WDER explained

WDER (1320 AM) and WDER-FM (92.1 FM) are radio stations broadcasting a Christian radio format. They are the flagship stations of the "Life Changing Radio" network. WDER AM is licensed to Derry, New Hampshire, and WDER-FM is licensed to Peterborough, New Hampshire. The stations are owned by Blount Communications, Inc. of NH and feature programming from Salem Radio Network.^{[3] [4]}

In 2012, Blount Communications purchased 92.1 FM, then WFEX, from Phoenix Media/Communications Group, and changed the call letters to WDER-FM, providing WDER AM with a sister station on the FM band to extend its outreach. Prior to the purchase, WFEX had served as a simulcast of WFNX (now WBWL) in Boston.^[5]

Notes and References

1. Book: Broadcasting & Cable Yearbook 1999. 1999. D-280. March 8, 2015.
2. Web site: NHAB Alumni: John Scott. New Hampshire Association of Broadcasters. https://web.archive.org/web/20070628124427/http://www.nhab.org/alumni/scott.html. June 28, 2007. July 14, 2004.
3. Web site: WDER Facility Record . United States Federal Communications Commission, audio division .
4. Web site: WDER-FM Facility Record . United States Federal Communications Commission, audio division .
5. http://www.nashuatelegraph.com/business/961233-192/wfnxs-nh-side-92.1-fm-bought-by.html WFNX’s NH side, 92.1 FM, bought by Christian radio station WDER in Derry