Yaesu VX-170, Manual, Page: 20 / 88

VX-170 O
PERATING
M
ANUAL
18
A
DVANCED
O
PERATION
RF S
QUELCH
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 RF SQL
RF SQL RF SQL 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-1 S-1 S-1 S-1 , S-2 S-2 S-2 S-2 S-2 , S-3 S-3 S-3 S-3 S-3 , S-4 S-4 S-4 S-4 S-4 , S-5 S-5 S-5 S-5 S-5 , S-6 S-6 S-6 S-6 S-6 , S-8 S-8 S-8 S-8 S-8 ,
S-FULL S-FULL S-FULL S-FULL S-FULL , or OFF OFF OFF OFF OFF ).
5. Press the PTT switch to save the new setting and return to nor-
mal operation.
C
HECKING THE
B
ATTERY
V
OLTAGE
The VX-170 ’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 DC VLT DC VLT DC VLT 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.