Yes, I recall the conversation we had. This time of year can experience troposphere ducting, and K factor changes which are more pronounced. Under normal conditions radio waves are refracted in atmosphere and will experience about a 15% greater radio horizon than the direct path. This is due to refraction in the atmosphere, and gives radio it's greater reach. Under certain conditions the stratosphere can segment and form ducts of different densities which will act like a wave-guide. This can cause low-loss propagation over hundreds of miles. Florida is ideal for this due to the weather patterns off both coasts, and can cause north-south ducts over hundreds of miles in the evening and early mornings. These ducts can enhance propagation at UHF and above. I've had interference on a 18 GHz radio system north of Orlando caused by a system south of Miami, and even light (same electromagnetic radiation) can be propagated over these ducts, case in point the superior mirage of ships "floating" over the water. It will come in, start fast and have great signal strengths, then fade quick and it's over. However in Florida, these can last for hours or even days. South Florida had their LTE in 700 MHz taken out due to a Dominican TV station for several days last year. This is no one's fault, as there's thousands of miles between the DR and south Florida.