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"FDB" and Notch "FDN"

Pass-band or Notch coaxial cavity filters in quarter wave high "Q" for VHF and UHF. Externally made of Alodyne aluminum, with internal lines of silvered copper and PTFE insulators. Used both in transmission and reception, they are available in two versions: band-pass ( FDB ) or eliminate-band ( notch FDN ). UHF versions are temperature compensated, VHF versions only on request.

  • Fdb530C
  • Fdn-130
  • Fdn530C
   FDB/50   FDB/130   FDB/530-C   FDN/50   FDN/130   FDN/530-C 
FREQ. RANGE 50-60Mhz 140-180Mhz 430-560Mhz 50-60Mhz 140-180Mhz 430-560Mhz
V.S.W.R. < 1.2:1 < 1.2:1 < 1.2:1 < 1.2:1 < 1.2:1 < 1.2:1
IMPEDANCE 50 Ohm 50 Ohm 50 Ohm 50 Ohm 50 Ohm 50 Ohm
BANDWIDTH ( -3db )  200Khz 200Khz 500Khz - - -
PASS-BAND ATTENUATION < 0.6db < 0.6db < 0.6db < 0.5db < 0.5db < 0.5db
STOP-BAND ATTENUATION  - - - > 20 db > 20 db > 20 db
CONNECTOR N N N N N N
POWER 150W 150W  100W 150W  150W  100W
WEIGHT 9.5 Kg 4.5 Kg 2.6 Kg 9.5 Kg 4.5 Kg 2.6 Kg
DIMENSIONS 1150x120x120 mm  700x120x120 mm  320x120x120 mm  1150x120x120 mm  700x120x120 mm  320x120x120 mm 
GRAPHIC 1 - Link Link - Link Link
GRAPHIC 2 - Link Link - - Link