Labels:book | bulletin board | reckoner | sky OCR: KENWOOD ASB-1002 Service Bulletin Amateur Radio Division Subiect: TS- 450/690 Distorted TX w/TNC Date: November 18 1992 Note: This bulletin supercedes bulletin ASB -994 dated April 10 1992 We have recei ived several reports of distorted transmitter audio when using packet TNC controller such as the AEA PK 232 10 Kantronics KAM etc The symptom will generally disappear if the transceiver and TNC unit are powered from difTerent sources Cause: The audio output level from the TNC is generally too high and causes overload of the microphone amplifier circuit previous models such as the TS -440S the incoming TNC audio was inserted after the microphone amplifier With the TS -450/690S inserted before the microphone amplifier Just moving the insertion point to the output of the circuit is not satisfa ...
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