CAT Enterprises

All orders requiring technical work will be shipped in 7 days.

  Radio Modifications



 Powerband Final Upgrade $39.50

 Dual Fan Kit You install the fans yourself
2x Fans, 2x grills and 8x screws provided.

 Installation to a new radio. $60.00

 RFX-75 and Installation in a new radio with dual fans $149.50
The Powerband RFX-75

75 watt Original Equipment Final Amplifier Section with high performance low pass filter for Magnum transceivers (and many others)

The RFX75 is a new RF section for Magnum 10 Meter Amateur transceivers. The RFX75 can be bought as a replacement part. It's is a low cost solution to replace bad RF driver and final output stages in other 10 Meter Amateur transceivers that used obsolete / discontinued transistors.

This module is being used in many types of radios for power increase of 75W.
(Output varies from radio to radio. It depends on the radios driver stage. Anywhere from 60W to 100W)

 Installation Instructions for these radios can be found on

  • Cobra 25
  • Cobra 29
  • Cobra 148
  • EPT3600xxx Chassis Radios
  • EPT6900xxx Chassis Radios
  • Galaxy DX929 (2SC1969 Chassis Version)
  • Galaxy DX929 MOSFET Final Version
  • Galaxy DX939, DX949, DX959 and Ranger 396, 696, 966 (2SC1969 Chassis Version)
  • Galaxy DX939, DX949, DX959 and Ranger 396, 696, 966 (MOSFET Chassis Version)
  • Magnum S-3, Magnum S-6, and Magnum S-9 10 Meter Amateur Transceivers with Main Printed Circuit Board Numbers* 9821R17 through 9821R21
  • Magnum OmegaForce S45 and DeltaForce
  • RCI 2950
  • RCI 2950DX
  • Texas Ranger 127FSC
  • Uniden 68 series radios
  • Uniden 78 series radios



    This is a complicated modification and should not be done by an amateur. You should probably leave the installation and alignment to a proven technician.   

Shown here with optional dual fan kit installed. Kit includes 2 micro-fans, 2 fan grills and 8 screws.


Various radios we have installed the RFX-75:

Comply with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Further information can be found at the FCC website or the ARRL website

Transmitting using this radio requires an Amateur Radio License. Licensing information can be obtained by visiting or In Canada, visit or







See Also:



Final Transistor: ERF7530
Driver Transistor: ERF2030
Low Pass Filter: 3-Stage
Dimensions: 3-3/8" x 1-5/8" x 2"








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

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