This is not so much the Echostar as the cam. I have an Aston cam in a Nokia 9600, and while the Nokia barely gets lukewarm the cam gets very hot.
In my case it was sufficient to relocate the receiver to maximise air flow around and under it, but another workaround I have heard of is to attach a socket 7 cpu type fan to the case of your receiver just above the cam and power it from a suitable 12v line from the receiver's power supply. The fan should be driving air up out of the receiver to minimise dust build up.
Alternatively the pcb type cards with surface mounted chips are much more resistant to heat than goldcards.
HTH
Eccles.