An omnidirectional antenna (heck, even an indoor one) should work fine for WICD, WCIA, WILL, and WCCU. As for the Decatur stations and the low power stations in Champaign, a directional antenna would be best, but you could try an omdirectional antenna with a good return policy. A good indoor antenna might work for Decatur, but if you go that route, be sure you get a good return policy. As for Springfield, Bloomington/Peoria, and other out of market signals, a good directional, external would be necessary.
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