Receiver Alignment - Vertex Standard VX-1700 Alignment Manual

Receiver Alignment

RX IF Coils Alignment
Connect the RF Signal Generator to the ANT jack, and connect the AF millivoltmeter to the
EXT SP jack.
Tune the radio to 19.900 MHz, CW mode.
Inject a 19.900 MHz signal from the RF Signal Generator, then adjust the RF Signal
Generator output level to 0 dB.
Adjust T1012 on the MAIN Unit for minimum indication on the AF millivoltmeter.
PA Unit Alignment
Pre-Driver Section Idling Current Alignment
Connect the 50 Ohm Dummy Load to the ANT jack.
Remove the shorting-plug from J2003 on the PA Unit, then connect the DC Ammeter to J2003
(pin 1: "–" lead, pin 2: "+" lead).
Set VR2001 on the PA Unit fully counter-clockwise.
Tune the radio to 7.500 MHz, USB mode.
Key the transmitter (connect pin 5 of the MIC jack to GND) with no microphone input, and
adjust VR2001 for 300 mA (± 30 mA) on the DC Ammeter.
Disconnect the DC Ammeter, and replace the shorting-plug into J2002.
Driver Section Idling Current Alignment
Connect the 50 Ohm Dummy Load to the ANT jack.
Remove the shorting-plug from J2003 on the PA Unit, then connect the DC Ammeter to J2004
(pin 1: "–" lead, pin 2: "+" lead).
Set VR2002 on the PA Unit fully counter-clockwise.
Tune the radio to 7.500 MHz, USB mode.
Key the transmitter (connect pin 5 of the MIC jack to GND) with no microphone input, and
adjust VR2001 for 300 mA (± 30 mA) on the DC Ammeter.
Disconnect the DC Ammeter, and replace the shorting-plug into J2004.
Final Section Idling Current Alignment
Connect the 50 Ohm Dummy Load to the ANT jack.
Remove the solder jumper which is connected between TP2020 and TP2021 on the PA Unit,
then connect the "+" lead of the DC Ammeter to TP2020 and the "–" lead to TP2021.
Set VR2003 on the PA Unit fully counter-clockwise.
Tune the radio to 7.500 MHz, USB mode.
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FCC ID: K6610511070
IC ID: 511B-10511070
Alignment
Vertex Standard Co., Ltd.