96
Version 2.0 and Version 2.3
$GPGSA, a, X, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, X.X, X.X, X.X
*hh
a: M = manual, with action to function in 2D or 3D
A = automatic 2D/3D mode
X: 1 = invalid fix, 2 - 2D mode, 3 = 3D mode
XX (12 times): Satellite numbers, nil for the unused fields
X.X: Perpendicular position data (PDOP)
X.X: Horizontal position data (HDOP)
X.X: Vertical position data (VDOP)
Version 2.0 and Version 2.3:
*hh: Sentence checksum
GSV: Satellites in view
Version 1.5
$GPGSV, X, X, XX, XX, XX, XXX, XX... ... .., XX, XX, XXX, XX
Version 2.0 and Version 2.3
$GPGSV, X, X, XX, XX, XX, XXX, XX... ... .., XX, XX, XXX, XX *hh
X: Total number of messages (1 to 3)
X: Message number (1 to 3)
XX: Total number of satellites in view
XX: Satellite number **
XX: Altitude in degrees **
XXX: Azimuth in degrees **
XX: Reception rating from 0 to 99, nil when the satellite is not being monitored **
**Repeat a maximum of 4 times, fields nil if less than 4 satellites in a sentence
Version 2.0 and Version 2.3:
*hh: Sentence checksum
MSK: MSK receiver interface
Version 1.5
$GPMSK, X.X, M, X.X, M,
Version 2.0
$GPMSK, X.X, M, X.X, M, *hh
Version 2.3
$GPMSK, X.X, M, X.X, M, , *hh
X.X: Beacon frequency (283.5-325.0 kHz)
M: Choice of frequency: Manual
X.X: Information output from the beacon: 100 or 200 bps
M: Choice of information output: Manual
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