ok so i just upgraded from tech to general last month and im trying to figure out where i can actually operate on 40 meters. i looked at the arrl band plan and also the fcc part 97 stuff and honestly its just making my head spin a little. like i know generals get more privileges but the chart i printed out has all these little segments and some of them overlap or something and i dont know if the phone portion starts at 7.175 or 7.200 or what. and then someone at the club told me to stay away from the band edges which i get in theory but nobody explained why exactly. is it just because of splatter or is there some legal reason too. sorry if this is a dumb question im just trying to not accidentally transmit somewhere i shouldnt

not a dumb question at all, this stuff genuinely confuses a lot of new generals. so for 40m phone, as a general you can operate from 7.175 up to 7.300 MHz. below 7.175 is extra class only for phone. the 7.125-7.175 segment shows up in some charts as a kind of shared zone but for practical purposes just stay at or above 7.175 and you're fine for SSB.

as for band edges, the reason people warn you about them is a few things combined. your transmitted signal has sidebands that extend a few kHz beyond your dial frequency, so if you're running USB and you set your rig to 7.300 you're actually putting energy above that which is outside your allocation. the general rule most people follow is stay at least 3 kHz inside the edge to keep your signal fully within the band. its not that the fcc is going to come knocking immediately but its just good practice and technically you are responsible for keeping your entire signal within the limits, not just the carrier.

yeah what he said. also worth downloading the actual arrl band plan as a pdf and just taping it next to your radio for a while, i did that when i was starting out. one thing that tripped me up was that the band plan and the actual fcc allocations are slightly different things -- the band plan is kind of a gentlemans agreement about where to put certain modes and stuff like the digital segments, but the fcc part 97 is the actual legal limit of where your license class can transmit. so like you might see 7.040 listed for ft8 in the band plan but thats just where everybody agrees to congregate, not a law. anyway 40m is a great band once you get the hang of it, tons of activity especially in the evenings