I used arc300 with my pro-164, but im using win500 with my pro-106. I think arc is easier to work with but i found a bug in arc500 and dont care much for it now. Whichever one floats your boat i guess.
Press tune on the scanner and type in some of those frequencies that you wish to recieve just to see if you get voice on it. You will hear some digital sounding noise on the control channel, that is ok, just type in one of the others and wait to see if you get voice.
try baytown
Texas Wide Area Radio Network (TxWARN) Motorola Trunking System, Metro Houston area, Texas - Scanner Frequencies
851.55000, 851.92500, 851.95000, 852.35000, 852.37500, 852.87500, 852.9500, 853.2250, 853.2500, 853.6500. You will see the talkgroup number come up if the voice comes up.
851.1000 and/or 853.0500 are the control channels.