GENERAL GCP5000 (GCE) APPLICATION INFORMATION
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2-6
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
2.1.2.2 Harmon AFTAC II Unit
Table 2-5 depicts the frequency compatibility of the PSO Module Alternate I (Harmon AFTAC II)
frequencies with the frequencies used by Model 3000 or Model 4000 families of Grade Crossing
Predictors.
Table 2-5 PSO Module Alternate I (Harmon AFTAC II) Frequency
and 3000/4000 Family GCP Frequency Compatibility
Model 3000/4000/5000 GCP
Frequencies (Hz)
8
6
1
1
4
1
5
6
2
1
1
2
8
5
3
4
8
4
3
0
5
2
5
6
4
5
7
9
0
9
7
0
PSO Module
Alternate I
(Harmon AFTAC
II)
Frequencies
Group 1
Frequencies
500
900
1300
2300
3100
4000
5400
6400
7700
8900
10200
Group 2
Frequencies
700
100
1600
2800
3500
4900
5900
7100
8300
9500
Compatible
INCOMPATIBLE