I am sure that radio is at least 25-30 years old? How could I tell when a radio was manufactured? It would be interesting to know...
The MX-385 radio in my former 152 has a serial number on the back. I'm sure that if you contact TKM and provide the serial number of your MX-300 they can tell you when it was manufactured. Also, my radio has yellow tage dated 7/1/02, so it must've been made prior to 2002.
Great detective work, Hung!
So, the radio is probably around 25 years old now! I appreciate ANYTHING working after 25 years!
I'll give it another go on the workbench and see what happens - while these are old, they are relatively simple, rugged, and parts are still available. Thanks!
Good news -- BEAMANS called me today stating they completely RE-Overhauled the radio on the warranty and replaced just about everything they could...it's on the way back to me and they are even paying for the shipping this time.
The BEVAN AVIONICS repaired radio came back to me, was installed, and seems to be working well! That is the good news...
I sent it in for refurbishment in Aug of 2023, got it back in late January of 2024, and put less than a dozen hours on it before it failed. So, I sent it back and Tom on the bench repaired it at no additional cost even though it was several DAYS outside the 90-day warranty.
So far, so good.
Tom at BEVAN AVIONICS made it right.
So, there are TWO places you can send your old MX-300's...
BEVANS and ELLISON avionics - both work well and do the repairs for a comparable price.
My personal strategy is to keep THREE of these MX-300's with two in the plane at all times and one in ready storage or refurbishment.
I have one I am sending to ELLISON soon so I can have all three in FMC (fully maintenance capable) condition. A glass panel is out of the question with me, so I will keep these old, heavy and (mostly) reliable MX-300's working until it's time for me to stop flying in the next 5-7 years...
Ron, that is interesting BOTH of our MX-300 radios refurbished at BEVANS had to go BACK for a re-do...
So, having gone with both Bevans and Ellison, I am going to go with Ellison as the primary repair shop in the future -- and JUST sent another one out yesterday.
Why?
-Faster turn time - weeks vs. months. -Lower standard rate of repair by about $100. ($650 vs. $550) -Far better customer service and TLC communications.
Bevans came through on the warranty this month and was able to repair it the second time at no additional cost, but we both had to send the radio BACK to them and that is a $50 hit each time which is not chump change for me anymore.
Plus, the time and aggravation of losing a radio in flight, pulling and plugging another one is all on us.
I would still use both but now my preference is Ellison.
I am grateful people out there are STILL working on them. I know it's not easy to keep people trained and keep parts accessible, so overall, still happy.
I am not sure what would happen if I were faced with the prospect of having to invest $5K in a basic nav/com to fly day VFR...probably not going to happen for me! So, I am with the MX-300 to the end, and when the plane is passed to someone else, they can have the joy of a fully digital panel upgrade.