GTX345 vs GNX375 Xpdr Mode

Discussion in 'Avionics and Upgrades' started by Rob58, Aug 15, 2019.

  1. Rob58

    Rob58 Pre-takeoff checklist

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    Does the GTX345 ADS-B transponder offer any functionality that is not available in the transponder feature in the newer GNX375? Likewise is there any transponder/ADS-B feature in the GNX375 that isn't available in the GTX345?
     
  2. Jesse Saint

    Jesse Saint Pre-takeoff checklist

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    My understanding is that the GNX375 is the GPS175 merges with a GTX345. Others may know better, but my understanding is that they would have the same features as far as ADS-B and transponder are concerned.
     
  3. Tennis

    Tennis Pre-Flight

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    Would like to hear more on this subject it's more important wanting to make the right decision
     
  4. NordicDave

    NordicDave Cleared for Takeoff

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    I'd look at both manuals and see if what's missing that's important to you. For me having an AHRS via bluetooth to drive synthetic vision on an iPad app was important for me, and both units do this capability. Also connecting an OAT probe to the transponder fo read realtime density altitude and OAT temp, instead of just pressure altitude.
     
  5. Ignacio Allende

    Ignacio Allende Pre-Flight

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    Very interesting. Specially about the Ahrs behavior, I could ditch my Gdl.