Designed for minimizing interference from adjacent channels and outside systems
- Temperature-compensated to ensure frequency stability
- High attenuation to minimize desense and interference from adjacent systems
- Silver-plated loops and tuning rods
57-45-04 Combline Filter/Preselector
Frequency Range: 450-470 MHz
Specify working frequency, bandwidth, power and isolation required
Description
The combline filters are designed for minimizing interference from adjacent channels and outside systems. They are available in a wide range of bandwiths and frequency splits. Used in front of a wideband receiver multicoupler, the preselectors narrow the passband to the desired bandwidth. Each filter is temperature-compensated for operation between -40ºC to +60ºC. Each filter has silver-plated loops and tuning rods.
Our preselectors are available in a wide range of frequency splits, bandwidth and cavity sizes.
• Temperature compensation: ensures frequency stability
• High attenuation: minimizes desense and interference from adjacent systems
Other preselectors are also available. They include comblines and our full line of cavity-based preselectors. Sizes range from the very compact 1” helical filter to the very selective 6.625” cavity preselector. Please contact a technical support technician for consultation.
Additional information
| Frequency Range, MHz | 450-470 |
|---|---|
| Type | Combline |
| Insertion Loss Bandwidth, dB | 3 |
| Pass Bandwidth, MHz | 4 |
| Return Loss, dB (VSWR) | 20 (1.22) |
| Typical Selectivity, dB @ MHz | 38 @ 5 |
| Temperature Range, ºC | -30 to +60 |
| Input Power, Watts | Rx only |
| Connectors, Antenna/Output | N-F/N-F |
| Finish | Black |
| Dimensions H x W x D, in (mm) | 5.25 x 19 x 4.5 (133 x 686 x 114) |
