VX-7R O
PERATING
M
ANUAL
66
The Channel Counter allows measuring of the frequency of a nearby transmitter, without
knowing that frequency in advance. The frequency can be measured by bringing the
VX-
7R
close to the transceiver which is transmitting.
The
VX-7R
performs a high-speed search within a ±5 MHz range from the frequency
displayed on the LCD. When the strongest signal in that range is identified, the
VX-7R
displays the frequency of that (strongest) signal, and writes it into the special “Channel
Counter” memory.
Note
: This Channel Counter is designed to provide an
indication
of the operating fre-
quency of the incoming signal, one that is close enough to allow the user to tune precisely
to the other station’s frequency. This feature is not, however, designed to provide a precise
determination of the other station’s frequency.
The Channel Counter feature can only be activated while the
VX-7R
is operat-
ing in the Mono band mode.
1.
Set the radio to the VFO mode in the predicted frequency range for the transmitter to
be measured with the “Mono” band mode engaged.
2.
Bring the
VX-7R
into close proximity to the transmitter to be measured.
3.
Press the
key, then press the
key to activate the
Channel Counter; the frequency of the nearby station will
be displayed. When the channel counter is active, a 50 dB
receiver front-end attenuator will be engaged. Therefore,
only stations in close proximity may have their frequen-
cies measured using this feature.
4.
If it isn’t possible to determine the signal’s frequency, the
transceiver will return to the frequency on which you were
operating when you started Channel Counter operation.
5.
When you are finished, press the
key, then press the
key. The radio will exit
from Channel Counter operation.
Setting the Channel Counter Sweep Width
You may change the bandwidth of the Channel Counter. Available selections are ±5, ±10,
±50, and ±100 MHz (default: ±5 MHz).
Here is the procedure for setting the Channel Counter Bandwidth:
1.
Press the
key, then press the
key to enter the Set mode.
2.
Rotate the
DIAL
to select the Menu Item labeled (
Scan
Modes #1: CH COUNTER
).
3.
Press the
or
key to select the desired bandwidth.
4.
When you have made your selection, press the
PTT
to
save the new setting and exit to normal operation.
C
HANNEL
C
OUNTER
O
PERATION
