{{Infobox radio station
| name = WJJO
| image =
| image_size =
| alt =
| caption =
| city = [[Watertown, Wisconsin]]
| area = Madison, WI
| branding =
| slogan = WJJO FM/HD
| frequency = 94.1 [[Megahertz|MHz]]
| translator =
| repeater =
| airdate = November 1, 1982
| last airdate =
| format = [[Album Rock]]
| language = English
| power =
| erp = 50 kW
| haat =
| class = B
| facility_id = 73142
| coordinates = {{coord|43.0589|-89.0625|type:landmark_region:US_source:FCC|display=inline,title}}
| callsign_meaning =
| former_callsigns =
| former_frequencies =
| affiliations =
| operator =
| owner =
| licensee = Mid-West Management, Inc
| sister_stations =
| webcast =
| website = [https://www.wjjo.com/] wjjo.com
}}

'''WJJO''' is an American ([[FM Broadcasting|FM]]) [[radio station]] licensed by the [[Federal Communications Commission|FCC]] to serve the community of [[Watertown, Wisconsin]] on the frequency of 94.1 [[Megahertz|MHz]] . The station license is assigned to Mid-West Management, Inc. WJJO-FM) airs a [[Album Rock]] format.

The [[FCC]] first licensed this station to begin operations on November 1, 1982 using callsign WMLW.<ref name=fcchistory>{{cite web|url=https://licensing.fcc.gov/cgi-bin/prod/cdbs/forms/prod/getimportletter_exh.cgi?import_letter_id=83460|publisher=Federal Communications Commission|title=FCC History card for WTTN-FM}}</ref>

The station has held the WJJO callsign since June 17, 1991.<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=73142&Callsign=WJJO |work=FCC Media Bureau CDBS Public Access Database}}</ref>
==Call signs used at this station==
{| class="wikitable"
|-
! As Of
! Call Sign
|-
|November 1, 1982|| WMLW ||
|-
|May 1, 1989|| WTFX ||
|-
|June 17, 1991|| WJJO ||
|}
==References==
{{reflist}}
==External links==
* [https://www.wjjo.com/ wjjo.com] Official WJJO FM Website
* FCC Public Inspection File online [https://publicfiles.fcc.gov/fm-profile/wjjo]
* {{ FM station data|WJJO}}
{{-}}
[[Category:Radio stations in Wisconsin]]
[[Category:Radio stations established in 1982]]
[[Category:1982 establishments in Wisconsin]]
[[Category: Radio stations in the United States]]
{{ Wisconsin-radio-station-stub}}