Cavity Filters VHF – UHF

Coaxial Cavity Filters Pass-band and Notch, for VHF and UHF

Pass-band or Notch coaxial cavity filters in quarter wave high “Q” for VHF and UHF communications and Amateur.   Externally made aluminum treated Alodyne 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 stop-band  notch ( FDN ). UHF versions are temperature compensated, VHF versions only on request.

Technical Data

   FDB/50   FDB/130   FDB/530-C   FDN/50   FDN/130   FDN/530-C 
BAND 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
ATTENUATION
< 0.6db < 0.6db < 0.6db < 0.5db < 0.5db < 0.5db
ISOLATION > 25 db > 25 db > 25 db
CONNECTORS N N N N N N
POWER 100W 100W 100W 100W 100W 100W
WEIGHT 9.5 Kg 4.5 Kg 2.6 Kg 9.5 Kg 4.5 Kg 2.6 Kg
DIMENSIONS (cm) 115x12x12 70x12x12 32x12x12 115x12x12 70x12x12 32x12x12

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