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Yaesu Mark-V FT-1000MP Operating Manual: Split Frequency Operation

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Typical split operation involves receiving on the Main
VFO-A or a memory channel, and transmitting on the
Sub VFO-B. The special case of FM repeater opera-
tion uses some features of its own, and is described
on page 59.
Rare DX stations often announce that they will "lis-
ten up" or "listen down" a few kHz (from their Tx fre-
quency) when calling CQ or during contests to avoid
being covered by the DX pileup from responding sta-
To activate Split operation, press the ( TX ) Button/
LED above the Sub VFO's tuning knob. "SPLIT" will
appear at the left of the display, and the red TX LED
above the Sub VFO tuning knob will light up. Split op-
eration can be activated with or without dual reception;
however, we recommend that you have dual receive
on, to allow you to monitor your transmit frequency on
the Sub VFO (while receiving), as well as the Main
VFO receiving frequency, so you don't accidentally "step
on" somebody.
A few button functions you will need to know for
split operation are explained below.
SUB VFO-B ( TX ) Button/LED - Pressing this but-
ton activates the Sub VFO for transmission.
[ A
B ] - Pressing this key copies the displayed con-
tents of the Main VFO into the Sub VFO, overwriting
its previous contents.
u t
[ A
B ] - Pressing this key switches "trades" the dis-
played contents of the Main and Sub VFOs.
page 62
Split Operation Mode
The MARK-V FT-1000MP offers three modes of
Split operation (chosen by menu selection 8-2 ):
Normal - In this default configuration, pressing SUB
VFO-B ( TX ) Button/LED activates Sub VFO-B for
transmission. Other settings (such as mode and fre-
quency) must be manually set for the Sub VFO.
Auto - When SUB VFO-B ( TX ) Button/LED is
pressed, Sub VFO-B is enabled for transmit, and the
selected operating mode from Main VFO-A is automati-
cally copied into Sub VFO-B. The transmission fre-
quency must still be manually set for the Sub VFO.
A=B - Same as Auto mode above, however, a pre-
set frequency offset (known as a "Quick Split") is also
applied to Sub VFO-B for transmission.
The "Quick Split" feature is handy when you know
the offset a DX station will be listening on beforehand.
The offset is applied instantly, saving time and mental
arithmetic. It also ensures that you will not be transmit-
ting on the DX station's TX frequency! A Quick Split
offset up to ±100 kHz can be selected in menu selec-
tion 1-6.
SUB VFO-B Settings
S-Meter - You can enable or disable the S-meter
for the sub receiver via menu selection 3-6.
Peak-Hold - Additionally, if you want the "peak-hold"
meter function (see page 41) for the Sub Receiver
S-meter, it can be turned on/off by menu selection
Tuning Steps - The Sub VFO's step size (0.625 ~
20 Hz) is selected in menu selection 1-4 .
Sub Receiver AGC - The AGC recovery time con-
stant can be switched from automatic (default) to
either fast or slow using menu selection 8-7 .
Filters - When installed, the optional 500-Hz IF fil-
ter can be selected from the front-panel via menu
selection 5-8 .
Lastly, if you want to disable SUB VFO-B opera-
tion entirely, it can be turned off from menu selec-
tion 7-8 (the display still appears and the SUB VFO-
B knob can be turned, but nothing is received).
While disabled, the sub receiver can be activated
as a separate transmit VFO for split operation by
pressing the SUB VFO-B ( TX ) Button/LED.
MARK-V FT-1000MP Operating Manual


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