Icom IC-R9000L [67/72] Adjustment 12 i

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ADJUSTMEN 12 1 FREQUENCY CALIBRATION A very accurate frequency counter is necessary t the frequency of the IC R9000L However a simp tion may be performed by receiving radio statio or other standard frequency signals The calibration adjusts the reference oscillator E calibration is therefore unnecessary 1 Set USB mode CALIBRATOR CALIBRATOR 2 Set the operating frequency to the standard freq station minus 1 kHz Use a standard frequency below 30 MHz EXAMPLE When using WWV 10 00000 MHz adjust the ing frequency to 9 99900 MHz 10 00000 MHz 0 00100 MHz 1 kHz 9 9990 3 Turn ON the CALIBRATOR switch 4 Adjust the CALIBRATOR pot for a zero beat Zero beat means that two signals are exactly th frequency resulting in a single audio tone bein emitted When you can receive a very accurate statio 1 GHz calibration can also be performed u spectrum scope screen Use FM or AM mode wh the spectrum scope screen 12 2 MAIN DIAL BRAKE ADJUSTMENT The tension of the main dial may be adjusted to sui operating needs 1 Use a philips head screw driver 2 The brake adjustment screw is located on the the receiver cabinet below the main dial 3 Turn the brake adjustment screw to a c tension level while turning the main dial co and evenly in one direction

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