According to their facebook page (radiofree jax) on 3/31, "The on-air computer crashed and we are waiting on its replacement." And their last update on 4/5, "We may be down a little longer - we took some lightning damage from the storms this morning."
I could swear 105.3 and 105.7 don't run at full power when the 80's filler has been on I listened to Groovin' Oldies and Mix 105 back in the day, and the 105.3 signal was just fine on the Southside. 105.7 is flat out unlistenable around here, even though its estimated coverage map on a certain radio station locator site isn't that much different from WJXR--which sounds halfway decent all over town.