TKM Mx-11 COM Replacement Radio

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Part# 11-18815
MFR Model# MX-11R



The MX-11 Comm is designed as a slide in replacement for the Narco Com 11, Com 11B, Com 111, Com 111B, and Com 120. The unit will replace the com 10 and Com 110 when the Nav 10 and Nav 110 are not used in the system. The MX-11 is warranted for 6 months. The MX-11 is the same unit as the earlier MX \-11 except it does not come with the tray.

Note: We do not offer 8130 forms on this unit

California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


  • Frequency Range: 118.000 to 136.975 in 25 KHz increments
  • Frequency Stability: +/- .003%, -20C to 50C
  • Transmitter Power: 8 watts minimum
  • Modulation: 85% minimum with limiting at 90%
  • Sidetone: Adjustable to 4 mw into 500 OHMs
  • Receiver Sensitivity: 1.5uV (soft) for 6 db s+n/n
  • Comm Selectivity: 3 db @ +/- 7.5 KHz; 65 db @ +/- 17.5 KHz; 90 db @ +/- 25 KHz
  • Squelch: Noise adaptive squelch with manual override
  • Audio Output: 5 watts into a 4 ohm speaker; 40 mw into a 500 ohm headphones
  • Weight: 3.13 lbs.
  • Power: 14/28 volts @ 6/3 amp in transmit
  • Frequently Purchased With
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Fit and works in existing tray Hoping for a little more life out of it than the last 2 in the s@me trays in 2 different airplanes.

David A Verified Purchase


November 4, 2021

I got my first MX-11 about 25 years ago, got it new and it served me very well for a long time. When it began giving problems, I bought a used one from EBay. Had both of these service by TKM, but neither one really worked right after that. The one from eBay is in use now, but doesnt transmit clearly on some frequencies. With I had a new one, but they cost twice as much as before.

David H
September 14, 2018

If the serial number is not High. Factory repair is no good. Local repair is as good as the hand written data given by TKM

November 16, 2016

I replaced the old one that had failed, only because I could not get TKM Radio Manufacture to respond to my/their required online repair request form, and I was not ready to upgrade my radios until annual. So, I just pressed the easy button. I gave it 1 star because it did at least work, and Aircraft Spruce had it in stock and had me back flying again fast ( they are great)! I dont however like supporting radio manufactures who do not seem interested in supporting their products and did not respond to their own poorly devised customer online service request.

Charles M Verified Purchase


December 16, 2021

Less than a year old and the new TKM unit I purchased from Spruce lost output volume. Reinstalled the 40 year old Narco and its still going strong :). This TKM is less than a year old there was another TKM 11 in the plane that failed but could never reach the company thats when I bought this replacement. I still thought perhaps I could get the old one repaired, when I did finally get in contact with them they said it was too old to fix. Wonder what they will say about this one thats 11 months old? We will see and Ill be sure to let you know!

Charles M
October 25, 2022

Unit was out of box failure. This the third Michel radio with performance problems. (The first two were NOT purchased thru Aircraft Spruce.) Amanda is the best. She got a call ticket created within minutes of learning of the problem. Aircraft Spruce is my number one supplier for this reason.

Rex M
August 19, 2018


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What are the dimensions of the MX 11 radio?

Height - 1.6", Width - 6.31", Depth - 11.1" with connectors.

Q: Why do you not offer an 8130 with this and what is the significance of that?

8130-3 forms are for exporting certified units out side of the country. If you are installing this within the USA a 8130-3 is not needed.

Q: Does this unit also replace the Narco MK-12D TSO unit?

Per manufacturer: No, this is not a replacement for the Narco MK-12D.

Q: Are these units (TKM MX-11) new or reconditioned?

Yes the MX 11 we sell are new units.

Q: Is the rack, connector, or install kit available?

The TKM MX-11 is simply a slide in replacement radio and does not come with other hardware.

Q: The TKM MX-11 does not come with a mounting tray, do you sell this hardware separately?

No racks are available for the TKM line. They are slide-in replacements only, not for new install. There are also no connectors included or available.

Q: Does the radio have a wx-11 8.33 spacing? That is the frequency we use in Norway.

Per the manual, this is not capable of using 8.33 KHz

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