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Topic starter
2020-03-25 9:56 pm
HI All, I am trying to do another project and I am not able to order the right cable. I can't understand the connections so I am going to post the photos for them because I am confused. I hope someone can tell me which cable to order based on the photos below. The antenna I have has a threaded female connection body and female inner pin connection, the connector on the PCB has a male inner pin and a male connection body but not threaded. Please see photos below. I can't get my head around ordering the right cable connection between them!
2020-03-27 7:16 am
These are commonly referred to as "RP-SMA" RF connections.
You might have to make your own cable, if so, try searching for:
Female RP-SMA.
Male RP-SMA Threaded
Something like this:
https://www.digikey.hk/product-detail/en/rosenberger/32RS147-302L5/1868-1222-ND/7926923
Having said that, I have bought small RF adaptor cables with SMA/RP-SMA connections in the past, if I remember where I got them, I will post again.
2020-03-27 7:26 pm
Farah
A closer look at the picture of the male connector, makes this a little more difficult. you'll see in the image below that the similar connector (Female RP-SMA) has threads on the outside of the connector. yours does not seem to have any threads. Inside or out. Could you send another picture, showing the side view of the connector? I've not seen this type of connector (thread-less) before. Speculation would have it that your connector is incomplete or mal-formed.
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Dale
2020-03-31 2:58 am
Threadless SMA connectors do exist. They a referred to as "Quick Connect" or "Push-on" connectors and typically used for testing.
@fhaddad is it possible to use a more widely available connector on the PCB side?
2020-03-31 3:31 am
Example quick connect RP-SMA:
https://www.data-alliance.net/rp-sma-quick-connect-male-to-female-adapter-qma-slide-on-for-testing/
But still may not be the right part.
2020-03-31 11:51 am
Thanks @sysguru,
Just goes to show, there's always something to be learned. It's one of the reasons I'm in the forum 👍
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Dale
Topic starter
2020-04-02 4:19 pm
Hi All,
Thanks for your support. Let me update you on what happened with me perhaps you can help here.
From the Antenna side, I had to solve the issue by buying an adaptor that has mail threading on one end and female on the other and has the pin on both ends. The cable that I bought also is here and you can see both ends
on the PCB side, I still have a problem. The cable I ordered does not fit the connectors I bought. The first connector that I bought is the one I posted the photo for above and here is the side of it
The second connector that I thought it will work also didn't work, here's the photo
Topic starter
2020-04-02 4:22 pm
Yes please, just let me know what cable and what PCB connector I should use or are famous and widely used
2020-04-03 2:05 am
@fhaddad Most of devices I purchased use Female SMA, which should work with the adaptor you have and cables should be easy to find.
Otherwise, you could use a Female RP-SMA connector, then plug the antenna directly in.
Apologies for the badly focused photos from my phone.