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 |