Any comments on the accuracy of the adjacent sectors on my map/notes ? It's been a few years since I checked that area so maybe a bit out of date.
ZOB02-ZOB07-ZOB47, do these sectors usually combine ? Is ZOB46 frequency 135.375 used very often ? Like this new ZID74 sector I think it was setup mostly for area coverage and is usually combined with ZOB45 ?
ZID78-ZID88, in the past when combined they seemed to use 120.575 as the primary, but now with frequency cross-coupling I suspect they just use both ? Same with ZID66-ZID76 and ZID79-ZID85 ?