Broadcasting on 99.5 FM, KWSQ-LP is owned by KWSF Radio and simulcasts KWSS-LP 93.9 in Scottsdale.
The original construction permit specified operation on 106.7 MHz, but this was soon changed to 99.1 because of severe interference from KKMR on 106.5.
After a stint as KOWO-LP "Wow 99.1" from 2014 to 2015, the station relaunched as KQCX-LP in September 2015, then flipped again to alternative rock as "FX 99.1" on January 1, 2016.
Effective July 27, 2022, KBYE-LP was sold by original licensee San Tan Educational Media to KWSF Radio for $775.43, representing the value of the station's equipment.
On August 5, 2022, the station's call sign was changed again, this time to KWSF-LP; it returned to service as a simulcast of KWSS-LP on September 1.