Originally Posted by haleve
Do any of the feeds display the active frequency along with the description?
It would depend on the settings the feed provider has set, along with what type of scanner they are using. There are several models of scanners that are capable of providing "Alpha Tags". Within the broadcasting software, one would have to set the program to display the frequency being transmitted. (ScannerCast and RadioFeed both are capable of this) You can also use the "Contact Feed Provider" button on the page of the feed you're inquiring about, then ask if the provider is capable/willing to provide the active frequencies.
Hope this has helped you!