Passband or Notch coaxial Cavity filters for VHF and UHF

Product Description

Passband and Notch coaxial cavity filters in quarter wave high “Q” for VHF and UHF communications and Amateur.   Externally made aluminum treated Surtec650 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 ).

Gallery

 FDB/50   FDB/130   FDB/530-C   FDN/50   FDN/130   FDN/530-C 
FREQ. RANGE (Mhz) 50-60 140-180 430-560 50-60 140-180 430-560
V.S.W.R. < 1.2:1 < 1.2:1 < 1.2:1 < 1.2:1 < 1.2:1 < 1.2:1
IMPEDANCE (Ohm) 50 50 50 50 50 50
BANDWIDTH ( -3db ) (Khz) 200 200 500
PASSBAND ATTENUATION (db) < 0.6 < 0.6 < 0.6 < 0.6 < 0.6 < 0.6
STOP-BAND ATTENUATION (db) > 25 > 25 > 25
CONNECTOR N N N N N N
POWER (W) 150 150 100 150 150 100
WEIGHT (Kg) 9.5 4.5 2.6 9.5 4.5 2.6
DIMENSIONS (cm) 115x12x12 70x12x12 32x12x12 115x12x12 70x12x12 32x12x12
FDB/130 – V.S.W.R.
FDB/530-C – V.S.W.R.
FDN/130 – V.S.W.R.
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