Bosch Security Systems Inc. M523 Manual De Usuario

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Telex Model RKP-4 Beltpack 
 
 
 
Owners / Users Manual 
(Preliminary Information) 
 
General Description: 
 
The Telex model RKP-4 beltpack transceiver is a 
component of the RKP-4 wireless intercom system. 
The RKP-4 is intended for use as a belt worn wireless 
full duplex intercom radio for use in a professional 
installation such as television or cinema production. 
 
A RKP-4B base station can be used with one RKP-4 
beltpack.  The RKP-4 transmits within the 614.1 to 
746 MHz range (TV Channels 38-59).  It receives in 
the 482 to 607.9 MHz range (TV Channels 16-36).  
The TR-1 transmitter operates on a single frequency 
within an 18 MHz wide section of the transmit 
frequency range.  The receiver also operates on a 
single frequency within an 18 MHz wide section of the 
receiver frequency range. 
 
Typical transmitter conducted output power is 50 mW. 
The RKP-4 transmit power can be set to automatically 
reduced when the unit is close-in to the base station to 
aid in intermodulation reduction and unnecessary 
transmit power. 
 
Operating frequencies can be selected from pre-set 
groups or the user can select special operating 
frequencies within the 18 MHz wide allotments. 
 
The Rear LCD display and buttons plus the talk 
function switch, is located on the back panel.  
 
From the rear LCD display and buttons the following 
menus may be obtained: 
 
•  Group and Channel 
•  Transmit Frequency 
•  Receive Frequency 
•  Battery Life 
•  Microphone Gain 
 
The top LCD display and associated buttons are used 
to access various users on any digital matrix system 
attached to the base station.  The user’s name is 
displayed on the top LCD if the base station is attached 
to a matrix system. 
 
The on/off/volume control, talk and listen buttons, talk 
and listen lights, low battery indicator, microphone 
audio level indicator are located on the top panel. 
 
Transmit and receive antennas are attached to the 
RKP-4. Either or both unscrew for field replacement 
but are not coaxial connectors.  
 
The RKP-4 beltpack can be powered by AA Alkaline 
or a Nickel-Metal Hydride Battery pack. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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