Motorola_T1959A_T1961A_T1962A_使用说明书手册

MOTOROLA INC.MOTOROLA HF-SSBCommunicationsGroupAutomatic Antenna TunerModels T1961A and T1962AInstallation Procedure1.INTRODUCTION2.PREINSTALLATION INSTRUCTIONS(Refer to Figure 1.)2.1 TUNE POWER ADJUSTMENT1.1Motorola HF-SSB Automatic Antenna Tuners,Models T1961A and T1962A,are antenna match-ing networks rated at 125 watts peak-envelope-power(PEP).Model T1961A Antenna Tuner matches the im-pedance of an end-fed antenna(vertical whip or randomCAUTIONlength wire)into a nominal 50-ohm impedance sourceThe following adjustments to thewith a frequency range from 2-to-18 MHz.ModelTRITON 20 or TRITON 12 and 24 chan-T1962A Antenna Tuner performs the same impedancenel radios must be performed before mak-match,but it can be used only with a 23'whip antennaing electrical connections to the antennaand at a frequency range from 2-to-9 MHz.tuner.1.2 Automatic tuning is accomplished throughmicroprocessor control of reed relays that switchinductors and capacitors in and out of the matching net-2.1.1TRITON 20 Adjustmentwork.The balance of this installation proceduredescribes preinstallation instructions,installation in-structions and ground systems for the radio and theStep 1.In the TRITON 20 instruction manual(68P81044E20),refer to the TRN4038APowerantenna tuner.Amplifier circuit board overlay and schematic.Step 2.With the radio in the TUNE MODE,adjustpotentiometer R441 for 3 watts t1 watt of power out-put into a 50-ohm resistive load.2.1.2 TRITON 12 and 24 Channel AdjustmentStep 1.In the TRITON 12 and 24 channel radio in-struction manuals (68P81030E35 and 68P81034E05),refer to the TLN1752A Power Amplifier circuit boardoverlay and schematic diagram.Step 2.With the radio in the TUNE MODE,adjustpotentiometer R41 for 3 watts1 watt of power outputFigure 1.Automatic Antenna Tunerinto a 50-ohm resistive load.©Motorola,lnc.1979All Rights Reservedtechnical uriting services68P81110E64-0Printed in U.S.A.1301 E.Algonquin Road,Schaumburg,Il.601965/15/80-PH1