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Old 18th June 2013, 04:15 PM   #1
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Default COAX " cables antenna"

hi ALL,
I wanty know , if exist 150 ohms - impedance characteristyc - of a coax ,solid core ,cable and wher eventually I can purchase some meters ( a lot....)

thanks for reading,

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Paolo , PHASELESS - HIGH END ,LOW COST SPEAKERS handcrafted in ITALY.
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Old 18th June 2013, 05:21 PM   #2
DF96 is offline DF96  England
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Strange as it might seem, Googling '150 ohm coax' might answer your question.
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Old 18th June 2013, 07:04 PM   #3
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Paolo, why do you need 150 Ohm co-ax?
Is it for a radio antenna?
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Old 19th June 2013, 04:40 PM   #4
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Default why 150 ohm coax solid core

Hi, because i put one in go and one in return for my digital hiugh end DIY cabkles......Van den Hul S/VHS 2-75 is not more reperible, unfortunately it was exceptional how digital cables.... ssshhhhh! top secret....

thanks paolo
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Old 19th June 2013, 05:08 PM   #5
DF96 is offline DF96  England
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Digital audio usually needs 75 ohm cables. To get that with 150 ohm (why??) you would parallel two cables together; the result would probably be bad jitter. I don't understand what you mean by 'go' and 'return'.
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Old 19th June 2013, 06:29 PM   #6
marce is offline marce  United Kingdom
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Possibly separating the signal and its return path, the worse thing you can do to a digital signal...
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Old 19th June 2013, 06:38 PM   #7
rdf is offline rdf  Canada
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Quote:
Originally Posted by inertial View Post
hi ALL,
I wanty know , if exist 150 ohms..
The old twinax computer cabling used in AS400 systems: 150 Ohm Twinaxial Cable from Allied Wire and Cable, Distributor of Belden Cable
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Old 19th June 2013, 08:42 PM   #8
DF96 is offline DF96  England
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Quote:
Originally Posted by marce
Possibly separating the signal and its return path,
Well, I did wonder but surely nobody could be that daft? That would mean that some people fret over exactly which BNC they use, while someone else happily uses a 300ohm 'balanced' line. It is fortunate the digital audio signals are so robust!
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Old 20th June 2013, 10:48 AM   #9
marce is offline marce  United Kingdom
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Thinking about this further (the mention of S-VHS cable threw me) are we talking about:
Twisted pair within a shield or
two co-ax cables within a single shielded cable?
S-VHS used the latter, but the first can be used for balanced signals and digital LVDS
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Old 20th June 2013, 11:12 AM   #10
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Yeah, and twin-lead 300 Ohm cable from old TV antenna is twice as good as "just" 150 Ohm

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