Too bad most people aren't aware of the FCC OTARD (Over-the-Air-Reception Devices) regulations.
http://www.fcc.gov/mb/facts/otard.html Interesting reading... The best part is that if an association says you can't do something, you can appeal to the FCC, and if they are violating the OTARD regs, the FCC has the power to preemptively strike down requirements they don't like. The burden of proof that a restriction is valid is on the home owner's association.
Cases are listed on the FCC site with their rulings against HOA's...
The big difference in a condo community vs. a single family home development is the "common/community property"... generally there's no way you can infringe on that, unlike a single home area, where I can erect an antenna on my roof, since I own it--if it's the only way I can reasonably receive a television OTA signal without incurring undue expense or other hardships, then there's not a damn thing any HOA can do... well, unless they can prove it's a safety issue.
So... maybe you can claim that you need a rooftop antenna to receive some digital tv signal, and then make sure the "special" antenna has a "whirly gig" thingy on it to "help" reception. So what if it also measures wind speed?
But seriously, sorry to say, you are screwed in many ways by being in a condo community--regulation wise...