6. OPTIONAL ACCESSORIESThe following accessories are available for more sophisti-cated operation of your receiver.• HS-7 MICRO HEADPHONES (16 OHMS)• HS-6 COMMUNICATIONS HEADPHONES(12.5 OHMS)Deluxe, very light-weight headphones designed for com-munications equipment.■ HS-5 COMMUNICATIONS HEADPHONES(8 OHMS)Headphones designed for communications equipment.These light-weight open air-type headphones remain com-fortable during extended operation. Easily attached ear-• IF-232C INTERFACEThe IF-232C Interface is the adapter for connection bet-ween the RS-232C terminal of a personal computer andthe interface terminal of the R-5000.• MB-430 MOBILE MOUNTThe Mobile Mount MB-430 allows easy installation and re-moval of the R-5000. The MB-430 can either be suspend-ed from the dashboard or attached to the transmissiontunnel or a center console. The transceiver tilt angle canbe adjusted 5 steps.Caution:Optional accessories should be installed by qualified ser-vice personnel to prevent personal injury or damage to theequipment.The following optional Crystal Filters can be used to re-duce adjacent channel interference.■ YK-88C CW FILTERCenter frequency : 8,830.7 kHzPassband width : 500 Hz (– 6 dB)Attenuation bandwidth : 1.5 kHz (– 60 dB)Guaranteed attenuation : More than 80 dB■ YK-88CN CW NARROW FILTERCenter frequency : 8,830.7 kHzPassband width : 270 Hz (– 6 dB)Attenuation bandwidth : 1.1 kHz (– 60 dB)Guaranteed attenuation : More than 80 dB• YK-88SN SSB NARROW FILTERCenter frequency : 8,830.0 kHzPassband width : 1.8 kHz (– 6 dB)Attenuation bandwidth : 3.3 kHz (– 60 dB)Guaranteed attenuation : More than 80 dB• YK-88A-1 AM FILTERCenter frequency : 8,830.0 kHzPassband width : 6 kHz (– 6 dB)Attenuation bandwidth : 11 kHz (– 60 dB)Guaranteed attenuation : More than 80 dB• VC-20 VHF CONVERTER UNITThe VHF Converter Unit for the R-5000 covers the fre-quency range between 108 MHz and 174 MHz (with WestGermany version: 144 MHz to 146 MHz).• IC-10 INTERFACE IC KITThe Interface IC Kit is designed to be installed internally inthe R-5000 to allow computer assisted control of variousreceiver operating parameters.Control is performed thru a computer's RS-232C terminalthru the IF-232C Interface (level translator).• VS-1 VOICE SYNTHESIZER UNITWhen the VS-1 Voice Synthesizer Unit is installed, the dis-played frequency is announeced by synthesized voice.• DCK-2 DC OPERATION KITThe DCK-2 is the DC power cable kit for DC operation ofthe R-5000.2-pin connector manufacturer: KENWOOD CORPORATIONPart number : E30-2055-0529