so ive been doing contests semi-seriously for maybe 3 years now, usually single op on one radio, and i keep reading about SO2R and how guys are running 2 radios simultaneously to keep their rate up while searching for mults on the second radio. sounds great in theory but every time i try to wrap my head around the actual setup it feels like a part time job just to get the station ready before the contest even starts.

my current setup is an IC-7300 and i just picked up a used TS-590SG, so technically i have two radios now. but the interlocking, the antenna switching, the audio routing... like i dont even know where to start. does anyone actually do SO2R with modest station equipment or is this really just for the guys with dedicated shacks and stacks of yagis? also wondering if the rate improvement is even noticeable if youre not already pulling 150+ QSOs/hr on a single radio.

would love to hear from people who made the jump and whether it was actually worth it or just a rabbit hole

honest answer — at your rate level, SO2R is probably going to hurt more than help for a while. the mental overhead is real. youre essentially running two pile-ups in your head at once and if your SO1R game isnt pretty automatic already, adding a second radio just introduces more ways to make mistakes and miss QSOs on both bands simultaneously.

that said the actual technical setup doesnt have to be as complicated as people make it sound. the biggest thing you need to sort out before anything else is transmitter keying interlocking so you physically cannot key both radios at the same time — that will cause you problems real fast if you skip it. YCCC SO2R box or a homebrew relay setup both work, lots of guys use the cheap two-radio interlocking boards you can find on QRZ classifieds. the 7300 and 590SG are both fine radios for this, no issues there.

for audio i just run each radio into a separate ear of my headphones, left ear one radio right ear the other. takes a few contests to get used to but you stop noticing after a while. N1MM+ has decent SO2R support built in, worth reading their wiki on it before you dive in hardware first.

i'd say run a full contest SO1R first and focus on getting your rate smooth and consistent. once a 100/hr hour feels boring, then start messing with the second radio.

yeah the interlocking thing tripped me up for longer than i want to admit. ran my first SO2R attempt at FD a couple years back and managed to key both radios into the same antenna for about 30 seconds before i realized what was happening. nothing blew up but i got lucky. do the interlocking first, seriously, everything else is just software config.

one thing nobody really mentions — band conditions during the actual contest matter a lot for whether SO2R pays off. if 15m is dead and 40m is wall to wall, having a second radio parked on 15m doing nothing is just noise in your ear. the real benefit is when you can run on one band and hunt mults on another thats actually active. so in something like CQ WW when multiple bands are open it makes way more sense than a domestic sprint where everyones crammed onto like two bands anyway.