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BPF 2/3

Band-Pass Filter for the 160 MHz Band

DESCRIPTION

The BPF 2/3 is a 3-helical resonator band-pass filter with aperture-

coupling between the resonators.

This filter can be used as a preselector to protect a receiver against

interference from transmissions out of the passband, or it can be used

to reduce spurious output from a transmitter with up to 50 W output

power.

The filter can be tuned within the entire 144 - 175 MHz band. It has

very small dimensions owing to the use of helical resonators. Careful

design and choice of materials ensure reliable operation over a wide

temperature range.

The housing is made of extruded aluminium, the chassis of steel, and

teflon insulation has been used in the coaxial cables and in the

connectors.

The filter is black vinyl coated to prevent corrosion.

ORDERING DESIGNATIONS

TYPE PRODUCT NO.

BPF 2/3 200000808

SPECIFICATIONS

ELECTRICAL

MODEL BPF 2/3

FILTER TYPE Band-pass filter

TUNING RANGE 144 - 175 MHz

MAX. INPUT POWER 50 W

INSERTION LOSS ≤ 1.0 dB (typ.)

ATTENUATION AROUND PASS-BAND See curves

OUT OF BAND ATTENUATION See curves

IMPEDANCE Nom. 50 Ω

SWR ≤ 1.5

MECHANICAL

TEMP. RANGE –30° C → +60° C

CONNECTORS BNC-female (others on request)

DIMENSIONS (L x W x H) 160 x 77 x 33 mm

WEIGHT Approx. 420 g

TYPICAL RESPONSE CURVES

PROCOM A/S reserve the right to amend specifications

without prior notice.

14/02/11

Summary of Contents

Page 1

BPF 2/3Band-Pass Filter for the 160 MHz BandDESCRIPTIONThe BPF 2/3 is a 3-helical resonator band-pass filter with aperture-coupling between the resona

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