in on the station in QSO with the DX.
Press the [A](A/B) key again to return to reception on the DX station's frequency.
7. Press the [C](SPL) key once more to cancel split operation; the "Parentheses" and "SPL" icon will disappear from the
display.
The optional ATAS-100/-120 Active-Tuning Antenna System provides operation on a number of HF bands (7/14/21/28
MHz) plus 50 MHz, 144 MHz, and 430 MHz. The FT-857 provides microprocessor control of the tuning mechanism in
the ATAS-100/-120 for convenient automatic tuning.
Before operation can begin, you must instruct the FT-857's microprocessor that the ATAS-100/-120 is being used. This is
done using the Menu Mode:
1. Press and hold in the [F] key for one second to activate the Menu mode.
2. Rotate the MEM/VFO CH knob to recall Menu Mode N0-085 [TUNER/ATAS]. The default setting for this Menu is
"OFF." Rotate the DIAL to change the setting to "ATAS (ALL)," if you are using the ATAS-100/-120 for all bands
(you must connect an external diplexer to combine the two antenna ports so as to use the ATAS-100/-120 on all
bands). Or make the setting "ATAS (HF&50)," if you are using the ATAS-100/-120 on 7 ~ 50 MHz, with a dual-band
VHF/UHF antenna connected separately to the 144/430 MHz antenna port. If you are just using the ATAS-100/-120
on the HF bands only, with a dual-band VHF/UHF antenna connected separately to the 144/430 MHz antenna port (no
Active-Tuning Antenna System (ATAS-100/-120) Operation
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FCC ID: K66FT-857
Operating Manual
Vertex Standard Co., Ltd.