SMLRS Home Page

SMLRS (Southwest Missouri Linked Repeater System) is a permanently linked radio  network.  The vital purpose of SMLRS is to enable emergency services to communicate throughout the coverage area.

Up to date information about SMLRS operations, repeater status, and other current events can be found at https://smlrs.info/smlrs-news/.  Check this page before reporting any system operations problems.

SMLRS NEWS!!!!!

June 7, 2020: The SMLRS has added three new repeaters in the Eastern region of our coverage area to cover Central and South Central Missouri:

146.820 (-) PL 110.9 Hz in Rolla, MO

146.985 (-) PL 110.9 Hz in Willow Springs, MO

444.775 (+) PL 110.9 Hz in Bendavis, MO (~10 miles West / Southwest of Houston, MO)

The primary RF backbone link between Bendavis and Crane is still under construction, but the backup linking method which utilizes a dedicated T1 data circuit with cellular modem is operational and being tested allowing these three repeaters to be on the link system and operational.

All 3 repeater sites are located in hardened, climate-controlled shelters and have UPS battery backup power to keep the repeaters online until the site generator can provide power to the equipment. Motorola R56 grounding techniques were followed to protect equipment from lightening as best it can be protected and maximize system up time.

December 22, 2016: The SMLRS has a new repeater on the SMLRS system located in Warsaw, MO.

The repeater is on 147.075+ PL 127.3 Hz.  You can run full PL on this repeater, meaning you must encode a PL of 127.3 Hz and you can also use decode on your radio for the 127.3 Hz tone. The 147.075 repeater is linked to the SMLRS 100% of the time via an RF link to the Stockton Lake hub repeater, and runs on 100% battery power like the 145.270 in Nixa.

If you have questions or need to notify someone about repeater operation problems not addressed on the news page, email swmlrs@gmail.com.

In an emergency, normal local and wireless communications can be lost or saturated so that important messages cannot be sent or received.  SMLRS provides a broad area of coverage, with backup power supplies and links that can be used by trained amateur radio operators to provide needed communications.

Outside emergencies, the system is available to support wide-area communication needs, such as bicycle rides, running events and weekly nets.  Nets are vital to the SMLRS system because it helps us identify any system problems that may need to be monitored or addressed on a weekly basis. YOUR participation in these nets is CRITICAL in helping us maintain the SMLRS system. It is also available for all radio amateurs to use in normal VHF communication activities, including QSO’s.

The system has 11 radio repeaters:

  • a repeater centered near Granby (just Southeast of Joplin),
  • a repeater centered near Nevada,
  • two repeaters centered in Springfield
    • the 147.015 in Northeast Springfield
    • the 147.225 in Southwest Springfield
  • a repeater at Crane linking the Joplin and Springfield repeaters.
  • a repeater near Stockton Lake linking Nevada to the system & acting as a redundant hub repeater for the system
  • a repeater centered in Branson
  • a repeater centered in Warsaw
  • a repeater centered in Bendavis, West / Southwest of Houston, MO
  • a repeater centered in Rolla
  • a repeater centered in Willow Springs
Antenna at Crane Repeater
Antenna at Crane Repeater

Together, these repeaters cover the Region D ARES service area in Southwest Missouri as well as most of the Region G and Region I ARES service area and the Springfield National Weather Service severe weather coverage area

Because the repeaters are permanently linked, a transmission on any of the eleven repeaters is re-broadcast on all eleven repeaters.

In practical terms, transmissions within the network area will be heard from Coffeyville, KS to Van Buren, MO, and from Clinton, MO to Harrison, AR.

This website has two major divisions:

  • If you want information for Amateur Radio Operators, place your mouse on that menu choice above and click on one of the pages shown100_1042
  • If  you want information for Service Agencies, place your mouse on that menu choice above and click on one of the pages shown

 This is a computer modeled map of the linked repeater coverage for the Western half of the linked repeater system:

SMLRS Coverage Map 100614_Branson and Arcola Added