Just a thought, since you already pay for direct tv why not have a set up for your rig. We use Direct TV with the HD Slimline dish at home so we can watch and record what we like. For the road we have a standard round dish on a tripod, total investment $40. We then use the non HD style boxes in the rig, an additional $6 per month, per box, which you can turn on and off anytime by calling direct tv so you only get charged when you use it. We keep them on all the time and use one in the garage and one in the guest room. Direct TV will also give you a filter you can add to these boxes so they can be used with the slimline dish so no need for an additional dish on the roof.