Labels:book | monitor | reckoner | sky OCR: KENWOOD SB-970 SERVICE BULLETIN AMATEUR RADIO SUBJECT DATE SM-230 BANDSCOPE ATTENUATION 05/ 29/90 When the SM- -230 is used as bandscope the attenuator circuit is bypassed Somet, imes necessary to use the attenua tor during strong iqna] recept ion or high noi ise cond it, ons The fol low ing modif icat ion will allow the attenua COr circuit tc funct lon in the bandscope mode REQUIRED PARTS W05 -0309 -00 ATT SUB -UNIT Disconnect the power cord and patch cords Remove the top cover 6 screws) Remove the Hori zontal unit's mount ing screw and secure the ATT sub- unit with the ied 6mm screw and washer Remove connector P12 from the Hori zontal unit and insert it into jack P1 on the ATT sub-unit Insert connector from the ATT sub-unit into jack P12 on the Horizontal unit Insert the two wire plug su ...
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