IEC-type Inline LTE Blocking Filter 15dB-55dB (upto ch 59)

IEC-type Inline LTE Blocking Filter 15dB-55dB (upto ch 59)

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f-type inline LTE Blocking Filter 35dB LTE A Block - 55dB LTE C Block (upto ch 57)


A convenient low-cost filter for overcoming interference to broadcast reception from LTE (4G) mobile networks.

The introduction of new mobile telephony and broadband data services in former TV channels 61 to 69 (part of the ‘digital dividend’) is likely to cause interference to many existing terrestrial TV reception and distribution systems. This easily-installed low-pass filter can be used to overcome interference problems in many such systems.



  • Passes all terrestrial broadcast transmissions up to and including TV channel 59.
  • High attenuation in LTE bands, will cure the majority of interference problems, from both base stationsand mobile user equipment.
  • Low insertion loss and good 75 Ω match throughout the pass-band.
  • IEC connectors with good screening factor, helping prevent leakage around the filter.
  • Male and female connectors allow insertion into existing systems with no need for further cables or back-to-back adapters.
  • Power-pass: this is a pure low-pass filter and passes AC and DC line-power.
  • Power pass rating 24 V and 250 mA max.


Application guidance

  • Usable for weak signal channel 60 areas with increased insertion loss.

  • Care must be taken to avoid interference pick-up after the filter. Attention must be paid to the quality of components such as flyleads and outlet plates, etc.

  • In severe cases two filters may be cascaded by screwing them directly together. This will of course

    increase the insertion loss




Product Code


Insertion loss in pass-band Attenuation in stop-band





Frequency Value
DC – 782 MHz DC – ch 59 ≤ 4 dB


Frequency Value
791 – 796 MHz LTE downlink block A1 ≥ 15-25 dB
796 – 801 MHz LTE downlink block A2 ≥ 25 dB
801 – 811 MHz LTE downlink block B ≥ 25-30 dB
811 – 821 MHz LTE downlink block C ≥ 36-50 dB

832 – 862 MHz LTE uplink (all blocks)

≥ 50-52 dB





  1. For the purpose of this specification the LTE downlink band is split into three 10 MHz wide blocks designated A, B and C. Block A is further divided into two 5 MHz sub-blocks. The LTE e-EUTRAN air-interface specification allows for flexible transmissions of 5, 10 or 20 MHz bandwidth. Actual transmitted signal parameters will depend on the licences granted to particular network operators.

For more information on LTE please refer to our FAQ.


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