Cessna ARC NAV/COM 300

Cessna ARC NAV/COM 300

Hello, i would like to know how to remove the Cessna ARC NAV/COM 300 radio out of my 150? So I can take it in to be serviced or replaced it with a slide in replacement I here it is simple to remove it, is it?


What all model # of cessna radios will replace this radio it is a 300 channel would like a 720 channel

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Re: Cessna ARC NAV/COM 300

There should be a small hole at the bottom front of the radio(most likely centered) behind that hole is an ALLEN type screw.simply insert the proper size allen wrench and turn it counter-clockwise.This loosens a"pawl" that holds it in the rack.once youve loosened it(about 5 turns) just pull straight out on the radio.Re-installation is of course reversed.
Ive got a Garmin GNC250XL GPS/COMM with moving map in my 150,and wouldnt get rid of it for the world.I suggest you look into one of these units.It will require rack installation,and some wiring,but its WELL worth the money...There are of course newer Panel mount GPS units out there with color etc,but the ole 250 is a great radio...tailwinds.

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Re: Cessna ARC NAV/COM 300

Hello, I found the screw it is not and allen screw but flat head it is right under the the model # RT 308 i hope that this is the right screw. i turned it and it just turned freely did not do anything but spin freely.

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Re: Cessna ARC NAV/COM 300

I got the radio out well the mechanic got it out

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Re: Cessna ARC NAV/COM 300

Thanks for the help all i got a nice new radio in the airplane dosent it make life easier with 2 radios.

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Re: Cessna ARC NAV/COM 300

There are a couple of direct slide in replacement radios for Cessna on the market.  These require no rewire behind the panel or other modifications ty our system other than just slip them in the old tray.  Narco makes the Mk12D and Mk12E, both direct Cessna replacement as does Mitchell.  Both of which are currently in production and both have a better reliability than the old ARC.

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Re: Cessna ARC NAV/COM 300

I have an MX-300 navcom that I had upgraded. this is the flip/flop digital type. I think it would be a direct replace. call me if intrested. 518-664-2880

george

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Re: Cessna ARC NAV/COM 300

Hello George,

I have a 1972 Cessna 172M equipped with original Cessna 300 Nav Com unit. The local Atlantic Avionics Company here at Halifax, Nova Scotia says that they don't service this type anymore, even though there may be very little actually wrong with the unit. If the MX 300 unit is a direct installation, then I would like to enquire if it is still available.

I will try telephoning this evening.

-Andrew

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Re: Cessna ARC NAV/COM 300

There are a lot of old threads regarding radio replacements.  I suggest doing a Search on this forum.

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Re: Cessna ARC NAV/COM 300

Do you still have the MX 300 for sale?

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Re: Cessna ARC NAV/COM 300

Hi
I worked for ARC in Boonton,NJ back in the early 70's I was the 2nd shift Navcom 300 series production line sole repair technician. All the units that didn't work properly after assembly or failed final test or  burn in came to me for repair. Need help?

Regards,
Joe

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Re: Cessna ARC NAV/COM 300

HI JOE,

HELP PLEASE.

I HAVE A 1974 C-150 WITH THE ARC MX300 NAV/COM. I FLEW A COUPLE OF WEEKS AGO AND THE RADIO WORKED FINE. LAST TIME I WENT FLYING THE RADIO WOULD NOT POWER UP. NO DISPLAYS, NOTHING. I CHECK ALL THE RADIO FUSES AND THEY ARE FINE. I AM TRYING TO REMOVE THE RADIO TO HAVE IT SERVICED. I TURN THE UNLOCKING SCREW UNTIL IT'S LOOSE BUT THE RADIO WILL NOT COME OUT. IT APPEARS TO BE STUCK ON THE LEFT SIDE. I AM AFRAID TO PRY TOO MUCH FOR FEAR OF DAMAGING THE LORAN OR THE PANEL. BEFORE I TRY TO REMOVE IT AGAIN IS THERE SOMETHING ELSE I CAN CHECK LIKE ANOTHER FUSE, LOOSE CONNECTION ETC. MY AIRPORT DOES NOT HAVE AN AVIONICS SHOP SO I'M STUCK. DO YOU KNOW OF ANY TRICKS IN REMOVING THIS UNIT.

THANKS.

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Re: Cessna ARC NAV/COM 300

Joe,
I may be interested in talking. I have a 172M. One Cessna and one King. The Cessna has no Nav and some modulation problems so I'm told.
How do you bill your time, Where are you located? I'm told this is not a great rdio or at least it's not easy to work on??

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Re: Cessna ARC NAV/COM 300

I can't get the lights to turn on for the frequencies for either comm or nav, top or lower stack--they did work, but as I was playing with freqeuncies and turning on and off the master switch to save battery the lights stopped coming on.  Volume knob does seem to turn on VOR and the radio sounds on, but no lights sad

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