The Wally can be used by itself. When you add an external hard drive to a Wally it can be used as a DVR and you can watch one program while another is recording.
With a dome type antenna, you can only record what your watching or while not watching 1 channel.
You still have the pause, fast foward and rewind features using the hard drive.
If you use a 3 LNB type dish, you can record 1 channel while watching another. The Wally will recognize the 3 LNB dish and open up the second tuner.
There is a $50 one time charge for Dish to authorize the use of an external hard drive. This is linked to your Dish account.
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