There are 3 satellites with transponders in the 4.5-4.8 GHz that I can receive in North America. Last I looked at them (a few months ago) Lyngsat was accurate in their listings.
40.5 W SES-6: Circular, one ITC channel and one encrypted mux. Covers South American, most of North America and Europe, and a bit of North Africa.
65 W Eutelsat 65 W A: Linear, 2 ITC channels. Covers South America and somewhat less of North America, Europe, and North Africa than SES-6 does.
61 W Amazonas 2: Linear, I've only seen data channels here. Covers South America and some of North America.
Also, Hispasat 30W-6 will have 10 linear transponders in the 4.5-4.8 GHz band. Coverage is Southern USA through South America. It is scheduled to be launched by Space X later this year.