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OCR: KENWOOD ASB-1027 Service Bulletin Amateur Radio Division Subject: TM-732A Protection of Q201 in 430 MHz Unit Date: June 28 1993 Symptom: Q201 the first RF Amplifier in the 430 MHz unit fails at random. Corrective Action Addition of diode D218 in parallet with diode D214 in the RA line provides increased surge protection for Q201 Parts Required: Qty Description Kenwood Part No. Circuit Description Diode HSK277 D218 Caution: This modification requires soldering equipment rated for CMOS type circuits It also requires familiarity with surface mount soldering techniques you no have the proper equipment or knowledge do not CN2 attempt this modification yourself PPY Seek qualified D218 (HSK277 000 020 430 MHz TY RX Unit X57 4000- 17 Foil Side View Time required for this modification 30 minute or ...