Specifications

9-1
Chapter 9 - RLS-1000B Remote Link Switch
The RLS-1000B provides a method to connect up to three transceivers to the remote base
port of the CAT-1000B repeater controller. Transceiver selection is accomplished by
grounding three control lines. Since the receiver audio and COR inputs are mixed, all
three transceivers can be selected at the same time. To select a transceiver, connect
the CAT-1000B user function switch outputs to the control line inputs on the RLS-
1000B.
COR Output Polarity
The COR output will always be active HIGH. The COR polarity dipswitch on the CAT-1000B
must be set to the OFF position.
Audio Input Output
The audio input and output circuits are identical to the CAT-1000B controller. Level
adjustments on both the input and output amplifiers make it easy to compensate for
varying input and output requirements. The audio input impedance is 10K ohms while
the output is 600 ohms.
Receiver Audio Response
Each receiver input has a buffer amplifier with a gain of three. The frequency
response is flat over a range of 300 to 3000 Hz. If discriminator audio is being used,
it may be necessary to add some high frequency roll off. Space has been provided to
install a capacitor across the feedback resistor on each receive audio amplifier.
These locations are identified on the RLS-1000B board as C2, C11 and C16. Start with a
.0047uF capacitor. Increase the value to provide more high frequency roll off or
decrease the value to provide less high frequency roll off.
TRANSCEIVER #3
TRANSCEIVER #2
TRANSCEIVER #1
PORT
#3
PORT
#2
PORT
#1
PORT R
RLS-1000B
REMOTE LINK SWITCH
CAT-1000B
PORT #2