[8] As an example of its effectiveness, engineer Wilmotte noted that at one point a telegram was sent from regulators in Washington asking why WFLA-WSUN was off the air, because an inspector located in Atlanta was not receiving the station when it employed the directional antenna.
In 1937, the joint ownership of WFLA-WSUN was severed, with the two stations continuing to operate on 620 kHz using a common transmitter, but separately licensed on a time-sharing basis.
[9] WSUN's transmitter site moved to straddling the west end of the Gandy Causeway with 501 ft (153 m) towers on concrete pilings in the Tampa Bay salt water in the early 1950s at 5 kW.
As late as the 1990s, the original tower bases remained in their field, Until 1974, WSUN offered a variety of programming including dramas, talk, music, and was an ABC affiliate.
The City of St. Petersburg eventually placed a channel 38 antenna on top of the north tower and a microwave reflector to deliver the programming to the transmitter building below.
Eventually, WSUN morphed into sports, becoming the flagship for the Tampa Bay Lightning, but dropped all talk programming by 1995, when it switched to a Standards music format.
[11] Paxson-owned Business talk-formatted WHNZ (on 570 kHz) and moved its calls and programming to 1250, while 570 was ultimately sold to Salem Broadcasting, who converted it to a Christian station and changed the callsign to WTWD (and later, WTBN).