15-88-12, 890-960 MHz, Vari-Notch Cavity Filter
The Vari-Notch® design passes a relatively narrow band of frequencies and rejects (notches out) a relatively wide frequency band. Equivalent to a combination series-tuned and parallel-tuned circuit, this filter has a greater notch depth than the Series- Notch® design. The notch depth is adjustable but varies with passband insertion loss (0.3dB or 0.6dB typical) and the difference between pass and notch frequencies. Vari-Notch® is ideal for moderately close to wide separations (400 KHz and greater) in UHF applications.
- Various Low-Loss High-Rejection Models to choose from.
- All Loop Plate/connector assemblies are silver-or Alballoy®-plated for low IM.
- Welded cavity construction and silver-plated tunable probe and loops give superior pass and reject characteristics.
All cavity types mentioned above may be cascaded to achieve an arithmetic sum of individual filter attenuation. Up to 6 dB of additional attenuation can be achieved when the proper length of cable is used to interconnect the cavities. (This additional 6 dB does not occur in the filter passband but only at frequencies where moderate to high attenuation occurs.) A TX RX system specialist can assist you in ordering the proper length of interconnecting cable for your frequencies.
|Item Name||890-960 MHz, Vari-Notch Cavity Filter|
|Frequency Range||890-960 MHz|
|Minimum Separation - Pass to Notch||400 kHz|
|Frequency Separation||500 kHz
|Attenuation vs Pass to Notch||50 dB @ 500 kHz
70 dB @ 1 MHz
86 dB @ 2 MHz
96 dB @ 10 MHz
|Power Rating||300 W|
|Cavity Length - Electrical||3/4λ|
|Temperature Range||-30 to +60 °C|
|Number of Cavities||2|
|Cavity Height||13" w/ tuning rod extended, 19" max.|
|Shipping Weight||18 lbs.|