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Old 04-09-2021, 08:52 AM
Redbud40 Redbud40 is offline
Join Date: Mar 2013
Location: Tx
Posts: 96
Default Garmin GTX 345 Issues

Transponder working fine then went into no transponder no ADSB mode.
Figure 7-2. Came back for awhile but then went back into failure mode as in 7-2.
Not much guidance other than what the screen is displaying.
Any suggestions. Unit less than 2 years old.
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Mike Robinson
RV-6a N731CK
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Old 04-09-2021, 10:02 AM
OKAV8r OKAV8r is offline
Join Date: Feb 2007
Location: Seattle
Posts: 153
Default antenna

I would suggest there is about 8 in 10 chance it is the antenna, antenna coax, coax connectors.
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Old 04-09-2021, 02:04 PM
bjdecker's Avatar
bjdecker bjdecker is offline
Join Date: Jun 2005
Location: Georgetown, TX
Posts: 636

The "No 1090ES TX" error will happen if the GTX 345 looses Baro and/or Position.
Brian Decker
Retired Firmware Guy and Airplane Builder

2020 RV-14 QB -- Under construction - Tailcone & Empennage Complete.
2018 RV-7 QB -- Built, Flying
2007 RV-7 QB -- Built, Drowned, Resurrected and flying
1998 RV-8 QB -- Started, Sold
1986 Mooney 205SE
1980 Mooney 231

Aided and abetted building a number of other RV's.

Last edited by bjdecker : 04-09-2021 at 02:07 PM.
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