I'm not sure how far east KOMO (1000) and KIRO (710) broadcast to the east. I suspect both protect 50,000 watt stations to the east in Chicago and NY, so I'm not sure you would ever be able to get them in Ohio.
In Oregon, there is a full-power station at 750 AM, but I beleive they also protect WSB in Atlanta and do not propogate that well to the East. The only other Oregon station is KPNW 1120, but they would also most likely be protecting KMOX.
Your best bets may be KFI (which I have received in the midwest) or KNBR in SF.
Hope that helps
Tom S