Wirelessly posted (Mozilla/5.0 (X11; Linux i686; U; en-US) Gecko/20081217 Vision-Browser/8.1 301x200 LG VN530)
I think 161.205 is assigned for use by railroad police. I believe it's simplex, not repeated, so you'll have to be close by to hear it, *IF* it's used in your area at all. Otherwise, search the railroad band, 160.215-161.565.
Railroad Police in SoCal rarely use radios anymore, they use Nextel. Once in a while you will hear them on the CHP UHF system 460.375/460.450 when they need help. For actual rail freqs there are too many to list here, literally. Its best to use the service scan feature on your radio.