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 TX AF Monitoring function

When the TX AF Monitoring function is set to ON in the RE-
MOTE BOX SET MODE, and one CONTROL HEAD operator 
is communicating, the audio can be heard from the SP-22 

EXTERNAL

 

SPEAKER

 on the other CONTROL HEAD side.

The optional SP-22 

EXTERNAL

 

SPEAKER

 is required.

NOTE:

 When one CONTROL HEAD operator is communi-

cating, “IN USE” blinks on the other CONTROL HEAD’s 
display and the TX indicators lights red.

I N

U S E

 NOTES

•  Transmission can be performed on either CONTROL HEADs 

1 or 2 at the same time.

•  The  Power  ON  Password  function  will  not  work  properly 

when attaching the RMK-4.

•  The RMK-4 is not designed for the single-head operation. 

For single-head operation, use the original attachment and 
cable combination— no RMK-4 is necessary.

   But when the one of CONTROL HEADs is accidently bro-

ken, the RMK-4 may go into the unintended single-head op-
eration mode. In that case, the Intercom function 

MUST

 be 

turned OFF. Otherwise, any problem may occur.

10

3

DUAL-HEAD OPERATION

Summary of Contents for RMK-4

Page 1: ...INSTRUCTION MANUAL RMK 4 SEPARATION KIT...

Page 2: ...unit with the RMK 4 and CONTROL HEADs in areas with temperatures below 30 C 22 F or above 60 C 140 F DO NOT use chemical agents such as benzine or alcohol when cleaning as they can damage the RMK 4 an...

Page 3: ...lling the programmable function keys See at right for details The serial number seal is put here and labeled RMK 4 Function name stickers There are no labels on the programmable function keys since th...

Page 4: ...F CONTENTS iii 1 CONNECTION 1 5 Removing the transceiver s main unit attachment 1 Connecting CONTROL HEAD and RMK 4 2 Attaching the RMK 4 4 Mounting 5 2 REMOTE BOX SET MODE 6 8 Set mode items 6 3 DUAL...

Page 5: ...the arrow The flat cable should be carefully disconnected from the attachment Main unit attachment Main unit attachment Flat cable t Unscrew the 4 screws then remove the front plate from the main uni...

Page 6: ...he circuit board screw w Connect the separation cable to CONTROL HEAD The cable can be inserted into either the left or right grooves as needed Separation cable Cable groove CONTROL HEAD Reinstall the...

Page 7: ...ide of the separation cable that is connected to CONTROL HEAD to the RMK 4 After the cable is connected reinstall the front plate and the 4 screws The cable can be inserted into either the left or rig...

Page 8: ...flat cable and the RMK 4 are connected attached correctly and not upside down w Replace the screw that was removed from the main unit in step e in p 1 to the chassis e Main unit RMK 4 RMK 4 w e Flat...

Page 9: ...r securely with the 4 supplied screws to a solid surface Bracket screw D Overhead mounting Mount the controller securely with the 4 supplied screws to a solid surface which can support more than 2 kg...

Page 10: ...oth dual head and sin gle head operations are set in the USER SET MODE Please refer to the instruction manual of the transceiver for details Set mode items The following functions other than RX Speake...

Page 11: ...EAD to monitor the other side s communication When one CONTROL HEAD operator is communicating the audio can be heard from the SP 22 EXTERNAL SPEAKER on the other CONTROL HEAD side The optional SP 22 E...

Page 12: ...adjustable by CONTROL HEADs D Intercom function Set the Intercom function to ON or OFF default ON The Intercom function allows CONTROL HEAD operators to communicate each other via their microphones Th...

Page 13: ...al can be heard on the caller side s CONTROL HEAD external speaker and the main unit s external speaker When the message signal is received it is not displayed on the LCD of CONTROL HEADs during inter...

Page 14: ...d the TX indicators lights red I N U S E NOTES Transmission can be performed on either CONTROL HEADs 1 or 2 at the same time The Power ON Password function will not work properly when attaching the RM...

Page 15: ...y duty microphone HM 148T Self grounding heavy duty DTMF microphone SM 25 DESKTOP MICROPHONE SP 22 EXTERNAL SPEAKER Compact and easy to install Input impedance 4 Max input power 5 W The SP 22 is not r...

Page 16: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan A 6757H 1US q Printed in Japan 2009 Icom Inc...

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