Ah yes, the great synchronization transmitter experiment which was in Cypress or Katy back in the early 1980s. I don't remember the exact location, but I do remember it was on the northwest side. The morning KNUZ signed on that transmitter at full blast, they discovered what a mess they had created. Two transmitters operating at full blast. (Well, full blast as far as 1KW is concerned) The two signals were beating the excrement out of each other. They decided to operate it with 52 watts daytime and 400 watts at night. They did this because of the signal problems to the west and southwest of Houston.
For years and years and years, I mean over 30 years, they didn't seem to understand why the signal was so bad to the southwest. When the station was sold to SFX, it was discovered that many years ago, the management leased out the southwest end of the property on Ennis street at the transmitter site to a company which dumped old batteries.
Oh yes, the hunger and greed for moola had cost them dearly as the acid leaked from the batteries and ATE the groundwave system to the detriment of the signal. IDIOTS!
Now AM-1230, is practically useless, unless you program something unique to within loop 610 where the signal penetrates. Thinking 4701 Caroline at Blodgett here; the only other option is "dial 3 and lower the carrier." (The control was on the left side of the board with a rotary dial, like a telephone, which you lowered and raised power from 250 watts to 1000 watts, or simply cut it off.)