so ive had my 7300 for about three years now and it was always a solid radio but i kept reading about the TCXO upgrade and the various filter mods people do and finally just decided to go for it over the winter. pulled the covers off and installed the SC-7300 TCXO option board first which wasnt too bad, just a few connectors and some careful work around the main board. the frequency stability improvement is real and not just placebo, i was skeptical but doing some weak signal work on 40m at night you can really tell the difference when you're not constantly nudging the dial.

after that i went down a bit of a rabbit hole honestly. did the internal fan mod where you swap the stock fan for a quieter noctua-style unit and rewire it to run at lower voltage most of the time. runs so much cooler temp-wise in the shack now and i dont have to turn up the monitor speakers every time i key up. also did the barefoot audio mod that's been floating around the groups.io for a while, just a couple resistors on the TX audio path and it really does open up the transmitted audio a bit, my buddy in michigan said i sounded noticeably better before i even told him i changed anything.

anyone else gone down this road with their 7300 or other radios? curious what mods people actually found worthwhile vs the ones that were more hype than anything

yeah the TCXO is the one mod i'd tell anyone to do first on that radio, no question. i did mine maybe 18 months ago and it made a genuine difference for ft8 and other digital modes where your frequency accuracy actually matters. never bothered with the fan swap though, mine doesnt seem that loud to me but i also run a fairly noisy shack so maybe i just dont notice.

the audio mods i'm more mixed on. tried something similar on my 7600 years ago and ended up reverting it because i felt like i was clipping on peaks in a weird way. probably did something slightly wrong but i got gun shy about messing with TX audio after that. if yours is working and people are noticing a real improvement then you did it right i guess.

this is kind of what im worried about with my own 7300, i want to do the TCXO but i've never really done internal radio mods before, just antenna stuff and external accessories. how difficult is the TCXO install on a scale of like... replacing a car stereo to something that requires actual electronics experience? i can solder decent enough but i dont want to brick a radio i rely on for nets