I’ve been comparing the Garmin GDL-82 to the SkyBeacon and like them both for my application. The one thing I cannot figure out is the difference between the two in relation to how they “monitor” your transmitter. For reference the GDL-82 Manual says this in para 2-1 “This unit transmits ownship Automatic Dependent Surveillance-Broadcast (ADS-B) data through the UAT data link. It interrogates connected transponders for Mode 3/A squawk code, IDENT status, and pressure altitude. The GDL 82 with GPS/SBAS includes an internal GPS/SBAS receiver. This receiver allows the unit to function as its own position source for the ADS-B Out message, when an approved position source interface is not installed.” And the SkyBeacon manual says this in para 6.3 “skyBeacon utilizes uAvionix’s Power Transcoder to ensure proper synchronization of data elements between Secondary Surveillance Radar (SSR) replies and ADS-B transmissions. These elements include Mode A squawk and IDENT status. In remote areas where you may not be interrogated by SSR, these data elements may at times be unavailable. The Power Transcoder additionally serves to provide Continuous CalibrationTM data to the altitude encoder.” So my question is what’s the difference? The GDL-82 says it interrogates the transponder and the SkyBeacon says it monitors. Does this mean if you were to take off from an airport that is out of range from secondary surveillance radar and your entire flight stayed outside or under the SSR range meaning your transponder would never be interrogated would the SkyBeacon never receive the transponder Mode A squawk and IDENT status? Would this affect your ADS-B out broadcast? In this same scenario does this mean since the GDL-82 interrogates the transponder it would receive this info? If I have this correct the final question would be does any of this even matter for VFR US flights? Just trying to fully understand the differences in the two units here.