There is one option slot for a filter in the FT-817. We have a selection of Collins filters mounted on our custom plug-in PC boards.

FT-817

Sort by: Product Price Default #705 500 Hz 455 kHz CW 7-pole... See details   #706 2500 Hz 455 kHz SSB 8-pole... See details #712 300 Hz 455 kHz CW 7-pole... See details   #717 2300 Hz 455 kHz SSB 10-pole... See details   #720 2000 Hz 455 kHz SSB 8-pole... See details #726 2900 Hz 455 kHz SSB 8-pole... See details