Figure 5: Gps Sats Screen; Table 4: Prn Satellite Equivalents - NorthStar 2201 Installation Manual

SECTION FOUR Using WAAS with Northstar's 941/951/952
PRN
120
ON GPS
33
SATS
SCREEN
PRN
130
ON GPS
43
SATS
SCREEN
Page 28
Note that the WAAS satellite numbers on the GPS SATS screen
don't match the pseudo random number (PRN) assigned by the
U.S. government to identify the actual satellites. For example,
the AOR (Atlantic Operating Region) satellite is "PRN 122," but
the 941/951/952 displays it as "35."
The satellite numbers that the 941/951/952 displays are just an
extension of the normal GPS constellation, which has 32
satellites. The 941/951/952 continues this numerical sequence
by using the number 33 for the first WAAS satellite, which
corresponds to PRN 120 (the lowest WAAS PRN assigned). See
Table 4 below for the 941/951/952 satellite equivalents for the
PRN's.

Table 4: PRN satellite equivalents

121 122 123
34 35 36
131 132 133
44 45 46

Figure 5: GPS SATS screen

124 125 126
37 38 39
134 135 136
47 48 49
2201 INSTALLATION MANUAL, Revision B
GPS
satellite
number
WAAS
satellite
number
127 128 129
40 41 42
137 138
50 51