VHF BI/BIII Filters (analog & digital)

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All the filters are VHF band tunable and natural convection cooled. Hundreds of stations use either Electrolink notch filters or Electrolink band pass filters. The fully adjustable input and output coupling provides superior tuning and performance all over the entire VHF band. The notch filters use an all-copper construction providing very low loss with very high notch depth. The bandpass filters use an aluminium construction with copper resonator for stable high power performance. The input power goes up to 10kW (BI) and 20kW (BIII).


  • Flexible and compact
  • Light alloy and brass construction
  • Temperature stabilised
  • Square cavity at high mechanical stability
  • Retunable
  • Thermic stabilization carried out with INVAR
  • Mounted in any position
  • Natural convection cooling
  • Fine tuning
  • Silver superficial treatments and outer painting

Technical Features:

IN/OUT Impedance 50OHM
Frequency Range VHF BI 54MHz – 88MHz
Frequency Range VHF BIII 170MHz – 240MHz
Input Power VHF BI
up to 10kW
Input Power VHF BIII up to 20kW
Insertion Loss Depending on models
Return Loss >27dB
Bandwidth 6MHz – 7MHz –8MHz
Temperature Range 30ºC to +45ºC