CAT Enterprises
            Mobile Microphone



Noise Canceling Microphone


     The Road-King 56 (RK-56) Dynamic Microphone is designed for voice communications applications requiring a rugged, hand-held microphone. Its noise-canceling design makes it particularly effective for use in noisy locations, and its excellent voice response characteristics make it a good choice in quiet areas as well.

     The RK-56 uses dynamic, differential type cartridge which discriminates against sounds greater than -inch (12 mm) away. A non-marking lip guard assures the user of correct microphone-to-mouth positioning. Best noise cancellation is achieved with the edge of the lip guard just touching the upper lip. The push-to talk switch is located on the top of the microphone housing. The RK-56 is equipped with the  Highest Quality, "BELDEN" six-conductor, receive coiled cord which is relieved at the microphone housing by a telephone type strain relief grommet. The cord may be wired for either relay or electronic switching.

  • Dynamic LO-Z Noise canceling microphone
  • Non-Amplified
  • Polyurethane coated steel grill screen
  • Limited one year warranty
  • Pre-wired for 4 pin Cobra,
    REQUIRES PLUG and WIRING for other types of radios.


  • Microphone type:  Noise-canceling dynamic
  • Frequency response: 100 Hz to 8 KHz
  • Output level at 1 KHz:
    Open circuit: -72 db (ref: 0 db= 1 V/ubar)
    Power level: -55db  (ref: 0 db= 1 mW/10 ubar)
  • Output Impedance: 2000 ohms (matches 600-5000 ohm inputs)
  • Cable (mic cord):
    6 conductor, receive, coiled cord: 12 inches (304 mm)
    retracted and 6 feet (1.8m) extended.
  • CASE: receive Cycolac
  • Weight:8 ounces (0.2 kg)
  • UPC #: 0 45464 76964 3
...RK56B with Belden Mic Cable....
Pre-wired with high quality 4 pin Plug for Cobra / Uniden / President / Galaxy / Radio Shack / Ranger



Additional Items you might also consider:

Wire with high quality 5 pin Plug for  Cobra / Uniden / President. $15
Wire with high quality 5 pin DIN Plug for Cobra / Uniden $15
Wire with high quality 4 pin Plug for Midland $15
Wire with high quality 6 pin Plug for Ranger $15
Wire with high quality 5 pin DIN Plug for Radio Shack / Sears $15
Wire with high quality plug for OTHER. Please specify  your exact Radio and Model in the end of your Order Form when Checking out. $15
Wire / Mod mic, SPECIAL For the Bluetooth Cobra Radios with button and 6 Pin plug. $47

The item most overlooked when ordering a custom radio is the microphone.  Your new tuned radio will NOT
sound great  with a stock mic on it  If your CB is more than a tool for work, you NEED to upgrade your microphone. 
My personal favorites are the Astatic 636L and RD104E.

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.

Orders requiring technical work are shipped
 in about 3 to 14 days.

Heads up- The Price of many China-made
 items went up due to tariffs.

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


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