ELVAT0ECar Alarm Transmitter

FCC ID LABEL FORMAT AND LOCATION Applicant:NUTEK CORPORATION FCC ID:ELVAT0E FCC ID: ELVAT0E This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC ID LABEL AREA

Operational Description The car alarm transmitter is a low powered, hand held unit for remote controlling the car locks and other features. The transmitter is powered by a 12 volt battery. It is designed to operated on a single fixed frequency at 434 MHz. See the attached block diagram and schematic. There are 4 buttons trigger the integrated circuit (IC1) which produces the digital control signals and will modulate the carrier signal. The carrier signal is generated by a crystal oscillator/ amplifier circuit comprised of a 434 MHz crystal (XTAL) and a npn transmitter (TR1). The modulated output of the RF amplifier stage is coupled to the PCB strip antenna. The coupling network comprised of C3, C4 and C5. The strip antenna is attached on PCB permanently around 30 mm. The transmitter is manually operated by the buttons pushed and will automatically deactivate instant after the button being released. This feature is incorporated by the IC1 internally. All tuning and verification are performed by the manufacture and there are no adjustments can be made by the user. No external ground is required or used with this transmitter.

  
 
 


    


 

  





   
  




 
 
  











 








 


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