Procom BRF 4-...-250 User Manual download pdf

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 fc 1 ‰ of fc 1 ‰ of fc

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

BRF 4/...-250 1

Summary of Contents

Page 1 - BRF 4/...-250

BRF 4/...-250Band-Reject Filters for the 80 MHz BandDESCRIPTIONHigh power base station band-reject filters for the 66 – 88 MHz range.The use of large

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