OK. Now is there any wireless security on the wireless router? Is there MAC address filtering on the wireless router? What wireless frequency (a, b g, or n) is the wireless router running?
The $ sign is an old trick on bad WEP programming that some old wireless third party routers used (they have no idea on how to use open standard wireless standards). So OS X (that uses standard TCP/IP standards) users had to put that symbol in front of WEP wireless broadcasts to get onto those WEP routers. This is an OLD WEP wireless trick OS X users hard to use in WEP days.
Mac Pro Dual 2.8 Quad (2nd gen), 14G Ram, Two DVD-RW Drives, OS X 10.9
2006 Mac Book Pro 2.16 (first Gen) OS X 10.7.5
2TB Time Capsule, 2 TB
32G iPhone 4S Black, iPad (3rd Gen) 32G Black