petehowell
Well Known Member
Need some help from the Gurus!
I have a Collins TDR-950 transponder in the -9A and over the last week it has been wonky(technical term). When cold, it fires ups and transponds just fine, but about 10-15 min after launch, it goes tango uniform. No reply light, nuthin'. I checked with ATC, Even "ident" does not work when it is not transponding.
More info: Shut her down for a while and she will work again for another 15 min or so. The reply light fires up when the switch is set to test and when ident is pushed.
Any thoughts for trouble shooting or repair? I know this thing is as old as I am and I got it cheap, so no regrets. The question is if it is worth fixing - If the cavity tube is blown will it work at all?
Dropping in a Garmin 320 would be the plan, but it will require some panel rework b/c the Garmin is quite a bit longer.
BTW, ATC In Minne and Madsion were great about working with me and the issue - they just asked to get it fixed ASAP.
Thanks for any help!!
I have a Collins TDR-950 transponder in the -9A and over the last week it has been wonky(technical term). When cold, it fires ups and transponds just fine, but about 10-15 min after launch, it goes tango uniform. No reply light, nuthin'. I checked with ATC, Even "ident" does not work when it is not transponding.
More info: Shut her down for a while and she will work again for another 15 min or so. The reply light fires up when the switch is set to test and when ident is pushed.
Any thoughts for trouble shooting or repair? I know this thing is as old as I am and I got it cheap, so no regrets. The question is if it is worth fixing - If the cavity tube is blown will it work at all?
Dropping in a Garmin 320 would be the plan, but it will require some panel rework b/c the Garmin is quite a bit longer.
BTW, ATC In Minne and Madsion were great about working with me and the issue - they just asked to get it fixed ASAP.
Thanks for any help!!