Part of our The Icom IC-7300 Mark II: The Complete Guide.
The Mark II’s menu is deep enough that the factory defaults are really just a starting point. Here’s what I changed in the first couple weeks that actually stuck.
AGC and filter width
Default AGC decay is tuned for general listening, but I sped it up for SSB the same way I do on my other radios, it makes pileup work noticeably less fatiguing. On a crowded band I narrow the DSP filter width rather than leaving it wide, the improved RMDR on this radio means you can afford to get aggressive with filtering without losing much.
Fan and standby behavior
The Mark II already runs quieter than the original IC-7300 at idle, but I still adjusted the fan threshold slightly so it doesn’t spin up over minor warmth during a long digital mode session. Standby current draw is lower than the original too, which matters if you’re leaving the radio powered but idle for long stretches.
Touchscreen and scope defaults
The default spectrum scope span is a reasonable general setting, but I widened mine for band-hunting and narrow it back down when I’m actually working a pileup. I also bumped up waterfall contrast slightly, the default is tuned conservatively and a bit more contrast makes weak signals easier to spot at a glance.
Data port levels
Since the Mark II’s USB-C connection handles digital mode audio directly, the default input level assumes a fairly hot signal from your computer. I dropped mine down and confirmed against the ALC meter, the factory default was clipping slightly on FT8 until I adjusted it.
Menu changes I’d actually recommend
- Faster AGC decay for SSB, especially for pileups or contests.
- Narrower DSP filter width on crowded bands, the improved receiver can handle it.
- Adjust fan threshold if you’re running long digital mode sessions and want it quieter.
- Check data port input level against the ALC meter rather than trusting the default.
Take it slow
Same advice as always with a menu this deep, change one thing at a time and give it a few real sessions before deciding it’s actually an improvement.