I bought a HN7700S router through a liquidation sale without an antenna. I was wondering if there is anyway to test the router without having to purchase an antenna or service. I was thinking that the lights on the router may indicate if it is operational. I am afraid that if I purchase an antenna and sign-up for service, the router may not be functional. I do not want to dump a lot of money into just trying satellite internet to compare it to my current internet via the cable company. Thanks in advance.