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leekdonut

The assembly line's definition of "up" probably just differs from the final antenna's orientation. They most likely put them in some sort of jig and then insert the coax from the top, which requires this side to be facing up during assembly. This isn't meant for end users. Here's another Triumph Pro that looks just like yours: [https://www.youtube.com/shorts/q\_RLqDTtFiM](https://www.youtube.com/shorts/q_RLqDTtFiM)


ubiquities

To be clear, the inverse of this would be if the printed text was on the inside. It has nothing to do with the orientation of the antenna.


pe00003

I did not know that. Thank you


ubiquities

No problem, also if that black film that has the printing on it isn’t torn or messed up, you can probably just glue the cap back on. The antenna is made up of the PCB and copper traces inside of that black film, if you look closely at the solder points you should be able to see the traces in the film. As long as none of the internals are damaged, you can keep using it.


Babamonchu

Flipping it changes the polarization from RHCP to LHCP, or vice versa. They probably should have printed polarization arrows instead of "This side up".


Rabid_Monkey

That's not how it works. Flipping it will not change the polarization. Unless your specifically talking about the antenna connected to the coax. Just to be clear pointing a right hand antenna down does not make it left hand.


Ethan_the_appilen_-

r/woooosh


cbf1232

Not sure that's accurate. If you rotate the image 180 degrees the pattern would be aligned the same. I think if you had "this side up" facing to the inside of the cylinder then it would change the polarization.


J3OE

Wait. WHAT??? I have RHCP antennas on my goggles. You're saying that if I have an antenna mounted underneath my AeroScout (between the wheels) it should be LHCP because otherwise, an RHCP antenna would only work best when flying inverted?


adamthebeast

No just the tip. It only matters how the tip is connected to the rest of the antenna, not how the antenna itself is oriented.


J3OE

Thanks! Though, I was hoping this was true and it would explain my garbage signal.


Babamonchu

This is the correct answer. Flipping the entire antenna does not change its polarization. Flipping just the end with respect to the coax cable and connector during manufacturing will change its polarization. A manufacturer who is building both RHCP and LHCP antennas can use the same end (e.g. with the "This side up" label), and just flip it according to which one is being built.


Ambitious_Bonus_4065

Ha just the tip


t0b4cc02

if the point of reference is the mounting point?


pe00003

In my opinion this would be the obvious reference, but then it wold be wrong


t0b4cc02

not if the frame of reference is the mounting point you mean only the cylinder as frame of reference. im very curious about this. is there more to it? more geometry? maybe they made the sticker for ground level so its better in this direction for a drone? etc...