I have a Garmin GLO 1 receiver which I use with :- [CODE] ultragpslogger.com [/CODE] application on my LG Stylo 5 Android phone. I can record the NMEA sentences that the receiver is issuing. I did this at a nearby large parking lot for a shopping complex, where there is a clear view of the sky in all directions, with the receiver at a fixed location and recording at the maximum rate for 4 minutes. In the $GPGSV sentences I see 90 & 91 as a satellite numbers. I also see the numbers 90 & 91 in some of the $GPGSA sentences. These two numbers are not shown in the list of GLONASS satellites given at this web location :- [CODE] gpsrchive.com/Shared/Satellites/Satellites.html#Track%20GLONASS [/CODE] I am puzzled & wonder what to make of these two numbers (90 & 91). My guide for interpreting NMEA sentences is at this web address :- [CODE] aprs.gids.nl/nmea/#gsa [/CODE]