Maintenance
48
Table 23
Bird 4020 Series RF Power Sensors
Table 24
Bird 4027A Series RF Power Sensors
RF Power Range
4021, 4022
4024, 4025
300 mW – 1 kW
3 W – 10 kW
Frequency Range
4021
4022
4024
4025
1.8 – 32 MHz
25 MHz – 1 GHz
1.5 – 32 MHz
100 kHz – 2.5 MHz
Accuracy, Fwd, Best Case
†
† For rated accuracy, no more than 1% AM; Harmonics –50 dBc or less
Derate accuracy by 3.0% (1
) below 15 °C and above 35 °C
± 3% (1
)
VSWR, Max.
4021, 4024, 4025
4022
1.05:1
1.05:1, 25 – 512 MHz and 1.10:1, 512 MHz – 1 GHz
Insertion Loss, Max.
4021, 4024, 4025
4022
0.05 dB
0.05 dB, 25 – 512 MHz and 0.13 dB, 512 MHz – 1 GHz
Directivity, Min.
4021
4022
4024
4025
30 dB
26 dB (28 dB typ), 400 – 1000 MHz
30 dB, 25 – 400 MHz
28 dB, 1.5 – 2.5 and 25 – 32 MHz and 30 dB, 2.5 – 25 MHz
28 dB, 100 – 125 kHz and 30 dB, 125 – 2500 kHz
CAUTION
Changing the sensor’s connectors will invalidate calibration data, and may reduce the
maximum power rating of the unit.
Frequency Range
4027A250K
250 – 400 kHz
4027A400K
400 – 550 kHz
4027A800K
800 – 950 kHz
4027A2M
1.5 – 2.5 MHz
4027A4M
3 – 5 MHz
4027A10M
10 – 15 MHz
4027A12M
10 – 15 MHz
4027A25M
25 – 30 MHz
4027A35M
35 – 45 MHz
4027A60M
45 – 65 MHz
4027A100M
95 – 105 MHz
4027A150M
150 – 170 MHz
RF Power Range
4027A12M
300 mW – 1 kW
4027A25M
3 W – 9 kW
4027A35M
3 W – 7.5 kW
4027A60M
3 W – 6 kW
4027A100M
3 W – 4 kW
4027A150M
3.75 W – 3.75 kW
All other models
3 W – 10 kW
Accuracy, Fwd, Best Case
†
± 1.0% (1
)
Calibration Frequencies, Typical (MHz)
††
4027A250K
0.25, 0.40
4027A400K
0.40
4027A800K
0.90
4027A2M
1.8, 2.0, 2.17
4027A4M
4.0, 5.0
4027A10M
10.0, 13.56, 15.0
4027A12M
10.0, 13.56, 15.0
4027A25M
25.76, 27.12, 28.48
4027A35M
40.68
4027A60M
55.0, 60.0
4027A100M
95.0, 100.0
4027A150M
162.0
Calibration Power, Typical
4027A12M
All other models
700 W
1.7 kW
VSWR, Max.
1.05:1
Insertion Loss, Max.
0.05 dB (with female “N” connectors)
