Icom IC-R9500
Roofing Filters

The Icom R9500 has five independent roofing filters (240, 50, 15, 6 and 3kHz) for improved selectivity. In very crowded RF spectrum conditions, it is extremely important to protect against strong in-band signals. The 3kHz roofing filter provides a 130dB (approx.)* blocking dynamic range. * At 15MHz reception, with 5kHz separation signals.