Labels:reckoner | sky OCR: KENWOOD ASB- 1046 Service Bulletin Amateur Radio Division Subject: TS 850S Mixer FET Change Date: March 28 1994 Symptom: Several units were discoverec during production by our QC department that experienced difficuty when the transceive was being adjusted for an S-1 reading on the S-Meter Countermeasures: Variations in the gain of the devices used for Q16 and Q17, the second mixers on the RF Unit (X44 3120-00) appear to cause of this symptom. We therefore recommend replacing these two transistors with 2SK520 K43) devices These devices have lower IDSS (Drain breakdown current) and therefore provide greater conversion gain. result the total gain of the circuit is increased Parts Required: Qty Description PIO Part No New Part No. Circuit Description Second Mixer FET 2SK520 K44 2SK520 K43) Q16 ...
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