AOR ABF128 flygbands Filter

The ABF128 provides additional front‑end selectivity by attenuating strong out‑of‑band signals before they reach the receiver’s first mixer stage. This prevents front‑end saturation, resulting in less interference and noticeably cleaner reception.

Out‑of‑band attenuation:  • ~25 dB from 0.3–75 MHz • ~20 dB from 190–400 MHz
In‑band attenuation:  • Very low (~4 dB) thanks to excellent 2:1 VSWR

Ideal for both external antennas and direct connection under handheld whips

Connectivity

BNC female on the top
BNC male on the bottom
Simple inline installation between antenna and receiver

Important Note

This is not an amplifier—it does not boost signals. Instead, it improves overall reception quality by removing unwanted strong signals that can overload your receiver. Remove the ABF128 when monitoring frequencies outside the VHF airband, as it will significantly reduce signal strength on other bands.