Operation Manual

OM-E 2072-09287-00
3-21
3-7.2.1 VFO Operation
VFO (Variable Frequency Offset) is a feature available in the Simplex mode, that enables you to
operate the transceiver simultaneously on two different channels, designated A and B.
• Using the A/B function, you can “freeze” the frequency of channel A, switch to channel B and
then return to channel A again.
• Using the A=B option, you can copy the frequency of the current channel to another channel.
To operate the VFO function:
1. If you are not in the Frequency mode, enter the Frequency mode
and verify that the frequency type is Simplex: MENU > FREQ
(F2) > SMPX (F1) > ENTER.
For more information, see page 3-20.
2. Select the required frequency and press ENTER to confirm your
choice.
T/R
BAND
SQ
DSP
FREQ
F 15,000.00
I
USB
IATU
AGC
3. Press MORE until the A/B function appears next to the F1 function
key.
A/B
<--
-->
FREQ
F 15,000.00
I
USB
IATU
AGC
4. Press A/B (F1) to select the A/B mode.
The A=B function appears next to the F2 function key’ together
with the first frequency (frequency A).
A/B
A=B
<--
-->
FRQ-A
F 15,000.00
I
USB
IATU
AGC
5. Press A/B (F1) to alternate between the two frequencies.
A/B
A=B
<--
-->
FRQ-B
F 14,000.00
I
USB
IATU
AGC
6. Press A=B (F2) to copy the frequency of the displayed channel to the alternate channel.
7. You can adjust the frequency of either A or B at any time, using the following methods:
• Press < − −
< − −< − −
< − − (F3) and − − >
− − >− − >
− − > (F4) to move the cursor backwards and forwards, depending on
the digit you wish to change, and then type the desired digit on the keypad.
• When < − −
< − −< − −
< − − (F3) and − − >
− − >− − >
− − > (F4) are used in conjunction with the UP/DOWN scroll keys,
the frequency digit scrolls according to the location of the cursor.
For instance, if the current frequency is 15,400.54 and the
cursor is at the 100 kHz location (15,_00.54), pressing the
UP/DOWN scroll key will scroll the 100 kHz digit to
1,500.54; 15,600.54; 15,700.54 and so on.
A/B
<--
-->
FREQ
F 15,_00.54
I
USB
IATU
AGC
To return to the regular Frequency mode:
1. Press MORE until the T/R function appears next to the F1 function key.
2. Press T/R (F1) to select the regular mode.