Signal quality question

So, this morning when I came into work, the flourescent lights were off (I always like that), and my iPhone had 4 bars of signal quality sitting in a spot on my desk and was on the edge network...
An hour later, I came back, and my phone had 1 bar of signal, and no edge network. What was different? The ligths were on...
Can flourescent lights interfere with signal quality? Of course I know there is all kinds of 60Hz EMI that is going on...and as much as I would like to flip the lights on and off all day to test this theory, I don't think my collegues would appreciate it.

I too have been having VERY strange signal quality issues.
I can be sitting in a chair in my house getting full signal
strength and surfing the web when all of a sudden the signal
goes to one bar. On some occasions I will loose my Edge indicator (the E) and an error message will pop up saying I lost Edge data. This has happened plenty of times while just sitting still. I was thinking that this behavior had to do with the cell site I was in at the time, but perhaps there is more to this. Anyone else have this strange issue?

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