From ErfWiki

Contents 1 Canon 2 Speculation 2.1 Powers 2.2 Real World References

Canon

One of the Arkentools, currently possessed by and attuned to Charlie of Charlescomm.^{Erf-b1-p042Erf-b1-p092}

Arkendish gives its user superior Thinkamancy abilities.^Erf-b1-p104

Speculation

Powers

Another ability may be to interfere with other communication devices (Eyebook, prime example).^Erf-b1-p100

May give a decrease in Mathamancy (Charlie's deals with Parson).

Might give enhanced Thinkamancy abilities to units under Charlie's control (Charlie's Archons).

Extreme speculation: Mind control/influence, especially when directly communicating. (Maggie is very worried when Parson asks her to contact Charlie.)^Erf-b1-p088

Real World References

It was pointed out that Dish Network formed by Charles W. "Charlie" Ergen provides satellite television service in the United States.