Thanks a lot, all of you. I got enough inputs and food for thought to last me the next few chapters of my DIY journey.
For now, I've decided to use the Belden 8451 shielded cable. I would have liked to use the 8450 a bit more (solid core), but Parts Express was selling the 8451 so I just went for it. Thanks again.
For now, I've decided to use the Belden 8451 shielded cable. I would have liked to use the 8450 a bit more (solid core), but Parts Express was selling the 8451 so I just went for it. Thanks again.
Sorry that I will speak not about shielded cables, but I want to add my humble experience: I started to use twisted pair instead of shielded cables, and a problem with "witch cable to choose" has gone.
I just take usual 0.22-0.25-0.35 mm2 wire, and twist it by myself. It is very flexible, and good enough for my measurement instruments (including low-distortion oscillators, amplifiers, etc).
Here is an example:
I just take usual 0.22-0.25-0.35 mm2 wire, and twist it by myself. It is very flexible, and good enough for my measurement instruments (including low-distortion oscillators, amplifiers, etc).
Here is an example:
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But the shielded cables we've been mentioning here are twisted too. Is your twists per inch more than the normal shielded cable figures?I just take usual 0.22-0.25-0.35 mm2 wire, and twist it by myself. It is very flexible, and good enough for my measurement instruments (including low-distortion oscillators, amplifiers, etc).
I don't know, it's hard to find good enough for me twisted shielded flexible cable (somewere in my area). It's very rare, I started to see something like I need only last years. I have one or two examples, but I haven't taked it apart intentionally, and that twists I see in them - they are less twisted than I do, and they have less square milimeters wires (so they are not durable - 0.10-0.20 mm2). If wires are thick (tought) enough for me ( >0.25 mm2) then cable (with shield and outer isolation) becomes too thick and less flexible for inner wiring - not suitable.
The price for that cables (which are almost ok, but not 100% ok for me) is an order larger then just hand-made 0.25-0.35 mm2 twisted wire.
So, from all points of view I have chosen to twist wires by myself. Shield doesn't help much if wires are twisted good (6 dB max in theory).
The price for that cables (which are almost ok, but not 100% ok for me) is an order larger then just hand-made 0.25-0.35 mm2 twisted wire.
So, from all points of view I have chosen to twist wires by myself. Shield doesn't help much if wires are twisted good (6 dB max in theory).
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Understood.
Yes, I can agree with one point: I too have seen shielded twisted 2-conductor cables which are twisted sparsely.
UTP cables (for Ethernet) have very tight twists, but it's hard to find shielded Ethernet cables where I live. Since you seem to like unshielded cable, maybe you can check out UTP cables?
Yes, I can agree with one point: I too have seen shielded twisted 2-conductor cables which are twisted sparsely.
UTP cables (for Ethernet) have very tight twists, but it's hard to find shielded Ethernet cables where I live. Since you seem to like unshielded cable, maybe you can check out UTP cables?
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