Solid state transmitters produce frequency emissions which have to be removed by Bandpass Filters. COM-TECH Bandpass Filters are designed to meet all transmission Masks (DVB-T / DVB-T2, ATSC 1.0 / ATSC 3.0, ISDB-T, DAB, etc.).
They are also the main components of the Combiners. CL, FC, TF, TC, TS, HR, HE Series.
COM-TECH Bandpass Filters use several innovative and proprietary Designs, in order to meet the different transmission requirements, such as selectivity, regulation masks,and Adjacency Combination:
XLine: Extracted-Pole Elliptical-Response
DualCross: Double Cross-Coupling
COM-TECH Bandpass Filters are designed, engineered, and manufactured with cutting-edge technology in order to grant the maximum reliability and the most advanced performances: highest voltage safety margins, lowest insertion loss, maximum compactness, exceptional mechanical stability and durability.
Output Monitor Probe
Modular Connector System
SIR (VHF B.III Filters)
Hairpin(VHF B.I Filters)
EVA-Mode (VHF B.I and FM Filters)
COM-TECH Bandpass Filters can be provided with specific Options to increase maximum operating power. The resulting downsizing allows significant cost and space savings. Furthermore, they have been engineered to be conveniently integrated into Rack-Shelves.
Forced Air Cooling
COM-TECH offers several options for Retuning of its Bandpass Filters and Combiners, with different levels of autonomy for the Customer. Tuning Instructions and Tools are provided upon request. COM-TECH also offers customized Tuning Training Courses.
Remote Assisted Retuning
COM-TECH Bandpass Filters use mnemonic codes:
[Product Series: CL, FC…] [No. of Poles: 6, 8…] [Design: XLine, DualCross, Cross Coupling…] [Cavity Size: 80, 110…] [Operating Band: C, B, A, F]
Eg. CL6X50C: CL Series, 6-Pole, XLine, 50 mm, UHF
Eg. TS8D110B: TS Series, 8-Pole, DualCross, 110 mm, VHF B.III