GMT Industrial Ltd KS395 User Manual

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CMATCL 
 
Owners Manual/Operating Instructions 
 
CMATCL, model KS395/MKA381 
 
General……. 
 
The CMATCL, KS395/MKA381 is a hand held Transmitter operating within the FCC 
part 90 frequency range. 
 
The transmitter is especially suited for use wherever a small, reliable hand held wireless 
microphone is required. Versions are available with optional microphone capsules. 
 
Please note that each transmitter requires a matching receiver on the same frequency. 
Standard “off the shelf” frequencies are available.  
 
The CMATCL KS395/MKA381 features single channel crystal controlled units for the 
ultimate stability and clarity as well as economy. 
 
Setup: 
 
Before setting up the transmitter, it is necessary to setup the receiver or at least check the 
receiver operation if the receiver has been installed previously. 
 
Place the receiver in an area with the antennas in clear view of the transmitter operating 
area. Connect the receiver audio output to the audio input of the mixer, amplifier or other 
device. Turn the input to these items down at this point. 
 
Apply power to the receiver. Note that there should be no “Carrier” or TX light on at the 
receiver at this time. If there is a light on, this indicates that other users nearby may be 
using the frequency or that RF interference is present on the frequency. 
 
If the interference is not severe, suitable operation can sometimes be made possible by 
adjusting the squelch control until the light goes off. (Transmitter off) If the light cannot 
be made to go off by adjusting the squelch control, then the frequency should be changed. 
 
Set the receiver audio output control to its midpoint (50% of rotation). 
 
Open the transmitter battery door and install a fresh 9 volts alkaline battery. Place the 
transmitter in the position desired and turn on the power switch. The Green battery light 
should flash once and go off. The carrier light at the receiver should now be on. You are 
now ready to use the microphone. Place the transmitter mute switch in the on position 
(up). Talk in your normal tone and volume. If the Red light on the transmitter comes on 
or continues to flash as you speak, turn down the microphone gain control until the Red