JD4x4

@Lscott, Thanks for your help & the ref to the regs thread. @Jones, that little subtlety of TPO vs. ERP would have bit me if it was a snake, lol. Thanks! And I've got a lot to learn.

Thanks again Lscott. That WikiPedia list is better than the one found on hamradio.me, and the last place I would have looked, lol. In my downtime I also found that ecfr page and made a chart from there in a spreadsheet & printed it as a pdf. I found the wording vague though when it came to Part E and power. In §95.1763-"GMRS channels" under (a, b, & c) they all start with "Only mobile, hand-held portable, ... may transmit .." and under (d) it says "Only hand-held portable units may transmit on these 7 channels", so it looks like handhelds can use all of the channels. But, (of course there's a 'but') in §95.1767- "GMRS transmitting power limits" under (a) (1) they mention mobile as 50 watts but not specifically handhelds. Then their §95.303 Definitions say "Hand-held portable unit. A physically small mobile station ...". So between 1763 and the defs calling them a small mobile I think I'm going to interpret that a "small" mobile can go up to 50W on the 462 & 467 "Main Channels" (not that I'd want to hold that near my head!), unless I've missed something. Anyway, thanks again for your help (and patience). I'll attach my chart with the rules & defs in it. If anyone sees that it's bad logic, bad info, I'll remove it. FCC FRS & GMRS Freqs, Use, and Power.pdf

Thanks so much for he quick reply @Lscott. So (by all means correct me if I understand this wrong, which is likely, lol), the Upper 550 (467.5500 MHz) to Upper 725 (467.7250 MHz) which are typically GMRS Repeater Input channels are not considered either "Main" or "Interstitial". Is that correct? <Edited for clarity, succinctness?>

Not to hijack this thread (and I'm a 68 yo. GMRS newb trying to learn), but this is sort of a repeater question I think. I am setting up my 3 new BaoFeng GT-3TP Mk3's with CHIRP and this thought is coming to mind about the Upper GMRS (repeater) freqs- If you can go 50W on these channels, is that only for the actual repeater (ie. non-handheld unit) or can the handheld go above 5W? I think I may have answered my own question, but you see where I was going with that? I suppose I cant transmit 8W on the handhelds and call them repeaters ... ??