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Frequency Counter

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(Blue display)

     This is a universal frequency counter which indicates the frequency of the selected channel. It is designed for use in CB and Amateur radios.  All connectors, wiring, hardware and instructions are included.
    It is not a stand alone counter and will not read actual output frequency, just the frequency of an internal oscillator and then add to that to show the transmit frequency on the display.

THIS IS NOT LIKE THE FC-347 and 390 that were
compatible with Cobra/uniden Radios. This is for a 16MHZ VCO frequency tap ONLY.


  • Displays the Frequency ALL the time, in RX and TX.
  • No soldering required on many of the Galaxy radios, Texas Ranger TR-296 series, Connex and General. It plugs directly into a socket on the back of the radio next to the antenna connector.
  • Some radios will need installation like Cobra, Galaxy, Uniden and many others







Display is now BLUE

...Texas Ranger (SRA-FC393)...





 Power Requirements

8 - 13.8 Vdc

 Consumption Current

60 mA

 Input Impedance

5K W, 20pF

 Standard Oscillating Frequency

4.5 MHZ, 10 ppm

 Input Voltage

100 mV - 2 Vrms

 Size (W x D x H)

1 3/16" x 3 1/2" x 3 1/4"

SRA-FC393 insructions












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