Procom BPF 70/3 UHF notch filter
Procom BPBR 70/3 UHF pass-reject filter
Procom BPBR 2/4 and BRBP 2/4 VHF pass-reject filter
Procom BPF 2/4 VHF band pass filter
Procom BPF 2/3 VHF notch filter
Procom BPF 70/4 UHF band pass filter

Procom Filters

Procom filters are compact VHF and UHF notch, band pass and pass-reject filters for cutting interference at radio sites and in multi-coupling systems. They protect receivers from nearby transmitters and clean up transmitter spurious outputs.

  • Notch: BPF 70/3 (UHF) and BPF 2/3 (VHF)
  • Band pass: BPF 70/4 (UHF) and BPF 2/4 (VHF, 2, 4 or 6 MHz)
  • Pass-reject: BPBR/BRBP 2/4 (VHF) and BPBR/BRBP 70/3 (UHF) for closely spaced frequencies
  • Up to 50 W, N type (BNC, TNC, UHF or SMA on request)

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Product: Procom Filters (PROCOM-FILTERS)

SKU: PROCOM-FILTERS Categories: , Tags: , , , , , , ,

The right filter for the interference problem

  • Notch (band reject) filters remove one narrow band, usually a specific interfering transmitter, and pass everything else. The BPF 70/3 covers UHF 406–470 MHz. The BPF 2/3 uses helical resonators to notch a frequency in 144–175 MHz while passing 0–430 MHz.
  • Band pass filters pass only your band and reject everything outside it. They're ideal as a receiver preselector or to reduce transmitter spurious. Choose the BPF 70/4 for UHF 380–470 MHz (4–10 MHz bandwidth) or the BPF 2/4 for VHF 144–175 MHz in 2, 4 or 6 MHz bandwidths. The BPF 2/4-C fits directly into Procom PRO-AR receiver multicouplers.
  • Pass-reject filters pass one frequency and reject another close by, where a normal band pass or notch filter isn't steep enough. BPBR types reject on the high side of the pass frequency, and BRBP types on the low side. Each is built for a set pass-reject spacing.

Built to last

Extruded aluminium housings, PTFE-insulated cables and connectors, and a black vinyl coating against corrosion give stable performance over a wide temperature range. Pass-reject filters tuned for several channels or a set bandwidth are best factory tuned. Tell us your frequencies when ordering.

Related products

See our VHF & UHF cavity filters, Procom duplexers, Procom diplexers and Sinclair isolators. Signals NZ designs, installs and services radio sites across New Zealand.

Specifications

ModelTypeFrequencyMax powerInsertion lossConnectorSize / weight
BPF 70/33-cavity notch406–470 MHz, 4 MHz BW50 W< 1.5 dBN225 × 77 × 33 mm, 0.55 kg
BPF 70/44-cavity band pass380–470 MHz, 4–10 MHz BW50 W< 1.5 dBN208 × 104 × 33 mm, 0.69 kg
BPF 2/33-cavity helical notch144–175 MHz50 W< 1.5 dB (typ. 1.0)N160 × 77 × 33 mm, 0.42 kg
BPF 2/44-cavity helical band pass144–175 MHz, 2/4/6 MHz BW35 W< 1.5 dB (typ. 1.2)N165 × 104 × 33 mm, 0.5 kg
BPBR/BRBP 2/44-cavity pass-reject136–154 (L) / 152–175 (H) MHz, 4–8 MHz spacing50 W< 1.0 dB single channel. Reject > 90 dBBNC210 × 104 × 33 mm, 0.6 kg
BPBR/BRBP 70/33-cavity pass-reject406–470 MHz, 5–16 MHz spacing50 W< 0.7 dB single channel. Reject > 80 dBN225 × 77 × 33 mm, 0.51 kg

All models: 50 Ω, VSWR < 1.5:1. N type models can be supplied with BNC, TNC, UHF or SMA connectors on request.

BPF 70/3 Spec SheetBPF 70/4 Spec SheetBPF 2/3 Spec SheetBPF 2/4 Spec SheetBPBR/BRBP 2/4 Spec SheetBPBR/BRBP 70/3 Spec Sheet

Additional information

WeightN/A
Brand

Procom

Band

UHF, VHF

Filter

BPF 70/3 – UHF 3-cavity notch, 406–470 MHz, BPF 70/4 – UHF 4-cavity band pass, 380–470 MHz, BPF 2/3 – VHF 3-cavity helical notch, 144–175 MHz, BPF 2/4 – VHF 4-cavity helical band pass, 144–175 MHz, BPBR/BRBP 2/4 – VHF 4-cavity pass-reject, 136–175 MHz, BPBR/BRBP 70/3 – UHF 3-cavity pass-reject, 406–470 MHz

Version

Standard, 2 MHz bandwidth, 4 MHz bandwidth, 6 MHz bandwidth, BPBR L-4/6 (136–154 MHz, 4–6 MHz spacing), BPBR L-6/8 (136–154 MHz, 6–8 MHz spacing), BPBR H-4/6 (152–175 MHz, 4–6 MHz spacing), BPBR H-6/8 (152–175 MHz, 6–8 MHz spacing), BRBP L-4/6 (136–154 MHz, 4–6 MHz spacing), BRBP L-6/8 (136–154 MHz, 6–8 MHz spacing), BRBP H-4/6 (152–175 MHz, 4–6 MHz spacing), BRBP H-6/8 (152–175 MHz, 6–8 MHz spacing), BPBR 70/3-5/7 (5–7 MHz spacing), BPBR 70/3-7/9 (7–9 MHz spacing), BPBR 70/3-9/13 (9–13 MHz spacing), BPBR 70/3-13/16 (13–16 MHz spacing), BRBP 70/3-5/7 (5–7 MHz spacing), BRBP 70/3-7/9 (7–9 MHz spacing), BRBP 70/3-9/13 (9–13 MHz spacing), BRBP 70/3-13/16 (13–16 MHz spacing)

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