Improve xxGSA comments

1 files changed, 6 insertions, 4 deletions

diff --git a/driver_nmea0183.c b/driver_nmea0183.c
index 6776efb8..5d651b07 100644
--- a/driver_nmea0183.c
+++ b/driver_nmea0183.c
@@ -557,19 +557,21 @@ static gps_mask_t processGSA(int count, char *field[],
      * Not all documentation specifies the number of PRN fields, it
      * may be variable.  Most doc that specifies says 12 PRNs.
      *
+     * the CH-4701 ourputs 24 PRNs!
+     *
      * The Skytraq S2525F8-BD-RTK output both GPGSA and BDGSA in the
      * same cycle:
      * $GPGSA,A,3,23,31,22,16,03,07,,,,,,,1.8,1.1,1.4*3E
      * $BDGSA,A,3,214,,,,,,,,,,,,1.8,1.1,1.4*18
      * These need to be combined like GPGSV and BDGSV
      *
-     * Some Skytraq will emit all GPS in one GNGSA, Then follow with
-     * another GNGSA with the BeiDou birds.
-     *
      * Some GPS emit GNGSA.  So far we have not seen a GPS emit GNGSA
      * and then another flavor of xxGSA
      *
-     * SEANEXX and others will emit two adjacent GNGSA:
+     * Some Skytraq will emit all GPS in one GNGSA, Then follow with
+     * another GNGSA with the BeiDou birds.
+     *
+     * SEANEXX and others also do it:
      * $GNGSA,A,3,31,26,21,,,,,,,,,,3.77,2.55,2.77*1A
      * $GNGSA,A,3,75,86,87,,,,,,,,,,3.77,2.55,2.77*1C
      * seems like the first is GNSS and the second GLONASS