Have two antennas on roof, what are they for?

[davem1958]

I have a 2006 Holiday Rambler Vacationer with lots of upgrades.  There are two small (6 inches) black antennae mounted on the roof.  I'm guessing one is for the satellite radio, since my stereo says "Sirius-Ready".  What are the chances the other one is for a cell phone?  How would I find out?  Where would the connection likely be?

I have a Sprint datacard, but the signal is too weak to get online, so I'm planning to add an external antenna.  Don't want to buy one if my RV already has one. 

Dave

 

[John From Detroit]

Rater good, Cell phones and On-Star both use an antenna much like that, Drop by a chevy dealer and take a look at the roof of most anything and compare

 

[Gary RV_Wizard]

If you have Onstar in the coach, one of them is probably a cellular antenna. Getting access to it may be another story... If you do not have Onstar, I'd say the chances are very slim that either is a cell antenna.

Do you have a navigation system built in? One of them could be a GPS antenna.

 

[mrmsharris]

If the extra antenna is above an outside entertainment center it may be for that radio.