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BPF 70/3

Band-Pass Filter for the 70 cm Band

DESCRIPTION

The BPF 70/3 is a 3-¼ λ resonator band-pass filter with internal

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 406 - 470 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 brass, 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 70/3 200000896

SPECIFICATIONS

ELECTRICAL

MODEL BPF 70/3

FILTER TYPE Band-pass filter

TUNING RANGE 406 - 470 MHz

MAX. INPUT POWER 50 W

INSERTION LOSS ≤ 1.4 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) 230 x 77 x 33 mm

WEIGHT Approx. 550 g

TYPICAL RESPONSE CURVES

PROCOM A/S reserve the right to amend specifications

without prior notice.

10/03/11

BPF 70/3 1

Résumé du contenu

Page 1 - BPF 70/3

BPF 70/3Band-Pass Filter for the 70 cm BandDESCRIPTIONThe BPF 70/3 is a 3-¼ λ resonator band-pass filter with internalcoupling between the resonators.

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Procom BPF 70-3 Manuel d'utilisateur

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