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Band III TV Bandpass Filters

Rev : 01.1 | Rev date : 23 May 2017
RFS bandpass filters are primarily used as part of multi-channel combiner facilities but can also be used to eliminate spurious emissions and increase isolation between co-sited services.


  • Natural convection cooling for all power levels
  • Can be retuned to any channel
  • Vertical entry and exit
  • Invar temperature compensation
  • 4 and 6 pole versions standard

Showing 8PX180C filter

Technical features

General Specifications

Product LineFilters
Product TypeBand III VHF TV Bandpass Filter

Electrical Specifications

Frequency Range (tuneable) MHz174 - 230
Input Power (maximum), kW AveragekW15
Input Channel Bandwidth MHz6 to 8 adjustable. Note #1
Insertion Loss at Channel Centre Frequency dB0.1
Input Return Loss dB> 30 Note #1
Filter Selectivity dB< 0.1 at fc ± 3.8 MHz
> 33 at fc ± 12 MHz
Impedance Ω50

Testing and Environmental

Temperature Range°C(°F)0 to 40 (32 to 104 )

External Document Links


  • Note 1 8MHz wide channel data shown, can be adjusted for other bandwidths.
  • Note 2 The RFS R series provides a "mix and match" interface to 50 ohm EIA/IEC standard connectors.