{{Infobox radio station
| name = KTRS
| image =
| image_size =
| alt =
| caption =
| city = [[St Louis, Missouri]]
| area = St. Louis, MO
| branding =
| slogan = The Big 550 AM
| frequency = 550 [[kilohertz|kHz]]
| translator =
| repeater =
| airdate = March 14, 1922
| last airdate =
| format = [[Local Full Service]]
| language = English
| power =
| erp = 5 kW daytime
5 kW night
| haat =
| class = B
| facility_id = 20359
| coordinates = {{coord|38.6625|-90.1286|type:landmark_region:US_source:FCC|display=inline,title}}
| callsign_meaning =
| former_callsigns =
| former_frequencies =
| affiliations =
| operator =
| owner =
| licensee = Ktrs-Am License, LLC
| sister_stations =
| webcast =
| website = [https://ktrs.com/] ktrs.com
}}

'''KTRS''' is an American ([[AM Broadcasting|AM]]) [[radio station]] licensed by the [[Federal Communications Commission|FCC]] to serve the community of [[St Louis, Missouri]] on the frequency of 550 [[kilohertz|kHz]]. The station license is assigned to Ktrs-Am License, LLC. KTRS-AM) airs a [[Local Full Service]] format.

The [[FCC]] first licensed this station to begin operations on March 14, 1922 using callsign KSD.<ref name=fcchistory>{{cite web|url=https://licensing.fcc.gov/cgi-bin/prod/cdbs/forms/prod/getimportletter_exh.cgi?import_letter_id=44532|publisher=Federal Communications Commission|title=FCC History card for KSD}}</ref>

The station has held the KTRS callsign since March 10, 1997.<ref name="fcccsh">{{cite web |title=Call Sign History|url= http://licensing.fcc.gov/cgi-bin/ws.exe/prod/cdbs/pubacc/prod/call_hist.pl?Facility_id=20359&Callsign=KTRS |work=FCC Media Bureau CDBS Public Access Database}}</ref>
==FM Translator==
{| class="wikitable"
|-
! Call Sign
! City, State
! Frequency
|-
| K291CW || [[ St Louis, MO]] ||align=right| 106.1
|}
==Stations that have used the KTRS CallSign==
{| class="wikitable"
|-
! Current Call Sign
! City, State
! Frequency
|-
| [[KWYY]] || [[ Midwest, WY]] ||align=right| 95.5 MHz
|}
==Call signs used at this station==
{| class="wikitable"
|-
! As Of
! Call Sign
|-
||| KSD ||
|-
|March 19, 1984|| KUSA ||
|-
|October 15, 1993|| KSD ||
|-
|March 10, 1997|| KTRS ||
|}
==References==
{{reflist}}
==External links==
* [https://ktrs.com/ ktrs.com] Official KTRS AM Website
* FCC Public Inspection File online [https://publicfiles.fcc.gov/am-profile/ktrs]
* {{ AM station data|KTRS}}
{{-}}
[[Category:Radio stations in Missouri]]
[[Category:Radio stations established in 1922]]
[[Category:1922 establishments in Missouri]]
[[Category: Radio stations in the United States]]
{{ Missouri-radio-station-stub}}