163 CONNECTION AND MAINTENANCE■ AntennaA key element n the performance of any communcatonsystems s an antenna. Contact your dealer for more nfor-maton regardng antennas and how to nstall them.■ Fuse replacementA fuse s nstalled n the suppled DC power cable. If a fuseblows or the transcever stops functonng, track down thesource of the problem f possble, and then replace the dam-aged fuse wth a new rated one.❑ Fuse ratng: 10 AUSE the 10 A fuse only.■ CleaningIf the transcever becomes dusty or drty, wpe t clean wth asoft, dry cloth.AVOID the use of solvents such as benzene oralcohol, as they may damage the transcever sur-faces.■ Options• O.C-1.1.32A/O.C-347 dc power cable2 fuse holders are attached. USE the 20 A fuse only.OPC-1132A : 3 m (9.8 ft)OPC-347 : 7 m (23 ft)• O.C-1.939 acc cableAllows you to connect to an external termnal.• HM-1.52/HM-1.52T/HM-1.48G/HM-1.48T hand microphoneHM-152 : Hand mcrophoneHM-152T : DTMF mcrophoneHM-148G : Self ground heavy duty mcrophoneHM-148T : Self ground heavy duty mcrophone wth 10-keypadThe 10-keypad of ths mcrophone can be used for theDTMF code transmsson only.• SM-25 desktop microphone• S.-5/S.-1.0/S.-22 external speakerInput mpedance : 4 øMax. nput power : 5 WSP-5 : Large speaker for good audo qualty.SP-10 : For all-round moble operaton.SP-22 : Compact and easy-to-nstall.• UT-1.08R dtmf decoder unitProvdes pager and code squelch capabltes.• UT-1.09R/UT-1.1.0R scrambler unitsNon-rollng type (UT-109R)/Rollng type (UT-110R) voce scramblerunt provdes hgher communcaton securty.