Gene Sullivan
Filing Flight Plan
- Joined
- Jul 16, 2021
- Messages
- 11
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Gene Sullivan
I am installing a used MX 300 radio in my musketeer the radio uses a ARC in525a course indicator I have downloaded the instruction manual for the ARC RT328T radio the MX 300 is a direct replacement radio I have all the original wire bundles that came out of the donner aircraft I have wired the installation per the 328T manual I will try to up load the wiring diagram am an A/P I/A and have been working on aircraft for over 50 years the problem I am having is the two/from flags always shows' off and every now and then will momentarily show to or from and goes back to off I have checked and checked agen the wiring from the radio rack to the course indicator I have sent the indicator off to be checked it was returned to me with no defect noted I have also tried another MX300 radio same problem I must be missing something but it is driving me nuts also when I try the VOR test button I get a good needle swing but the flag remains off the com side of the radio works great any help would be welcomed