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FCC ID: K66VX-5500L
Alignment
Select band center frequency channel, with 151.4 Hz CTCSS encode, and reduce the AF generator
injection to zero.
Key the transmitter and adjust by control commands for CTCSS deviation from the computer for 0.7 kHz ±
0.1 kHz deviation as indicated on the deviation meter.
DCS Modulation Level
Select band center frequency channel, with DCS 023 enabled, reduce the AF generator injection to zero.
Key the transmitter and adjust by control commands for DCS deviation from the computer for 0.7 kHz ±
0.1 kHz deviation as indicated on the deviation meter.
Receiver
Set up the test equipment as shown for receiver alignment, and construct the audio test adapter as
described in the box below.
With the transceiver set to band center frequency channel, and the RF signal generator tuned to the same
frequency, set the generator for ±3.0 kHz deviation (for 25 kHz steps) with 1kHz tone modulation, and
set the output level for 1 µV at the antenna jack.
Adjust by control commands for tune from the computer for optimum SINAD, reducing signal generator
output level as necessary for proper meter deflection.
After the previous step, final signal generator level should be less than 0.25 µV for 12 dB SINAD.
Squelch Threshold
Select band center frequency channel, and the RF signal generator turned to the same frequency, set the
generator for ±3.0 kHz deviation with 1 kHz tone modulation, and set the output level for -8 dBµ at the
antenna jack.
Adjust the squelch threshold level by control commands for squelch threshold from the computer so that it
just closes (BUSY LED turns off).
4/4
Vertex Standard Co., Ltd.
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