In NW Indiana, WYIN Gary Indiana has always been a challenge to get. They were much worse to get in the analog days on 56, that their signal couldn't be picked up clearly in the COL. For digital, they're on 17, but some people still can not get them. For those like m, who live in Gary Indiana, low power station WHNW-LD on channel 18 (same as their analog channel) interferes with WYIN at times. For analog, even aiming an antenna at their tower in unincorporated Lake County Indiana (Lake Dalecarlia) didn't help at getting their station (at least it didn't for me). For digital, I need a second antenna aimed at Lake Dalecarlia in order to keep the station locked in, or it goes in & out. It's a shame that they don't earn enough money in CPB funding, & pledge dollars to locate their antenna in Chicago, like they wanted to. Despite WTTW & WYCC's objections to WYIN locating in Chicago, the FCC denied those stations request to block WYIN from locating in Chicago, as they meet the programming requirements for their license, & would have had no problem keeping interference to a minimum with WVTV Milwaukee on channel 18. But the cost to lease space on a Chicago skyscraper is what's keeping WYIN from locating their antenna to Chicago. As a result of that, their signal willl always be difficult for people in Chicago's northern suburbs & in the city of Chicago, & for people who don't aim their antenna toward Lake Dalecarlia in South Lake County Indiana (regardless of what part of WYIN's broadcast area).
WJYS used to also be difficult to get in the analog days on channel 62. Due to being short-spaced with channels 60 & 66, WJYS could not locate their antenna in Chicago, & had to settle for locating their antenna in Tinley Park, IL (station licensed to Hammond, IN). They had a translator placed on the Sears Tower to cover Chicago & the northern suburbs (until they were forced to place a null toward Milwaukee, WI for WISN's digital signal, when it was later converted to Class A status). At least for me, I couldn't get them, even after pointing my antenna toward Tinley Park, IL. Their digital signal is on channel 36, & that is broadcasting on top of the Sears Tower, while the studios are still located in Tinley Park, IL. They had to wait until WMVT turned off their analog signal, before they could remove most of the null toward Milwaukee, & cover the northern suburbs. So they no longer have problems with people getting their station, since locating on top of the Sears Tower.
For both of these stations, I have always used an outdoor antenna that was optimized for both VHF & UHF. I used a combo antenna before, but now use seaparate VHF & UHF antennas.