High performance on XM(R) service<br> Compatible for use with XM(R) & Sirius(R) services<br> Extended range<br> 3"<br> ground-plane plate<br> 10"<br> tall<br> 3-way stainless steel mirror mount & bolts<br> Replaceable cable<br> 21ft super-thick premium RG58/U cable<br>