Procom BRF 2-3 User Manual download pdf

BRF 2/3

Band-Reject (Notch) Filter for the 160 MHz Band

DESCRIPTION

The BRF 2/3 is a 3-cavity notchfilter using helical resonators.

This filter rejects a narrow band of frequencies in the 2 m band and

passes all others in the range 0 - 430 MHz. The filter can be applied

both in connection with transmitters and receivers to attenuate

interfering signals causing cross modulation effects. The filter can be

employed as a single component or it can function as an integrated part

of a complete multicoupling system.

The BRF 2/3 can be tuned within the complete 144 - 175 MHz band.

Careful design and choice of materials ensure reliable operation over a

wide temperature range.

The housing is made of extruded aluminium, the chassis of passivated

steel, and teflon insulation has been applied in the coaxial cables and in

the connectors.

The filter is black-vinyl coated to prevent corrosion.

ORDERING DESIGNATIONS

TYPE NO. PRODUCT NO.

BPF 2/3 200001201

SPECIFICATIONS

ELECTRICAL

MODEL BRF 2/3

FILTER TYPE Band-reject (notch) filter

TUNING RANGE 144 - 175 MHz

MAX. INPUT POWER 50 W

INSERTION LOSS

(out-of-reject area 0-430 MHz)

≤ 0.8 dB

REJECT ATTENUATION

(Notch depth)

Single-channel tuned: ≥ 53 dB

Multi-channel tuned, 1.0 MHz BW: ≥ 24 dB

1 dB NOTCH

BAND WIDTH

At 144 MHz: Approx. +2.3/–2.2 MHz

At 175 MHz: Approx. +2.6/–3.6 MHz

IMPEDANCE Nom. 50 Ω

SWR (out-of-reject area) ≤ 1.5

MECHANICAL

TEMP. RANGE –30° C → +60° C

FREQ. STABILITY Approx. 10 ppm/° C

CONNECTORS BNC-female

DIMENSIONS (L x W x H) 165 x 77 x 33 mm

WEIGHT Approx 420 g

PLEASE NOTE

The notch filter resonators can also be separately tuned to three different

frequencies in a “multiple notch” configuration, but the attenuation on each

frequency is then only approximately one third of the normal attenuation

when all notches work together.

TYPICAL RESPONSE CURVES

PROCOM A/S reserve the right to amend specifications

without prior notice.

13/02/13

Summary of Contents

Page 1

BRF 2/3Band-Reject (Notch) Filter for the 160 MHz BandDESCRIPTIONThe BRF 2/3 is a 3-cavity notchfilter using helical resonators.This filter rejects a

Comments to this Manuals

No comments

Procom BRF 2-3 User Manual

Browse online or download User Manual for Accessories communication Procom BRF 2-3. Procom BRF 2-3 User Manual

Summary of Contents

Comments to this Manuals

Related products and manuals for Accessories communication Procom BRF 2-3