so ive been on HF for a few years now and honestly my SSB audio has always been kind of mediocre. people tell me im readable but never anything great, and i hear some guys on 20m who just sound absolutely crisp and full even on a marginal band. started wondering what they're doing differently.

my current setup is an IC-7300 and im just using the stock hand mic, talking pretty close to it. i know the 7300 has a bunch of audio processing built in but i havent really dug into it. someone at our club mentioned speech compression but also said you can overdo it and sound like garbage, which i believe because ive heard some pretty rough audio out there.

is it mostly the mic, or the radio settings, or just mic technique? or some combination of everything. genuinely not sure where to start poking around.

honestly the biggest thing most people overlook is mic gain and compression working together. on the 7300 specifically there's a tendency to crank the mic gain too high because the meters look good and then add compression on top of that and you end up with this splattery over-processed mess that sounds loud but not actually intelligible. what you want is mic gain set so youre hitting maybe 50-60% on the ALC with your normal speaking voice, no yelling, then bring compression up slowly until you hear it tightening things up without that pumping artifact.

also and i cannot stress this enough - mic technique is huge. keep a consistent distance, like 2-3 inches from a hand mic, dont turn your head away while talking. the stock hand mic on the 7300 isnt bad but its optimized for close talking and the proximity effect can muddy your low end if youre right on top of it. some guys swear by a headset with a boom mic for consistency alone regardless of the audio quality difference.

this is kind of tangential but i switched to a Heil mic a while back and yeah it made a difference but honestly not as big a difference as learning to actually ride the TX monitor. if your radio has a way to hear your own transmitted audio, use it. i was shocked how processed and weird i sounded before i started actually listening and adjusting. been on SSB probably 15 years and didnt really do that until maybe 3 years ago, felt dumb about it but whatever it worked.

one other thing - if youre running on a noisy power supply or theres RF getting into things you'll hear it in your audio even if it seems fine on receive. had a weird hum for months that i blamed on mic technique before i traced it back to a ground loop between the radio and the computer i had running nearby.