I have connectivity issues where by there's reception problem in my home. I  got myself an indoor Omni directional antenna thinking it would boost but the device is worse than stock antennas.

Does the MR600 support Outdoor antenna? I'm asking as I don't want to invest in something that won't help. The outdoor antenna I'm looking at is Cambium Epmp 25Dbi dish antenna. I would like to know if the antenna will sort my problem, thank you.