The replacement of the towers, actually the rebuilding of the entire transmitter site was planned at least a year before the break up of Pfaltzgraf was annnounced. Nothing at all to do with Cumulus.
At that time Susquehanna Real Estate decided to build the office strip which is now there.
So we had to move from the building where WSBA started in 1942.
As to the towers, they were all replaced. All new feed lines. The phasor moved to the new building.
Before the project was begun an examination of the ground radials showed no need of replacement. Also several points were measured and compared to the 1961 proof of performance with little change within ten miles.
However, at my insistance after finding the 1983 project had the only ground running between the towers and the transmitter building to be a 1/4" wire, we installed 4" copper strap from each tower to the transmitter building. Once on the air from the new building, with the new lines and grounding I noticed a considerable improvement in the signal out at a distance (Havre de Grace, Md in fact). Not much of a change with the new towers though.
At the time I chose to leave, now almost 2 1/2 years ago, we were beginning the work of combining 1440 onto the 910 tower 2. Problems getting it to work kept the station on NON D until sometime earlier this year.
What has been done since my departure I don't know.
As to the insinuatiuon in a previous post that I was inept, I can show you the monitor point measurements from my time there indicating the correct power and pattern.