Well I am in New Wilmington, PA.
I have an indoor RCA amplified antenna(connected to amp'd splitter) connected to an LG LST-4200A.
I can receive these stations using this little cruddy set-up:
BEST(in no particular order):
KDKA/CBS: 49 miles away(according to www.antennaweb.org/
from my location). Comes in at about 1/2 strength(to a llittle less which is normal for the 4200A). No dropouts or breakups.
WFMJ/NBC: 14 miles away. No dropouts. This includes WCWB, which is on one of it's sub-channels
WYTV/ABC: 14 miles away. No dropouts.
WNEO/PBS: 31 miles away. No dropouts. Channel 45(BUT NO HD CHANNEL ON 45-1!! WHAT IS UP WITH THAT!!)
GOOD(an outdoor/roof mounted Antenna would solve these dropouts):
WPXI/NBC: 49 miles away. Get some occasional dropouts, depending on time of day, but for the most part works well. But I do get dropouts occasionally.
WPGH/FOX: 51 miles away. Again I do get occasional breakups/dropouts. Sometimes bad, sometimes good. But on the weekend in the afternoon(for NFL/MLB/Etc...) it works very well. Outdoor antenna would greatly improve this, but it is not bad for the set-up that I have, which is garbage.
I also receive KDKA, WPXI, WTAE/ABC(Pittsburgh), and WQED/PBS off of my cable line via Clear QAM. These come in perfect for the most part(Adelphia's KDKA, and WQED/PBS has breakups sometimes, but this is there fault. They are on the same channel, and I experience it on this HD channel only. WPXI/NBC, and WTAE/ABC, which are on a different channel, have NO such problems.
I only hope that once Adelphia get's taken over by either Comcast or Time Warner, they will ADD WPGH/FOX, UPN, and the WB to their HD channel line-up. Adelphia's got this damn bug up there ass with getting a contract from Sinclair communications to send these channels to there customers here in New Wilm, PA. This is a bitch.
But that is my set-up and what I receive. Since you are in Poland, you should be able to receive these stations digital signal.