BPF 70/4-HX
Band-Pass Filter for the 450 MHz Band
Description
- The BPF 70/4-HX is a 4 helical resonator band-pass filter with aperture coupling between the resonators.
- This filter can be used as a preselector to protect a receiver from interference from transmitters outside the band-pass limits.
- When installed in the output of a transmitter, the BPF 70/4-HX reduces spurious signals.
- The BPF 70/4-HX is adjustable in a low and high version over the frequency range 380 – 440 MHz and 430 – 470 MHz.
- Very compact due to use of helical resonators.
- The careful choice of materials, ensures the filter will function reliably over a wide temperature range.
- Extruded aluminium sections, steel racks and coax cables and connectors with teflon insulation ensure good mechanical strength.
- The filter is black vinyl coated to prevent corrosion.