- The BPF 3/3 is a 3-helical resonator band-pass filter with aperture-coupling between the resonators.
- This filter can be used as a preselector to protect a receiver against interference from transmissions out of the passband, or it can be used to reduce spurious output from a transmitter with up to 50 W output power.
- The filter can be tuned within the entire 112 - 136 MHz band. It has very small dimensions owing to the use of helical resonators. Careful design and choice of materials ensure reliable operation over a wide temperature range.
- The housing is made of extruded aluminium, the chassis of steel, and teflon insulation has been used in the coaxial cables and in the connectors.
- BPF 3/3 is coated with black vinyl to prevent corrosion.
Description
Specifications
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Diagram and Mounting
TYPICAL RESPONSE CURVES
Ordering Designations
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| BPF 3/3 N(f) | 200000853 |
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