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FCC ID: K6620285X20 

IC IF: 511B-20285X20 

Alignment

 

shields and circuit boards firmly affixed in place. Also, the test equipment must be 

thoroughly warmed up before beginning. 

Notes: Signal levels in dB referred to in alignment are based on 0 dBµ = 0.5 µV. 

 

All items tune and/or adjust by Auto-Tuning Mode or Manual Tuning Mode. 

 

Transmitter Deviation 

 

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

 

Inject a 1 kHz audio 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. 

 

 

DCS Deviation 

 

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

 

Key the transmitter on 145.1 (and 435.1) MHz. Adjust the frequency deviation is within 

0.65-0.75 kHz on the deviation meter. 

Vertex Standard Co., Ltd. 

Содержание VX-3R

Страница 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...

Страница 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...

Страница 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...

Страница 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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