Antennas-Amplifiers 2993 UHF TV Signal RFI Filters are designed to suppress interference from HF, 6m, 2m, and 1.25m Amateur Radio transmissions, ensuring clean UHF TV signal reception. They feature a common mode choke, and UHF symmetrical high-pass filter, with a cut-off frequency of 300 MHz, allowing only signals from 300 MHz to 868 MHz to pass through. This filter is intended for use with UHF roof antennas, not cable TV systems, and should be installed directly before the TV aerial socket using a short RG6 or RG59 cable.

Important: Transmitting into these filters will destroy them. These are receive-only filters for 75 ohm cable or antenna systems.

Additional Features and Specifications:

• Receive-only filter: for 75-ohm cable or antenna systems.

• RF Connectors: Type-F

• Cut-Off Frequency: 300MHz

• Frequency Coverage: 300 – 868MHz

• Impedance: 75-Ohm

• Attenuation Below Cut-Off:

  • 28.4MHz: 38dB

  • 50.11MHz: 43dB

  • 70.2MHz: 46dB

  • 144MHz: 41dB

  • 222MHz: 25dB

• Insertion Loss in Passband:

  • 474MHz (DVB-T C21): 1.2dB

  • 655 MHz (DVB-T C41): 0.8dB

• Recommended Cable Length: 2.0 – 8.0in. (RG6 or RG59)

UHF RFI Filter For TV Signal Reception measured attenuation:

• 28.4MHz: 38dB

• 50.11MHz: 43dB

• 70.2MHz: 46dB

• 144MHz: 41dB

• 222MHz: 25dB

• TV DVB-T C21 474MHz: 1.2 dB

• TV DVB-T C41 655MHz: 0.8 dB