15-70-21, 450-470 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||450-470 MHz, Vari-Notch Cavity Filter|
|Frequency Range||450-470 MHz|
|Minimum Separation - Pass to Notch||1 MHz|
|Frequency Separation||1 MHz
|Attenuation vs Pass to Notch||23 dB @ 1 MHz
32 dB @ 2 MHz
48 dB @ 3 MHz
|Power Rating||150 W|
|Cavity Length - Electrical||1/4λ|
|Temperature Range||-30 to +60 °C|
|Number of Cavities||1|
|Cavity Height||10.5" w / tuning rod extended, 13" max.|
|Shipping Weight||4 lbs.|