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Bennett Avionics





There is currently a 3-4 week lead time to get a Serviceable MX-300 certified and ready to ship. We can order new MX-300 radios at any time.
Product Information
Part Number: P/N: MX300
Condition: Serviceable
Certification: 8130-3
Voltage: 14 V
Included: 90 Day Warranty
Comments: There is no Rack and Connector included with this radio, as it is designed to use your existing ARC (Cessna) RT-328D / RT-328T hardware.
Comments: We offer the option of ordering a brand new MX-300 for you. We would have this radio shipped directly from the factory to your shipping address.
Comments: A factory-new MX-300 comes with a 2-year warranty from TKM.

Product Description

When you want to upgrade your radios, one of the common barriers is the cost and hassle of installation. Wouldn't it be great to just slide a replacement right into the existing rack? If you have thought this, you should know about TKM.

TKM has developed a special niche in the avionics market. They make only direct replacement radios for common older avionics. This means that the owner of a TKM radio can quickly and easily replace the original radio at no installation cost, while enjoying convenience features such as frequency flip flop, frequency memory, and a bright easy-to-read display.

The MX-300 is the TKM radio designed as a slide-in replacement for a variety of 14 volt ARC radios. The most common replacements are the following radios:

  • ARC RT-328D
  • ARC RT-328T
  • ARC RT-528E

If you have an older 14 volt ARC radio, we may be able to supply an adapter that allows the MX-300 to replace it. (Please contact us for price and availability.)

This radio is available with either a black or tan faceplate, to better match your radio stack.

There is more to the MX-300 than just painless installation. It features:

  • FM Immune (ICAO Annex 10)
  • Simultaneous digital display of both active and standby frequencies
  • Push button frequency flip-flop
  • 10 memory channels
  • 8 watts transmit power
  • Automatic squelch

These are the most common indicators used in MX-300 installations (the same as with an RT-328T installation):

    For VOR/LOC installations:
    For VOR/LOC/Glideslope installations:
If you have any questions about this item, please click Ask us about the TKM MX-300 NAV/COMM to send us an email.

Warranty Information

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