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4hv.org :: Forums :: General Science and Electronics
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U.FL Coax Cable, How to Buy ?

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Patrick
Mon Oct 27 2014, 04:57AM Print
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Im looking at Mouser and Digi-Key, but I don't see lengths or reels of the coax cable that's used on the really small SMA antennas for sale. (I think its 0.81mm, or 1.13mm) and Im thinking I need 20 or so feet.

Can anyone help? Am I using the wrong search terms? Is it sold only as an assembly? (which I do see.)

I plan to use these for some radio and gate drive circuits.
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Sulaiman
Mon Oct 27 2014, 01:03PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
Look for RG174 or RG178
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Patrick
Mon Oct 27 2014, 03:25PM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
yep thats it, i had no idea thats what it was called.
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Sulaiman
Mon Oct 27 2014, 05:14PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
I buy RG178 (the silver-plated type) from eBay China ... cheap and good !
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johnf
Tue Oct 28 2014, 07:33AM
johnf Registered Member #230 Joined: Tue Feb 21 2006, 08:01PM
Location: Gracefield lower Hutt
Posts: 284
Or if you want high voltsge
RG316 teflon dielectric with a brown teflon like outer
great for soldering as the teflon doesn't burn and will handle a few kV

it is expensive as the inner an outer conductors are silver plated approx US$ 2 per foot
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Sulaiman
Tue Oct 28 2014, 01:46PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
RG178 is also ptfe, basically the same as RG316
BUT RG316 has lower loss at high frequency and is thicker (2.3mm vs. 1.8mm)
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