Antenna-Amplifiers 2991 VHF TV Signal RFI Filters are engineered to block interference from HF and 6-meter amateur radio transmissions, enhancing TV signal clarity. They feature a common mode choke, and symmetrical high-pass filter, with a cut-off frequency of 111 MHz, allowing only signals from 111 MHz to 868 MHz to pass through. This makes it ideal for installations near ham radio stations or other RF sources. For optimal performance, install the filter close to the TV input 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.

  • 1.82MHz: 45dB

  • 28.4MHz: 36dB

  • 50.11MHz: 43dB

• RF Connectors: Type-F

• Cut-Off Frequency: 111MHz

• Frequency Coverage: 111 – 868MHz

• Impedance: 75-Ohm

• Attenuation Below Cut-Off

• Insertion Loss in Passband

  • 111MHz (TV S2): 1.3dB

  • 210MHz (TV C10): 2.1dB

  • 474MHz (DVB-T C21): 1.3dB

  • 858MHz (TV C69): 2.7dB

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

VHF RFI Filter For TV Signal Reception measured attenuation:

• 1.82MHz: 45dB

• 3.51MHz: 38dB

• 7.1MHz: 27dB

• 14.15MHz: 28dB

• 21.2MHz: 33dB

• 28.4MHz: 36dB

• 50.11MHz: 43dB

• 70.2MHz: 33dB

• TV S2 111MHz: 1.3dB

• TV C10 210MHz: 2.1dB

• TV DVB-T C21 474MHz: 1.3dB

• TV DVB-T C41 655MHz: 2.1dB

• TV C69 858MHz: 2.7dB