Procom BRF 70-...-125 - Manual

BRF 70/...-125
Band-Reject Filters for the 450 MHz Band
DESCRIPTION
High power base station band-reject filters for the 380 – 470 MHz range.
The use of large ø125 mm cavities means a high Q,
resulting in a very narrow notch bandwidth.
The large dimensions also mean a high power rating.
Unloaded Q of a single cavity is approx. 4500.
High frequency stability on temperature and power.
19” mounting brackets are available as an option.
ORDERING DESIGNATIONS
TYPE PRODUCT NO.
BRF 70/1-125 200001240
BRF 70/2-125 200001941
BRF 70/3-125 200001942
SPECIFICATIONS
ELECTRICAL
MODEL BRF 70/1-125 BRF 70/2-125 BRF 70/3-125
FREQ. RANGE 380 - 470
MHz
380 - 470 MHz 380 - 470 MHz
MAX. INPUT
POWER
300 W @
0.5 dB IL
175 W @
1.0 dB IL
300 W @
1.0 dB IL
175 W @
2.0 dB IL
300 W @
1.5 dB IL
175 W @
3.0 dB IL
ATTENUATION See figure 1 See figure 2 See figure 3
1 dB NOTCH
BANDWIDTH
1 ‰ of f c 1 ‰ of f c 1 ‰ of f c
IMPEDANCE Nom. 50 Ω Nom. 50 Ω Nom. 50 Ω
SWR < 1.5 < 1.5 < 1.5
MECHANICAL
TEMP.
RANGE
RH 0-90%
non-condensing
–30° C →
+60° C
–30° C →
+60° C
–30° C →
+60° C
FREQ.
STABILITY
Approx. 1.5
ppm/° C
Approx. 1.5
ppm/° C
Approx. 1.5
ppm/° C
CONNECTORS N-female N-female N-female
DIMENSIONS ø125 x
303 mm
L:125 x W:250
x
H:303 mm
L:125 x W:375 x
H:303 mm
WEIGHT Approx.
1.2 kg
Approx.
3 kg
Approx.
4.2 kg
TYPICAL RESPONSE CURVES
Figure 1
TYPICAL RESPONSE CURVES
Figure 2
TYPICAL RESPONSE CURVES
Figure 3
PROCOM A/S reserve the right to amend specifications
without prior notice.
06/04/11