I guess my biggest question that arises from this situation is...Why does EMF require so many actual radio stations without providing any local presence? I would be reluctant to donate to an organization that is still rooted in spending so much money on buildings, transmitters, etc. to simply rebroadcast an internet signal. I believe dollars could be more wisely spent opening local outreach offices and funding the installation of hotspots and wi-fi to increase the availability of the internet stream to potential listeners. They could then use this a a promotional tool to illustrate their local involvement in the community (also a tool for online education) and perhaps set up a challenge to new listeners to "try them" for a period of 15-30 days and then provide feedback.
EMF has used the model from nearly every other nation in the world where radio stations are national or regional, with many transmitters carrying the same programming.
EMF has local outreach. They have counselors available by phone who can discuss issues ranging from how to pray or how to get along with a non-believer to moral issues and the need for someone to pray with. And they can refer listeners to local Christian groups for specific issues. They also have, in many cities, local outreach staff who organize groups. If you look at their website, you can see all the things they do for their listeners and followers.
Because they are non-denominational, I believe they can also refer listeners to specific local groups and congregations. What K-Love has become is a companion for a certain type of believer that complements local church membership and encourages what they consider a "Christian lifestyle".
There is nothing they can do on the air that would be better if done locally. In fact, the national service allows any budget a local format would spend to be used for outreach.
90% of American use radio every week. Among people over 30, the figure is higher and it represents more hours of listening. So radio is the primary vehicle and streaming is a supplement or complement to the broadcast service. EMF does lots of research among its donors, and over the air radio is the primary use of the network.
Note: I have nothing to do with EMF. I am not an Evangelical Christian, but I believe in the use of national radio "networking" whether it be EMF or the Seacrest show or Charlamagne Tha God morning show. The US is way behind the rest of the world in national radio broadcasting, yet we do it and have done it since the late 40's on TV!