CAT Enterprises


Voice Processor

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The SP-1a Speech Processor was developed by Clear Channel Corporation for the Ranger AR-3300 and AR3500 radios. It works well in most radios in AM FM & SSB. It is an audio processor that delivers an average of 90% modulation. It boosts lower levels to within 90% of itís maximum output with a very low distortion. It connects in-line of the audio Mic input of the microphone jack. It also requires a 12 Volt connection in the radio. A SPST switch can be used to switch the SP-1a in and out of the circuit. When switched off the speech processor is completely out of the circuit leaving the radio back to stock audio.

  • Complete Audio Processing for Condenser or Dynamic Microphones.
  • Completely Shielded for High RF Immunity.
  • No Batteries Needed.
  • Premium Electronic Components & Circuit Board.
  • 100% Production Tested.
  • 90 Day Limited Warranty.


... SP-1a Module Only... $39.50
...Module and install into a New radio... $64.50

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Radios requiring technical services may be delayed 7 to 10 days

If you place an order from outside the continental USA, we will calculate your actual shipping and send you a PayPal payment request.  We do NOT export Antennas or Base station radios.


954-771-8161 Our Warranty and Return Policy 954-771-8161  


BellsCB Radio, 5051 NE 12th Avenue, Oakland Park, Florida. 33334   (954)771-8161