Procom BRF 4-...-125 - Manual

BRF 4/...-125
Band-Reject Filters for the 80 MHz Band
DESCRIPTION
High power base station band-reject filters for the 66 – 88 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 4/1-125 200001918
BRF 4/2-125 200001919
BRF 4/3-125 200001211
SPECIFICATIONS
ELECTRICAL
MODEL BRF 4/1-125 BRF 4/2-125 BRF 4/3-125
FREQ.
RANGE
66 - 88 MHz 66 - 88 MHz 66 - 88 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
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
(at resonance)
≤ 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
1200 mm
L:125 x W:250 x
H:1200 mm
L:125 x W:375 x
H:1200 mm
WEIGHT Approx.
4.3 kg
Approx.
8.9 kg
Approx.
13.5 kg
PROCOM A/S reserve the right to amend specifications
without prior notice.
29/03/11