RAILROAD RADIO LISTENING: SOUTH-CENTRAL WISCONSIN AND NORTH-CENTRAL ILLINOIS ============================================================================ Published: March 26, 2025 Author: Daniel Conderman Context: Recovered Conderman.Group regional railfan guide, centered on Edgerton Original URL: https://conderman.group/2025/03/railroad-radio-listening-guide-south-central-wisconsin-north-central-illinois/ Archival note: Channel assignments and operating practices change. This guide preserves a March 2025 snapshot; verify current information. Receive only. Never transmit on railroad channels, and observe trains from public property. Most United States railroad voice traffic uses VHF channels around 160--161 MHz, known as the AAR band. A scanner or receive-capable dual-band handheld can hear crews, dispatchers, yards, maintenance workers and automated defect detectors. Program channels simplex, without a repeater offset; a receive tone usually is not required. Moderate squelch helps preserve weak calls, and a VHF-optimized antenna often matters more than the radio itself. REGIONAL CHANNELS ----------------- Union Pacific 160.890 AAR 52 Geneva Sub road, Chicago--Clinton via Rochelle 161.040 AAR 62 Geneva Sub west of Rochelle / Adams territory 160.485 AAR 25 Milwaukee Sub road 161.310 AAR 80 Harvard Sub, Chicago--Harvard--Janesville 160.470 AAR 24 Adams Sub 161.220 AAR 74 Janesville and other yard use 161.265 AAR 77 Butler Yard 160.995 AAR 59 Alternate maintenance or yard use BNSF Railway 161.160 AAR 70 Aurora Sub road 160.695 AAR 39 Aurora Sub alternate/yard use 160.875 AAR 51 Rochelle secondary/yard use Canadian National 160.920 AAR 54 Waukesha Sub, one side of split operation 161.295 AAR 79 Waukesha Sub, other side of split operation 160.530 AAR 28 Wisconsin Division road/secondary use 161.280 AAR 78 Illinois road use Canadian Pacific / CPKC 160.770 AAR 44 C&M / Milwaukee-area main line 161.370 AAR 85 Watertown and sometimes M&P subdivisions 161.520 AAR 94 Tomah Sub 160.725 AAR 41 Muskego Yard 161.430 AAR 88 Milwaukee yardmaster/local operations 161.485 AAR 91 Maintenance/engineering Wisconsin & Southern 160.575 AAR 31 System-wide road channel 161.145 AAR 69 Janesville yard/secondary 160.305 AAR 13 Maintenance or branch-line use Amtrak generally uses its host railroad's channel. Metra's UP Northwest Line was associated in the source with 160.800 and, in some segments, 161.040 MHz. Industrial switchers may use their host railroad's channel or business-band frequencies around 452--457 or 464--465 MHz. WHAT YOU WILL HEAR ------------------ The dispatcher controls train movements across a territory. Road crews often identify by the lead locomotive, such as "UP 7423 north." Track warrants and Form D authorities grant permission to occupy main track. A siding is a track where trains can meet or pass; a spur serves a customer; a wye is a triangular track arrangement used to turn equipment. To spot a car is to place it at a specific location, while making a joint means coupling equipment. Maintenance-of-way crews request "track and time" to work. Yardmasters coordinate switching. Automated defect detectors report axle counts and such conditions as hot bearings, often ending with "no defects." Dispatcher base stations are powerful and remotely located, so it is common to hear the dispatcher without hearing the more distant train. Main-line voice is usually simplex rather than repeated. PLACES TO LISTEN AND WATCH -------------------------- * Janesville: Wisconsin & Southern and Union Pacific. Try WSOR 160.575 and 161.145, plus UP yard 161.220. * Duplainville near Pewaukee: Canadian National crosses CPKC. Try CN 160.920 and 161.295, and CPKC 161.370 or 160.770. * Rochelle, Illinois: the UP Geneva and BNSF Aurora subdivisions cross at a public railfan park. Try 160.890, 161.040 and 161.160. * Milton: Wisconsin & Southern and UP cross. Start with WSOR 160.575 and UP 160.485 or 161.310. * Milwaukee: CPKC on 160.770/161.370 and UP near Butler on 160.485; Butler Yard uses 161.265. * Madison: Wisconsin & Southern local freight on 160.575 and occasional CPKC movements on 161.370. * Columbus: CPKC and Amtrak on 161.520 or 161.370. * Harvard, Illinois: Metra's UP Northwest terminus and occasional UP freight on 161.310. PRACTICAL TIPS -------------- Lock out transmit or disable the push-to-talk button on every railroad memory. Keep a short scan list for the busiest nearby lines; a radio scanning dozens of quiet channels may skip brief calls. Higher, open locations improve reception, but stay off railroad property and away from the track. Use an earpiece where ambient noise is high, keep a log of train IDs and times, and consult current regional references when a subdivision appears to have changed channels. If the dispatcher is loud but trains are absent, the train radios may simply be out of range. Data bursts may come from end-of-train or positive-train-control equipment rather than voice. Never let scanning distract from driving, and remember that trains can approach more quietly and quickly than expected.