COM-TECH designs and manufactures a comprehensive range of output Filters for Broadcast TV and Radio Transmitters.
COM-TECH Filters are available with a wide choice of cavity sizes, for low to high power applications, and with different number of poles, to match all masks and standards requirements (DVB-T, ATSC, ISDB-T, DAB, FM):

Cavity Size 20 to 220 mm 30 to 200 mm 60 to 300 mm 60 to 200 mm 80 to 220 mm
No. of Poles 5, 6, 7, 8-Pole 6, 8-Pole 6-Pole 6, 8-Pole 2, 3-Pole

COM-TECH Filters product codes are named with reference to Series, No. of Poles, Technique, Cavity Size, and Band:

  • Coding (Filters)


COM-TECH Filters make use of innovative and proprietary design techniques:

  • XLine: Extracted-Pole Elliptical Response. Available on CL Series Filters
  • DualCross: Double Cross Coupling. Available on FC, TC, TF Series Filters
  • SIR. Available on TS Series VHF B.III Filters
  • Hairpin. Available on HR Series VHF B.I Filters
  • EVA-Mode. Available on CL Series FM Filters and HE Series VHF B.I Filters


COM-TECH Filters share these main Features:

  • Full Band Tunability
  • Temperature Stabilization
  • DC Short
  • Output Monitor Probe
  • Modular Connector System
  • 10-Year Warranty


COM-TECH Filters can be provided with specific Options to efficiently reduce their over-temperature, and to consequently increase their maximum operating power. The resulting downsizing possibility allows significant cost and space savings:

  • Heat Sinks. Available for FC, TS, TC, TF Series Filters
  • Forced Air Cooling. Available for TC, TF Series Filters
  • Liquid Cooling. Available for TC, TF Series Filters

COM-TECH Filters have been engineered to be conveniently fit into Racks. COM-TECH can provide standard and customized solutions to integrate Filters, Combiners, Directional Couplers, Lowpass Filters, and other components into Racks:

  • Rack Shelf. Available for CL, FC Series Filters