Author Topic: RF noob question: SMA port savers: from where do you get them ?  (Read 1723 times)

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Offline rteodor

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Got tinySA/LiteVNA for fun but I connect and disconnect them more times than I expected.

I checked the usual places from where I get stuff (Mouser/Eleshop/Reichelt/even Amazon) but either I am too dumb or they are not there.

So, where do you find this SMA port savers ?
(with bonus thanks for places that might have other GHz RF'ies like mixers and filters :))
 

Online trophosphere

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Offline rteodor

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Re: RF noob question: SMA port savers: from where do you get them ?
« Reply #2 on: August 12, 2022, 10:13:26 pm »
Quote from: trophosphere
In-Series Adapter

Looking at the price I remember how I did not find them on Mouser. Sometimes the subconscious decides...
« Last Edit: August 12, 2022, 10:15:14 pm by rteodor »
 

Offline Marco

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Re: RF noob question: SMA port savers: from where do you get them ?
« Reply #3 on: August 12, 2022, 11:25:12 pm »
Haven't tried them, but I could only find 90 degree Angle on Amazon for Chinesium parts :
https://www.amazon.de/-/en/Female-Adapter-Right-Degree-Connector/dp/B08B1PGPDY
For straight through Chinesium, would need to use Aliexpress or similar I think.
https://aliexpress.com/item/32946122594.html?gatewayAdapt=glo2nld

Bit of a crapshoot how it will perform though in the couple GHz range.
 

Offline TheUnnamedNewbie

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Re: RF noob question: SMA port savers: from where do you get them ?
« Reply #4 on: August 13, 2022, 01:20:06 pm »
Bit of a crapshoot how it will perform though in the couple GHz range.

Also risk damaging connectors on other devices, as their interpretation of the tolerance specs on connectors tends to be quite loose...
The best part about magic is when it stops being magic and becomes science instead

"There was no road, but the people walked on it, and the road came to be, and the people followed it, for the road took the path of least resistance"
 

Offline Roger Need

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Re: RF noob question: SMA port savers: from where do you get them ?
« Reply #5 on: August 17, 2022, 12:10:07 am »
Got tinySA/LiteVNA for fun but I connect and disconnect them more times than I expected.

I checked the usual places from where I get stuff (Mouser/Eleshop/Reichelt/even Amazon) but either I am too dumb or they are not there.

So, where do you find this SMA port savers ?
(with bonus thanks for places that might have other GHz RF'ies like mixers and filters :))

I bought mine off eBay.  I have tried several different types and they all work well (only tested to 900 MHz.)  You can get them from Digi-Key but way more expensive. 

https://www.ebay.ca/itm/181091044796?hash=item2a29de0dbc:g:LtoAAMXQlgtRv~SF&amdata=enc%3AAQAHAAABEMzfNfS3tO1KovfUuUR9jNDhUAqCS4NH3ostM4x8q9L2T%2BMrM4R7zF5nHYEvPP7a%2F6kQ1MCqQSHssmhD4190FyOftc2qfzpbAsxEQzJuRRQSjo7Kk4y5oGJbPrRJGHy6YhVlik%2FZGV52IeqIYkGX07Kq1UF6NJO8RV4MPCpnfbtugkqxr82XdxRUxNlWZjfjLnRMmGMffp%2FCiYWOhQeeSjH5%2Bse2Wwjk0le%2F%2FfXyqgOeRuKNR5yMwgZZw9ZVBbJCv0bgxRej6gWwVX0b0ITBythbw5hXMqUtGA0uaXJOEXQUvGbTaPWx3MUi6vtlEf058BQGb69Nd58N%2BpxyJ%2Fd%2FgX9Q%2BfuN3YdBjAqBlmj5VGVL%7Ctkp%3ABk9SR7K48ZHVYA
 

Offline rteodor

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Re: RF noob question: SMA port savers: from where do you get them ?
« Reply #6 on: August 18, 2022, 08:59:32 am »
Quote from: Marco
Bit of a crapshoot how it will perform though in the couple GHz range.
Just the domestic RF FM up to 2.4GHz. I'll save fine radar applications for another life.

Quote from: TheUnnamedNewbie
Also risk damaging connectors on other devices, as their interpretation of the tolerance specs on connectors tends to be quite loose...
Good point. I also got some not so cheap atenuators that in total were more expensive (~100EUR) than the tinySA (~50EUR).
So to protect the atenuators now I need the expensive port saver ? Wouldn't be better to just get some quality cables instead and leave them connected ?
« Last Edit: August 18, 2022, 09:01:11 am by rteodor »
 

Offline TWMIV

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Re: RF noob question: SMA port savers: from where do you get them ?
« Reply #7 on: August 19, 2022, 05:59:25 pm »
Minicircuits is my go to for most connectorized components.

Sf-SM50+ go for ~$11.
https://www.minicircuits.com/WebStore/dashboard.html?model=SF-SM50%2B
 
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Offline antenna

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Re: RF noob question: SMA port savers: from where do you get them ?
« Reply #8 on: August 21, 2022, 05:39:37 am »
https://www.rfparts.com/5030.html

I couldn't be happier.  These are probably overkill for a budget nano, but I am certainly happy with these!!!
[attach=1]
« Last Edit: August 21, 2022, 05:44:08 am by antenna »
 
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