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FCC ID: K6620285X20 

IC IF: 511B-20285X20 

Alignment

 

 

Transmitter Power 

 

With the power meter, dummy load and deviation meter connected to the antenna jack. 

 

Key the transmitter on 145.1 MHz. Adjust the output power is within 3.0 ±0.5 W on the 

power meter. (HI) 

 

Key the transmitter on 145.1 MHz. Adjust the output power is within 0.3 ±0.5 W on the 

power meter. (LOW) 

 

Key the transmitter on 435.1 MHz. Adjust the output power is within 2.0 ±0.5 W on the 

power meter. (HI) 

 

Key the transmitter on 435.1 MHz. Adjust the output power is within 0.3 ±0.5 W on the 

power meter. (LOW) 

 

 

Receiver Sensitivity 

 

With the dummy load and SINAD meter connected to the external speaker jack. 

 

Inject a RF signal as a level of -8 dBµV to the antenna jack. 

 

Tune the receiver on 145.1 (and 435.1) MHz. Adjust the SINAD is above 12 dB on the 

SINAD meter. 

 

 

Vertex Standard Co., Ltd. 

Summary of Contents for VX-3R

Page 1: ...nly by authorized Yaesu service technicians who are experienced with the circuitry and fully equipped for repair and alignment Therefore if a fault is suspected contact the dealer from whom the transceiver was purchased for instructions regarding repair Authorized Yaesu service technicians realign all circuits and make complete performance checks to ensure compliance with factory specifications af...

Page 2: ...nalyzer Deviation Meter linear detector AF Milivoltmetr AF Dummy Load 4 Ω 5 W DC Voltmeter high impedance Inline Wattmeter with 5 accuracy at 500 MHz 50 Ohm non reactive Dummy Load 100 watts at 500 MHz VHF UHF Sampling Coupler Alignment Preparation Precautions A dummy load and inline wattmeter must be connected to the main antenna jack in all procedures that call for transmission except where spec...

Page 3: ...udio signal as a level of 50 mV to the microphone input port Key the transmitter on 145 1 and 435 1 MHz Adjust the frequency deviation is within 4 0 4 4 kHz on the deviation meter CTCSS Deviation With the wattmeter dummy load and deviation meter connected to the antenna jack Key the transmitter on 146 05 and 440 05 MHz Adjust the frequency deviation is within 0 65 0 75 kHz on the deviation meter D...

Page 4: ...ithin 0 3 0 5 W on the power meter LOW Key the transmitter on 435 1 MHz Adjust the output power is within 2 0 0 5 W on the power meter HI Key the transmitter on 435 1 MHz Adjust the output power is within 0 3 0 5 W on the power meter LOW Receiver Sensitivity With the dummy load and SINAD meter connected to the external speaker jack Inject a RF signal as a level of 8 dBµV to the antenna jack Tune t...

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