CP antenna for control

joshuabardwell

Senior Member
Mentor
This is not the first time someone has asked this question, and I have seen some answers, but I still don't feel like I have a good understanding. Why doesn't everyone use CP antennas for control, like they do for video? It seems to me that the lack of cross-polarization loss would be just as big a benefit for control signals as it is for video signals. You lose something like 30 dB to cross-polarization! But almost nobody seems to fly CP on their control, so I wonder if there must be some aspect that I am missing. What is it?

EDIT: One response might be that many/most receivers don't have external antenna connectors, or if they do have a U.FL connector, nobody wants to hassle with an SMA to U.FL pigtail. I dunno. Even if you couldn't put a CP on your model for some reason, you would still only lose 3 dB if you put a CP on your transmitter. Given how often my plane is banked 60 degrees, it still seems like I would come out ahead.
 
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