Jump to content

Recommended Posts

Hi all,

I'm a tad confused about the de facto standard for SMA connectors on video TX/RXs. What specific type of SMA connector does 2.4GHz video gear usually have? There are some cheap dipoles available at the local electronics store, but they're terminated with a 'reverse SMA connector'. Should reverse SMA be avoided for the sake of compatibility?

Cheers,

-TheOtherRob

Share this post


Link to post
Share on other sites

A reverse coupler would be like your car having a + ground system. A normal SMA connector has the center wire as the signal and the threaded part is the ground or reflector. Avoid a reversed SMA antenna.

Share this post


Link to post
Share on other sites

Im not sure if I fully understand your question but all the 2.4ghz units I have used over the years have the same type of SMA connector. Could you post some pictures ?

As for the dipoles, I make my own and surgest you give it a try. I have tested a few and the results from some are not very good so you have nothing to loose.

Terry

Share this post


Link to post
Share on other sites

In the connector world, there are a couple of SMA designations.

Specifically, RPSMA (reverse polarity SMA) consists of the pins being swapped in the male/female SMA housings. These connectors are considered non-standard and used on devices where the FCC or other regulating agencies do not want antennas swapped out easily.

Simply put, an RPSMA connector will not mate electrically with an SMA. Either, parts will be in the way, or they will screw together and not make electrical contact.

Michael

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...