Brand New – Factory Sealed - Lowest price
Our strategy is to provide the customer with direct access to wholesale prices.
Please contact us with any questions you may have,
we will work hard to make sure your transaction is as quick and smooth as possible.
We offer Shielded and unshielded Cables
Shielded 20 Gauge- Foil-shielded cable is very heavily used for permanent installation work and for portable multipair “snake”
cables. light weight and slim profile makes foil very advantageous in applications involving
pulling cable into conduit. In these cases the conduit (if metallic and properly grounded) can greatly enhance
the RFI and EMI shielding properties of the thin mylar/aluminum foil generally used. The 100% coverage of
the foil shield, which should be of great benefit at radio frequencies, is somewhat compromised by the inductive
nature of the copper drain wire typically used for terminating it. At low frequencies, performance is hampered
by the relatively low conductivity of the foil/drain configuration. In applications involving repeated flexing and
coiling, the metallized mylar tape will begin to lose its aluminum particles, opening up gaps in the shielding.
This can be a particular problem with multipair cable used for touring systems, where the shield breakdown
may lead to increased crosstalk between channels and to annoying radio pickup problems.
The amount of copper in any electrical cable is usually dictated by the amount of current it has to carry, or
by the tensile strength it requires to perform without breaking. If we take the worst-case situation, where the
cable is used for a line-level (+24 dBm) 600-ohm circuit, the current is a negligible 13 milliamperes (that’s 13
thousandths of an ampere). The power in such a circuit is 100 milliwatts, or one-tenth of a watt. The current
produced by a typical 150-ohm microphone connected to a 1,000-ohm preamp input is less than 10 microamperes
(that’s 10 millionths of an ampere), with power of less than a microwatt.
Un-Shielded 24 Gauge Most Cable sell on eBay.
