ok so i just upgraded to general and im trying to figure out the 40 meter band. i know there's a difference between what the FCC says i can do and what the "band plan" is but honestly the more i read about it the more confused i get. like the license says i can operate from 7.125 to 7.300 but then i see guys doing SSB down around 7.100 and im not sure if thats a regional thing or if im missing something. also someone at my club mentioned not operating too close to the band edges and i dont really understand why that would matter if the frequency is technically legal. do i just go by what the FCC allocation says or is there something else i should be following

yeah this trips up a lot of newly minted generals so dont feel bad. the short version is the FCC part 97 rules are what you're legally required to follow, and for general on 40m SSB your lower limit is 7.125 MHz. anything below that on phone is tech/general restricted so you'd be out of bounds. the band plan is more of a gentlemens agreement put out by the ARRL that tries to keep different modes from stomping on each other, like keeping digital down low and SSB up higher, but its not law.

the band edge thing is actually pretty important though. your transmitted signal has bandwidth, so if you set your VFO to exactly 7.125 and your signal is 2.4 kHz wide, part of that signal is spilling below 7.125 into territory you're not supposed to be in. most people stay at least 3 kHz up from the edge to be safe. as for guys operating SSB around 7.100, they might be DX stations in other regions where the allocations are different, ITU regions and all that, 40m is kind of a mess internationally.

went through the exact same confusion when i got my general. what finally made it click for me was just downloading the ARRL band plan chart and keeping it open on my second monitor for a while. after a few weeks of operating you kind of just internalize it. the 7.100 thing is almost always europeans or south americans, their 40m phone allocation starts lower than ours so when you're working dx you'll hear them down there and it sounds weird if you dont know why.