The Jack antenna version that uses the Winegard mast (OA-8000) is not deployable during movement. However, it will still receive a signal as the antenna can still be powered and receive signals. You may not get optimum reception though as you cannot aim it.
However, the Jack antenna is less directional than the Winegard, which will mitigate having to aim it a bit.
Of course, the "original" short mast version of the Jack (OA-8100 or OA-8200) requires you to remove the existing Winegard mast, which might require sealing holes, etc. both inside and outside.
As well, the inside antenna base (where the rotate knob is located) has a signal strength meter and gain control knob. It looks like it gets its power for these features from the Coax, but that means you may or may not need to wire in their 12V/coax adapter rather than use the Winegard one (or the one in the video switch if that is what you are using for power).
So for a retrofit, I suppose the decision is ease of installation vs. being able to aim the antenna while traveling down the road.
And I suppose, if you were ingenious enough, you could come up with a short mast that didn't need to be lowered for the OA-8000 version.
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