Procom BPF 70-4-hx User Manual

Bpf 70/4-hx

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BPF 70/4-HX

Band-Pass Filter for the 450 MHz Band

DESCRIPTION

The BPF 70/4-HX is a 4 helical resonator band-pass filter with aperture

coupling between the resonators.
This filter can be used as a preselector to protect a receiver from

interference from transmitters outside the band-pass limits.
The BPF 70/4-HX-C (C = cable) can be installed directly into the PRO-

AR4G-N, PRO-AR8G-N and PRO-AR16G-N receiver multicouplers as a

preselector.
When installed in the output of a transmitter, the BPF 70/4-HX reduces

spurious signals.
The BPF 70/4-HX is adjustable over the range 406 - 470 MHz.
Very compact due to use of helical resonators.
Careful choice of materials ensures reliable functioning over a wide

temperature range.
Extruded aluminium sections, steel racks and coax cables and

connectors with teflon insulation ensure good mechanical strength.
The filter is black vinyl coated to prevent corrosion.

ORDERING DESIGNATIONS

TYPE

PRODUCT NO.

BPF 70/4-HX

200000908

SPECIFICATIONS

ELECTRICAL

MODEL

BPF 70/4-HX

FILTER TYPE

Band-pass filter

TUNING RANGE

406 - 470 MHz

MAX. INPUT POWER

35 W

INSERTION LOSS

≤ 1.5 dB typ. 1.2 dB

0.5 dB BW MHz

Min. 3 MHz

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)

115 x 104 x 33 mm

WEIGHT

Approx. 430 g

TYPICAL RESPONSE CURVES

PROCOM A/S reserve the right to amend specifications

without prior notice.
03/12/12

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