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| | Joined: Dec 2016 Posts: 756 Likes: 3 Member/750+posts | | Member/750+posts Joined: Dec 2016 Posts: 756 Likes: 3 | I know you said funds are limited, Mark, but you may want to have an avionics shop take a quick look. They can pull it out (or you could) and bench check it. Probably wouldn't cost a lot and would let you know for sure if there is something wrong with it and if so, whether or not it could be easily fixed. It might just be a fuse or something like that, either internal to the radio or in the airplane. Our #2 NAV/COM fuse sometimes acts up even though the fuse it good. I can turn the fuse holder and it usually starts working. I would hate to see you spend money for a new radio when you don't really need one (even though I realize you may want a more modern radio). The second NAV/COM may not get used a whole lot. That's a great idea. I am also (per suggestion) going to swap COM 1 and 2 around to see if it's the tray/wiring. I just need to stop flying it and do some troubleshooting!
1977 Cessna 150M N704JQ (Sold) Based at KSFM ![[Linked Image from visitedstatesmap.com]](https://visitedstatesmap.com/image/CTILINIAMEMANHNYOHPARIVTWImed.jpg) States I have landed in N704JQ  | | | | | Joined: Dec 2016 Posts: 756 Likes: 3 Member/750+posts | | Member/750+posts Joined: Dec 2016 Posts: 756 Likes: 3 | The RT328 has relays. It's possible an avionics repairman can tinker with it. Your installation could be wrong. Turn up the squelch and you think it's dead. Thanks, I will check. Squelch knob didn't help anything.
1977 Cessna 150M N704JQ (Sold) Based at KSFM States I have landed in N704JQ | | | | | Joined: Dec 2016 Posts: 756 Likes: 3 Member/750+posts | | Member/750+posts Joined: Dec 2016 Posts: 756 Likes: 3 | Good news! On the advice of Lyle, I pulled the radio out today in order to swap the RT328T and the MX300. Before I pulled the MX I took a look at the 328T pins on the back. Turns out there was a bent pin. I straightened out the pin and re-installed the radio. Lo and behold the quick com check with my handheld worked great. I couldn't check NAV because I was in the hangar and there was no way to pick up the VOR. I will do a proper check on both COM and NAV (hopefully) tomorrow. The RT328T is not a long term solution for me but it looks like I at least have dual COM's again. Thanks everybody for the suggestions.
1977 Cessna 150M N704JQ (Sold) Based at KSFM States I have landed in N704JQ | | | | | Joined: Sep 2006 Posts: 8,775 Likes: 300 Member/7500+posts | | Member/7500+posts Joined: Sep 2006 Posts: 8,775 Likes: 300 | Good news, Mark. At least now you have some breathing room! I had quite a bit of static in my MX 300. I pulled the radio out and used contact cleaner. I had to use a soda straw to clean the back of the tray, but it worked great (knock on wood)! I hope both the COM and NAV on your older radio work like a charm. | | | | | Joined: Mar 2004 Posts: 15,900 Likes: 999 Member/15,000 posts | | Member/15,000 posts Joined: Mar 2004 Posts: 15,900 Likes: 999 | Your membership to this club just paid for it self!
Ron Stewart N5282B KSFZ ![[Linked Image from visitedstatesmap.com]](https://www.visitedstatesmap.com/image/CTILINIAMEMANHNJNYOHPARIVTWVsm.jpg) | | | | | Joined: Jun 2004 Posts: 35,585 Likes: 565 DA POOBS Member with 30,000+ posts!! | | DA POOBS Member with 30,000+ posts!! Joined: Jun 2004 Posts: 35,585 Likes: 565 | YAY!!!
Man, is that a relief, or what?!
Good on ya, Mark!.
![[Linked Image from animatedimages.org]](https://www.animatedimages.org/data/media/218/animated-penguin-image-0137.gif) [ animatedimages.org] ![[Linked Image from visitedstatesmap.com]](https://visitedstatesmap.com/image/ALARILINIAKSKYLAMDMIMNMSMONJOHOKPATNTXWVWI4387262092be694508e4e9f014001607468590med.jpg) Imagine a united world.
Join the Popular Front for the Reunification of Gondwanaland. | | | | | Joined: Jul 2004 Posts: 21,807 Likes: 2288 Member/20,000 posts | | Member/20,000 posts Joined: Jul 2004 Posts: 21,807 Likes: 2288 | That's good news, Mark.......great suggestion, Lyle.  I'll always default to TD's well known suggestion: DO EASY FIRST. Jim
Cessna 150/150, N2259M - Mighty Mouse
| | | | | Joined: Dec 2016 Posts: 756 Likes: 3 Member/750+posts | | Member/750+posts Joined: Dec 2016 Posts: 756 Likes: 3 | Well the COM worked great. Seems to work as good as the MX300 in terms of range and clarity. The NAV did not work at all. OBS wouldn't budge and I couldn't pick up any VOR ID's. I need to do a little more investigating on the NAV side but I'm happy to have the COM working. I don't have an immediate need for dual VOR's anyway.
1977 Cessna 150M N704JQ (Sold) Based at KSFM States I have landed in N704JQ | | | | | Joined: Dec 2016 Posts: 756 Likes: 3 Member/750+posts | | Member/750+posts Joined: Dec 2016 Posts: 756 Likes: 3 | P.S. This thread might need to be moved to technical questions!
1977 Cessna 150M N704JQ (Sold) Based at KSFM States I have landed in N704JQ | | | | | Joined: Apr 2010 Posts: 10 Member | | Member Joined: Apr 2010 Posts: 10 | You can also call TKM and see if they have a MX 300 for sale. We bought one from them a couple of years ago. If I remember correctly, they gave us a good deal because it was a return and they couldn't sell it as new.
Deb Michael
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