Part of our FT-891: The Complete Guide.
The FT-891’s stock hand mic and default audio settings are usable but not great, and a handful of menu adjustments made a real difference in how I actually sound on the air.
Mic gain, checked with a real report
Default gain on the 891 runs a little hot, same story as most radios out of the box. I brought it down and got an actual signal report from someone I trust rather than trusting the ALC bar graph alone. The compact size of this radio means the mic gain range is a bit touchier to dial in than a bigger rig, small adjustments matter more here.
Compression, used sparingly
The built-in speech processor can help punch through noise, especially useful given the 891 tops out at 100W rather than a higher-power base rig’s headroom. I run light compression as the default and only bump it up when I’m specifically fighting marginal conditions, heavy compression flattens the audio in a way that gets fatiguing on longer contacts.
EQ and the stock mic’s limitations
The factory hand mic is fine but generic, and the EQ menu can only do so much to compensate for a mic element that isn’t especially tailored. I found a slight low-end cut and a small presence boost helped intelligibility without making the audio sound thin. If you upgrade to a better mic or headset down the line, expect to redo this step rather than assuming the same settings carry over.
How I actually dialed this in
- Set gain conservatively, then confirm with a real audio report, not just the ALC meter.
- Use light compression by default, increase it only for genuinely marginal conditions.
- Adjust EQ for whatever mic you’re actually using, the stock hand mic included.
- Recheck settings any time you swap microphones.
None of this takes long once you know what to listen for, and clean audio on a compact radio like this is one of the easiest ways to make sure the small size doesn’t come across as a small signal.

