Vertex Standard VX-8R - Manual (Page 100)

VX-8R O
PERATING
M
ANUAL
98
C
HANNEL
C
OUNTER
O
PERATION
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-
8R close to the transceiver which is transmitting.
The VX-8R 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-8R
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-8R is operat-
ing in the “A-Band”.
1. Set the “A-Band” to the VFO mode in the predicted frequency range for the transmit-
ter to be measured, then set the “A-Band” to the “Operating” band (indicated in large
characters).
2. Bring the VX-8R into close proximity to the transmitter to be measured.
3. Rotate the DIAL knob, while pressing and holding in the
key, to select the “CH COUNTER CH COUNTER CH COUNTER CH COUNTER CH COUNTER ” mode.
4. Release the key to begin the Channel Counter; the fre-
quency of the nearby station will be displayed. When the
channel counter is active, a 50 dB receiver front-end at-
tenuator will be engaged. Therefore, only stations in close
proximity may have their frequencies measured using this
feature.
5. If it isn’t possible to determine the signal’s frequency, the
“- - - NO - - - - - - NO - - - - - - NO - - - - - - NO - - - - - - NO - - - ” notation appears for two seconds, then the
transceiver will return to the frequency on which you were
operating when you started Channel Counter operation.
6. When you are finished, press the key. The radio will exit from Channel Counter
operation.