Showing posts with label FT991 change the roofing filter. Show all posts
Showing posts with label FT991 change the roofing filter. Show all posts

FT991 change the roofing filter

How do I change the roofing filter from 15kHz to 3kHz?

Cause/Symptom:
How do I change the roofing filter from 15kHz to 3kHz?

Solution:
The FT-991 roofing filter uses the 15 kHz filter on AM/FM/C4FM modes. All the other modes use the 3 KHz filter automatically. There is no manual selection possible.