Issue 1 21-June-10

Indoor Channel Grouped Band-Pass Filters

OBF2137 Group A Band-pass filter for Ch 21~37 (470 - 606Mhz)

OBF3453 Group B Band-pass filter for Ch 34~53 (574 - 743Mhz)

OBF4868 Group C/D Band-pass filter for Ch 48~68 (682 - 862Mhz)

Industry experts predict that 92% of homes in the UK will suffer from “overlap interference” after the Digital Switch-Over (DSO)

where signals are arriving from 2 or 3 competing transmitters and potentially causing reception problems. The solution (if you’re not

going to fit a new channel grouped aerial) is to fit a band-pass filter prior to the TV or set-top-box input.

• High Out-of-Band rejection >-30dB typical

• Low In-Band insertion loss <2dB typical

• Reduces overlap interference from out-of-band transmitters

• High quality fully screened die-cast metal housing with F connectors

• Colour coded label for easy aerial group identification

• Visible mounting holes & slots for easy fixing

Model OBF2137 OBF3453 OBF4868

No of inputs 1 1 1

No of outputs 1 1 1

Insertion loss - In-band <2dB <2dB <2dB

Out-of-band rejection - Lower >-53dB @ 385MHz >-30dB @ 530MHz >-30dB @ 600MHz

- Upper >-30dB @ 662MHz >-30dB @ 812MHz >-20dB @ 930MHz

Frequency range - In-band 470-606MHz 574-734MHz 682-862MHz

Channel group / (Ch range) A (Ch21-37) B (Ch34-53) C/D (Ch48-68)

Connectors F – female type

DC Pass DC Blocked

Dimensions 82 x 34 x 18mm