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IC-04AT EXPANDED RF | Radioaficion Ham Radio

IC-04AT EXPANDED RF

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ICOM IC-04AT

EXPANDED RF

1. Remove battery and antenna.

2. Remove screws open case.

3. Locate and remove chip diode D2 on Logic unit.

4. On 02's with ser # over 34,000 - Install a diode across pads of diode D4 (see drawing) 1N4148 or 1SS211

5. On serial #'s below 34,000 install three diodes, (see drawing)

6. Reassemble the radio.

7. Reset the microprocessor. (ser#<34000 Push button next to litho batt, on >34000 Hold [FUNCTION] and turn power on

Note Adjust VCO for .8 VDC at lowest desired Freq. Measure at VCO test point.

ICOM IC-04AT EXPANDED RF

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