Procom BRF 4-...-250 - Manual

BRF 4/...-250
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 ø250 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. 8000.
High frequency stability on temperature and power.
19” mounting brackets are available as an option.
ORDERING DESIGNATIONS
TYPE PRODUCT NO.
BRF 4/1-250 200001923
BRF 4/2-250 200001924
BRF 4/3-250 200001212
SPECIFICATIONS
ELECTRICAL
MODEL BRF 4/1-250 BRF 4/2-250 BRF 4/3-250
FREQ. RANGE 66 - 88 MHz 66 - 88 MHz 66 - 88 MHz
MAX. INPUT
POWER
350 W @
0.5 dB IL
200 W @
1.0 dB IL
350 W @
1.0 dB IL
200 W @
2.0 dB IL
350 W @
1.5 dB IL
200 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 ø250 x
1200 mm
L:250 x W:500 x
H:1200 mm
L:250 x W:600 x
H:750 mm
WEIGHT Approx.
8.6 kg
Approx.
17.5 kg
Approx.
26.6 kg
PROCOM A/S reserve the right to amend specifications
without prior notice.
29/03/11