# SDR HEEA0013930

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 16, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N81832
- Make and model: Bolkms BO105S
- Aircraft serial: S828
- System (JASC): [2312 · VHF Communications System](https://openairdocs.org/jasc/2312)
- Part: Transceiver
- Part number: 064101902
- Condition: Failed
- Location: Cockpit
- Component: KY196
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA0013930

## Discrepancy

HEAVY STATIC AND NO SIDETONE. PERFORMED PRELIMINARY INSPECTION.  ADJUSTED C/N SQUELCH AND SIDETONE.  REPAIRED.  ALSO ADJUSTED CARRIER SQUELCH.  FOUND TRANSMIT POWER OUT LOW.  REPLACED C623 AND C624 CAPACITORS.  NO HELP.  REPLACED T604 TRANSFORMER.  REPAIRED BUT FOUND MODULATIONDISTORTED AT 85% MODULATION.  REPLACED Q120, Q121, Q122, Q125 AND Q126 TRANSISTORS.  MODULATION STILL DISTORTED.

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