Labels:book | bulletin board | clock | crt screen | poster | reckoner | sky OCR: KENWOOD 907 SERVICE BULLETIN AMATEUR RADIO SUBLECT DATE -940 ANTENNA TUNER REL AYS - -86 Occasionally dur ing operation of the AT-940 VSWR of greoter then 1.5 to 1 might couse over loading the relay cont he antenna tuner This may especially not iceable when swi tching BANDS TUNING DET ormned too freouentlu following Drocedur should reduc8 eliminote this tendency Parts Required 069 Digital Tronsistor DTC 1248S R304 5.6K ohm 16 Resistor RD 48B2C562J Procedure: Add the circuit shown below After the circuit has bean inatolled odjust YR4 for 10-15 watt output when the antenna tuner oneretes TPC R47 this Ciraurt VR4 20K 69 TRO wten AT1G tuning Page 1of Time Required for this modif icetionis hour or less TKC32 186CLM TRIO-KENWOCD COMMUNICATIONS 1111WESTWALNU STREET COMPTON CA JFOFMA U.5.A MAILING ...
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