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Central Iowa Spotter Repeaters



NWS offices around the country utilize various spotter networks for severe and other inclement weather verification and reporting. The various spotter networks are comprised of emergency management officials, law enforcement, fire fighters, EMS personnel, and road crews. We also utilize the general public with training taking place during the late winter and early spring as NWS personnel travel to various counties to provide training. A final group of spotters utilized by our NWS office are amateur radio operators.

Amateur Radio Operators (HAMS) are a vital link in the spotter and communication network used by the NWS during severe or otherwise inclement weather. Not only do they report what they see with their own eyes, but they can report what others see, and also provide communications to other NWS offices should normal communication modes fail. The following graphics depict single repeaters, linked repeater systems, or a combination thereof which we utilize often. New repeaters continue to be installed by dedicated and hard-working hams to expand their networks. We also continue to learn of and put into use these new systems as soon as possible. For now, we will not list 2 meter and 70 cm repeaters outside of our 51 county warning area (depicted by the purple outline), unless they also serve some of our counties. If you notice errors or omissions, know of new repeaters that need to be added, need to change your spotter address or phone number, or just have a SKYWARN/spotting question, drop us a line at DMX.Spotter@noaa.gov and we take care of your request ASAP. Note: This email address is not for sending severe weather reports, but instead is for administrative tasks. For severe weather reporting via the internet, please see eSpotter.

Keep in mind the maps depict approximate signal coverage with radio propagation characteristics, geography, equipment reliability, etc. all affecting coverage of a given repeater.

Here's a two page pdf file of the same information in a format that will print nicely on two pages or on the front and back of the same sheet of paper. Remember, this is for the NWS of Des Moines CWA.


Location Freq. PL
Sheldahl 147.075+ 114.8
Scranton 444.300+ 151.4
Casey-Menlo 146.865- 146.2
Williams 444.500+ 151.4
Mason City 146.760- 103.5
Chariton 146.835- 123.0
Ottumwa 444.850+ 100.0
Malcom 145.210- 146.2
Notes:  These repeaters are always linked together.  Additional repeaters, noted on the map and table immediately below, can be linked into this system on an as needed basis, such as during severe weather .
Central Iowa - Sheldahl Linked Repeater System image

Location Freq. PL
Atlantic 147.150+ 151.4
Ames 147.240+ none
Ames 147.375+ none
Arcadia 146.805- none
Audubon 147.120+ none
Avoca 147.255+ 151.4
Boone 146.850- none
Des Moines 146.985- none
Des Moines 146.940- 114.8
Des Moines 146.610- 114.8
Manilla 147.225+ none
Marshalltown 147.135+ 141.3
Mingo 146.670- none
Newton 147.030+ none
Oskaloosa 145.490- 146.2
Saylorville 145.395- none
Winterset 147.270+ 114.8
Note:  These repeaters can be linked in and out of the Sheldahl linked system as needed, or many of them can be contacted direct by SKYWARN net. control.  The graphic would have been too "busy" if range rings would have been placed on the map.
Miscellaneous Ham Repeater image

Location Freq. PL
Grimes 443.400+ 151.4
Laurel 444.800+ 151.4
Cedar Falls 444.650+ 136.5
Baxter 444.225+ 151.4
Newton 442.300+ 151.4
Afton 442.400+ 151.4
Chelsea 442.125+ 151.4
Malcom 442.325+ 151.4
Kelley 444.425+ 151.4
Marshalltown 444.525+ 151.4
Marengo 442.650+ 151.4
Greenfield 444.700+ 151.4
Oskaloosa 443.975+ 146.2
Bedford 443.700+ 141.3
Note:  The Malcom area has two repeaters on these linked system.  One is on this linked system (UHF) and the other is on the "Sheldahl" system.  The repeater on the Sheldahl system is on VHF though.
Grimes to Cedar Falls Linked Repeater System image

Location Freq. PL
Bedford 147.135+ 203.5
Des Moines 146.820- 203.5
Storm Lake 146.775- 203.5
Pella 145.170- 203.5
Waterloo 444.900+ 203.5
Moravia 444.475+ 203.5
Davenport 146.940- 203.5
Mason City 147.315+ 203.5
Note #1:  For local use only (no ICN access) on the Waterloo repeater, use a PL tone of 136.5.

Note #2:  For local use only of the Des Moines Hub, use a PL tone of 114.8.

Note #3:  For local use only of the Storm Lake repeater, use a PL tone of 110.9

Note #4:  For local use only of the Bedford repeater, use a PL tone of 127.3..

Note #5:  For local use only of the Davenport repeater, there is no PL tone.

Note #6:  For local use only of the Mason City repeater, use a PL tone of 103.5.

These repeaters are linked to the main Des Moines Hub via the Iowa Communications Network fiber optic system.  You must have the PL tone turned on to access the ICN Hub and the remote repeaters.

ICN Linked Repeater System image



The information listed above is from the NWS Des Moines website, located here.



Chris Bergeson



Published on: 2006-08-03 03:30:11 (3128 reads)


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