Telos’ invention of AoIP almost 15 years ago has brought with it some amazing changes to broadcast engineering. In addition to simplified installation and the end of punching down long wiring runs, AoIP has brought a new look at the STL, or Studio-Transmitter Link.

Fans of public broadcasting outlets PBS and NPR living in southwestern Florida are served by WGCU, where the TV-FM public broadcaster has operated from the campus of Florida Gulf Coast University in Fort Myers for two decades. The station's Director of Engineering, Kevin Trueblood, has likewise been in the broadcast industry for 20 years, though only the last two of those years have been spent at WGCU.

In late 2015, I was examining the expiring contracts for many of our legacy telco services. As I did, it quickly became apparent that we could do much better, both in terms of cost savings and quality.

CBS Radio Houston has a somewhat unique situation, in that all four of our FMs are co-located at two transmitter sites. The main site for the FMs is the Senior Road Tower, and our aux is an American Tower site nearby. In the past, both sites were linked to the studios via digital 950 MHz STLs and multiple T1s, with the 950 MHz links serving as mains and the T1 links serving as backup.  As you might expect, data for things like telemetry and HD Radio rode on timeslots in our T1 frames that weren’t being used for audio transport.

With its beginnings on the University of Northern Colorado campus in 1967 as KCBL, 91.5 KUNC serves residents of Northern Colorado with a unique blend of locally-produced news, music, and other popular public radio programming. Now owned and operated by Community Radio for Northern Colorado, the group has grown to a network of over 14 stations and translators throughout Colorado.