Vertex Standard VX-177 manual RF Squelch, Checking the Battery Voltage

ADVANCED OPERATION

RF SQUELCH

A special RF Squelch feature is provided on this radio. This feature allows you to set the squelch so that only signals exceeding a certain S-meter level will open the squelch.

To set up the RF squelch circuit for operation, use the following procedure:

1. Press the [F] key, then press the [0(SET)] key to enter the Set mode.

2. Rotate the DIAL knob to select Set Mode Item 34: RF SQL.

3. Press the [F] key momentarily to enable adjustment of this Item. 4. Rotate the DIAL knob to select the desired signal strength level

for the squelch threshold (S-1, S-2, S-3, S-4, S-5, S-6, S-8,

S-FULL, or OFF). 5. Press the PTT switch to save the new setting and return to nor-

mal operation.

CHECKING THE BATTERY VOLTAGE

The VX-177’s microprocessor includes programming which will measure the current bat- tery voltage.

1. Press the [F] key, then press the [0(SET)] key to enter the Set mode.

2. Rotate the DIAL knob to select Set Mode Item 12: DC VLT.

3. Press the [F] key momentarily to display the current DC voltage being supplied.

4. Press the [F] key, followed by the PTT switch to return to nor- mal operation.

18 VX-177 OPERATING MANUAL