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Change the RF Signal Generator to 174.000 MHz. The output level keeps –8 dBμV (with a
standard FM modulation: ±1.5 kHz deviation @ 1 kHz).
Press the [H/L] key to read the Squelch Threshold level, then press and hold the [H/L] key
for 2 seconds to save the Squelch Threshold level at the high band edge.
Press the [ ] key twice to change the "H" character to "L" at the lower right corner of the
display.
Change the RF Signal Generator to 134.000 MHz. The output level keeps –8 dBμV (with a
standard FM modulation: ±1.5 kHz deviation @ 1 kHz).
Press and hold the [H/L] key for 2 seconds to read the Squelch Threshold level at the low
band edge.
Press the [CLR] key to exit from this alignment item.
Squelch Tight Adjustment (Wide Bandwidth)
Press the [ ] or [ ] key to select the display to "N TI W".
Press the [SQL] key to enable adjustment of the Squelch Tight level.
Press the [ ] or [ ] key to select a small character of lower right corner of the display to
"C".
Set the RF Signal Generator output level 0 dBμV (with a standard FM modulation: ±3.0 kHz
deviation @ 1 kHz) at 156.800 MHz
Press the [H/L] key to read the Squelch Tight level, then press and hold the [H/L] key for 2
seconds to save the Squelch Tight level at the band center.
Press the [ ] key to change the "C" character to "H" at the lower right corner of the
display.
Change the RF Signal Generator to 174.000 MHz. The output level keeps 0 dBμV (with a
standard FM modulation: ±3.0 kHz deviation @ 1 kHz).
Press the [H/L] key to read the Squelch Tight level, then press and hold the [H/L] key for 2
seconds to save the Squelch Tight level at the high band edge.
Press the [ ] key twice to change the "H" character to "L" at the lower right corner of the
display.
Change the RF Signal Generator to 134.000 MHz. The output level keeps 0 dBμV (with a
standard FM modulation: ±3.0 kHz deviation @ 1 kHz).
Press the [H/L] key to read the Squelch Tight level, then press and hold the [H/L] key for 2
seconds to save the Squelch Tight level at the low band edge.
Press the [CLR] key to exit from this alignment item.
Squelch Tight Adjustment (Narrow Bandwidth)
Press the [ ] or [ ] key to select the display to "N TI N".
Press the [SQL] key to enable adjustment of the Squelch Tight level.
Press the [ ] or [ ] key to select a small character of lower right corner of the display to
"C".
Set the RF Signal Generator output level 0 dBμV (with a standard FM modulation: ±1.5 kHz
deviation @ 1 kHz) at 156.800 MHz
Press the [H/L] key to read the Squelch Tight level, then press and hold the [H/L] key for 2
seconds to save the Squelch Tight level at the band center.
Press the [ ] key to change the "C" character to "H" at the lower right corner of the
display.
Change the RF Signal Generator to 174.000 MHz. The output level keeps 0 dBμV (with a
standard FM modulation: ±1.5 kHz deviation @ 1 kHz).
4
Vertex Standard Co.,Ltd.
FCC ID:K6630393X20
IC: 511B-30393X20
Alignment
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