Notch high Q filter with BNC connectors. It allows the reduction of broadcasting frequencies from 88 to 108MHz. This version designed to be matched only to receivers, scanners or SDR allows low-loss reception of frequencies adjacent to the FM band such as the civil band at 78mhz and the 120MHz aerial. The Amphenol connectors, compared to most of the connectors in circulation, allows a strong anchoring to the radio and the antenna and ensures that the antenna does not turn with its weight on itself.
It can also be used in the RX part on radio amateur and civilian bridges both in voice and in digital APRS including.
Ideal for listening HF, 50 and 70mhz, Airband, NOAA, VHF, DAB, UHF, ADS-B etc...
All notch filters of our production are calibrated one by one in order to have the maximum attenuation exactly at 88,98 and 108 MHz with a maximum error of 3%.
High Q inductors designed for our filters
BNC Maschio 50 Ohm : Amphenol
BNC Femmina 50 Ohm : Amphenol
Structure of cylindrical shape made of anticorodal aluminium alloy 6000.
Anodic anodizing Black Color
Fiber laser Engraving
Attenuation at 88, 98 and 108 MHz => a 60dB
Amphenol BNC Connectors
HI-Q RF 250v Ceramic Capacitors
As you can see from the chart above thanks to manual calibration you can adjust the deep exactly to 88, 98 and 108 MHz and not as happens on the filters of all the competition where the filter responses is different from each other because there is no possibility of calibration.