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BPF 6/3

Band-Pass Filter for the 6 m Band

DESCRIPTION

The BPF 6/3 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 pass-band, or it can be used

to reduce spurious output from a transmitter with up to 50 watts of

output power.

The filter 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 passivated

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

the connectors.

The filter is black vinyl coated to prevent corrosion.

Band-pass filters similar to the BPF 6/3 but with pass-band frequency

between 30 and 66 MHz may be quoted on request.

ORDERING DESIGNATIONS

TYPE NO. PRODUCT NO.

BPF 6/3 200000886

SPECIFICATIONS

ELECTRICAL

MODEL BPF 6/3

FILTER TYPE Band-pass filter

TUNING RANGE 48 - 52 MHz

MAX. INPUT POWER 50 W

INSERTION LOSS ≤ 1.5 dB

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

FREQ. STABILITY Approx. 10 ppm/° C

CONNECTORS BNC-female (others on request)

DIMENSIONS (L x W x H) 175 (incl. conn.) x 77 x 33 mm

WEIGHT Approx 390 g

TYPICAL RESPONSE CURVES

PLEASE NOTE

BPF 6/3 provided with other connector types, or filters similar to the BPF 6/3

but with pass-band frequency between 30 and 66 MHz may be quoted on

request.

PROCOM A/S reserve the right to amend specifications

without prior notice.

25/03/11

Summary of Contents

Page 1

BPF 6/3Band-Pass Filter for the 6 m BandDESCRIPTIONThe BPF 6/3 is a 3-helical resonator band-pass filter with aperture-coupling between the resonators

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