Label: FDB/102-N
DESCRIPTION
The FDB/102-N is a double quarter-wavelength coaxial cavity filter with a high “Q” and variable coupling. Installed between the transmitter and antenna, it provides a spurious-free output signal and excellent insulation from other emissions. Made of aluminum with internal lines of copper and PTFE insulators, it comes in a 19” 3U rack version.
Label Italy designs and manufactures a comprehensive range of FM Broadcast Radio Cavity Filters. These bandpass filters are available for the entire FM operating band, with a wide choice of sizes in 2 or 3 pole versions, ensuring excellent spurious rejection. Fully tunable across the FM band (87.5 – 108 MHz), they are engineered for easy tuning with a standardized set of tools. All cavity filters feature built-in protection against antenna lightning discharges through a solid DC short circuit to ground on both the input and output couplings.
TECHNICAL DATA
| FDB/102-N | FDB/103-N | |
|---|---|---|
| Frequency Range (MHz) | 87.5 – 108 | 87.5 – 108 |
| Impedance (Ohm) | 50 | 50 |
| V.S.W.R. | < 1.15:1 | < 1.15:1 |
| Attenuation (dB) | < 0.5 | < 0.8 |
| Power (W) | 200 | 250 |
| Bandwidth (-3 dB) (kHz) | 500 – 800 | 500 – 800 |
| Connector | N | N |
| Weight (Kg) | 13 | 18 |
| Dimensions (cm) | 49 x 80 x 13 | 49 x 80 x 26 |
FEATURES
- Double Quarter-Wavelength Coaxial Cavity
- HIGH “Q” WITH VARIABLE COUPLING
- SPURIOUS-FREE OUTPUT SIGNAL
- PERFECT INSULATION FROM OTHER EMISSIONS
- Construction
- EXTERNAL BODY IN ALUMINUM
- INTERNAL LINES IN COPPER
- PTFE INSULATORS
- Design
- RACK VERSION 19” 3U
- Protection
- BUILT-IN PROTECTION AGAINST ANTENNA LIGHTNING DISCHARGES
- SOLID DC SHORT CIRCUIT TO GROUND ON INPUT AND OUTPUT COUPLINGS
