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| Help find a low capacitance miniature coax cable? |
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| cvanc:
Currently using RG174 which is tiny and flexible and 31pF/foot. I've looked for other small coax with less capacitance but came up empty. I can use something larger if needed, but all I've found that has significantly lower C was almost a half inch in diameter; that's too big. Am I missing a good candidate somewhere, or is RG174 about as good as it gets? Impedance does not matter - it will carry analog audio. Thanks... |
| Mechatrommer:
why do you care at capacitance if its only for audio? there are much smaller 1.13mm dia coax in ebay, but about the same capacitance as stated. i think a pair of audio or twisted wires is much lower capacitance. |
| cvanc:
--- Quote from: Mechatrommer on March 14, 2020, 04:58:15 pm ---why do you care at capacitance if its only for audio? --- End quote --- Fairly long runs; they're about 30ft/10m |
| daqq:
Try the higher Z0 ones, such as https://www.mouser.sk/datasheet/2/46/89269-84006.pdf , with 12.8pF/ft. |
| Someone:
--- Quote from: cvanc on March 14, 2020, 05:08:21 pm --- --- Quote from: Mechatrommer on March 14, 2020, 04:58:15 pm ---why do you care at capacitance if its only for audio? --- End quote --- Fairly long runs; they're about 30ft/10m --- End quote --- Audio bandwidth into 1nF still isn't hard and would be typical of normal balanced+shielded audio cable for those lengths. |
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