[SOLVED] coax cable selection upto 6Ghz

[emresel]

Hello;
I will use around 1~1.5m coax cable upto 6Ghz. Feed connector is SMA type.
I found below can be used with SMA.
RG142, RG58, RG316, RG316 DS (Double Shileded)

Can you grade them from good to bad?
As i understand rg142 is better. But i cannot decide if rg58 or rg316 is better.

Are those bad to use such freq (~6ghz) for short distances?
Any other advises welcome.

Thanks

 

[BigBoss]

Those are cable classifications, they don't point out about the quality.
Quality depends on the materials which have been used in cable assemblies.
I recommend you to use factory assembled and crimped high quality cables for consistant measurments for that length.
https://www.gore.com/en_xx/index.html

 

[emresel]

Hi;
Thanks for advise.
But as i checked on line sites which sells assembled cables, they define the cable between connectors as RGxxx.
ie digikey, pasternack. So i asked about like this.
Even i purchase factory assembled cable still i need an idea about proper cable selection.

 

[FvM]

Did you also notice the column "Maximum frequency" in the cable selectors? RG58 e.g. isn't specified for frequencies above 1 GHz and won't be offered in a selection for 6 GHz cables.

For detail information, you'll either review cable manufacturer catalogs or the MIL RGxx specifications.

 

[BigBoss]

Hi;
Thanks for advise.
But as i checked on line sites which sells assembled cables, they define the cable between connectors as RGxxx.
ie digikey, pasternack. So i asked about like this.
Even i purchase factory assembled cable still i need an idea about proper cable selection.

That's why I'm saying those cable classifications don't fit into standard measurement grade.
Cable assemblers-suppliers use their own custom designed cables and you should refer their cable specifications to decide the right one.

- - - Updated - - -

That's why I'm saying those cable classifications don't fit into standard measurement grade.
Cable assemblers-suppliers use their own custom designed cables and you should refer their cable specifications to decide the right one.

Try this applet..
https://tools.gore.com/gmca/

 

[emresel]

Thanks for your comments,
I skip rg58 and decide to buy RG316 DS for now to try and see.
I also found a note later;
**broken link removed**
Add here, maybe help any other person look at here.