Why are people using RP-SMA?

Discussion in 'Walkera Cameras/Videos' started by Kristjan, Feb 27, 2018.

  1. Kristjan
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    Kristjan New Member

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    Can anybody tell me why it seems almost all 5.8Ghz video transmitters come with the incorrect RP-SMA plug for the antenna? Why is everybody using this idiotic and incorrect plug for video transmitters? Since I use the correct SMA connection (Like Walkera uses) on all my antennas it means I have to use an extra gender changer, increasing weight and decreasing signal strength. I just understand why using RP-SMA is a thing.

     
  2. bjr981s
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    bjr981s Moderator Staff Member

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    There is no Correct or Incorrect type. There is just 2 standards that evolved over a long period of time before drones and FPV existed.
     
  3. Kristjan
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    Kristjan New Member

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    Well actually I would disagree with that. The weakest part of an antenna is the connecting pin so when you have two objects that are connected together with the pin one of them being a complicated and costly piece of electronics and the other just a cheap simple piece of wire you would want the cheap component to have the pin so you could replace it easily if the pin broke.
     
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    bjr981s Moderator Staff Member

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    No that is not correct. The are both exactly the same mechanically and electrically. Its just that they have the opposite threads.

    Male-Male to Female Female and Male Female to Female Male
     
  5. Kristjan
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    Kristjan New Member

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    Well yes they are both identical only reversed, but the problem is that the pin is always on the receiver side instead of on the antenna. So if this tiny pin breaks the receiver itself is broken or at least hard to repair instead of just replacing a simple antenna.

    There is probably some long history of why this is used that I am not aware of, but to me this is just bad design. But I guess this is just the same as the old age argument of which side of an egg is up :)
     
  6. bjr981s
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    bjr981s Moderator Staff Member

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    You say "tom ate o" I say tom art o." :confused:

    If you break the pin the you should have to go through pain as its nearly impossible to do. :p

    Cheers Brian:D
     

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