RG-59/U is a specific type of coaxial cable, often used for low-power video and RF signal connections. The cable has a characteristic impedance of 75 ohms, and a capacitance of around 20pF/ft (60pF/m).[1] The 75 ohm impedance matches a dipole antenna in free space. RG (for radio guide) was originally a unit indicator for bulk radio frequency (RF) cable in the U.S. military's Joint Electronics Type Designation System. The suffix /U means for general utility use. The number 59 was assigned sequentially. The RG unit indicator is no longer part of the JETDS system (MIL-STD-196E) and cable sold today under the RG-59 label does not necessarily meet military specifications.
A section of RG-59 cable with its end stripped.
Outer plastic sheath
Copper braid shield
Inner dielectric insulator
Copper-plated core (sometimes solid core)
RG-59 is often used at baseband video frequencies, such as composite video. It may also be used for broadcast frequencies, but its high-frequency losses are too high to allow its use over long distances; in these applications, RG-6 or RG-11 are used instead. In cases where the transmission distance is too long for these media, such options as UTP (unshielded twisted pair) or fiber optic can be used.
RG-59 coaxial cable is commonly packed with consumer equipment, such as VCRs or digital cable/satellite receivers. Manufacturers tend to include only RG-59 cables because it costs less than RG-6 does. However, given the short lengths provided (usually 4–6 ft or 1.2–1.8 m), this is generally sufficient for its typical use.
this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, august, 2016, learn, when, . This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources RG 59 news newspapers books scholar JSTOR August 2016 Learn how and when to remove this template message RG 59 U is a specific type of coaxial cable often used for low power video and RF signal connections The cable has a characteristic impedance of 75 ohms and a capacitance of around 20pF ft 60pF m 1 The 75 ohm impedance matches a dipole antenna in free space RG for radio guide was originally a unit indicator for bulk radio frequency RF cable in the U S military s Joint Electronics Type Designation System The suffix U means for general utility use The number 59 was assigned sequentially The RG unit indicator is no longer part of the JETDS system MIL STD 196E and cable sold today under the RG 59 label does not necessarily meet military specifications A section of RG 59 cable with its end stripped Outer plastic sheathCopper braid shieldInner dielectric insulatorCopper plated core sometimes solid core RG 59 is often used at baseband video frequencies such as composite video It may also be used for broadcast frequencies but its high frequency losses are too high to allow its use over long distances in these applications RG 6 or RG 11 are used instead In cases where the transmission distance is too long for these media such options as UTP unshielded twisted pair or fiber optic can be used RG 59 coaxial cable is commonly packed with consumer equipment such as VCRs or digital cable satellite receivers Manufacturers tend to include only RG 59 cables because it costs less than RG 6 does However given the short lengths provided usually 4 6 ft or 1 2 1 8 m this is generally sufficient for its typical use RG 59 is frequently used to synchronize two digital audio devices such as ADAT optical devices This is called word clock See also editBNC connector Coaxial cable RG 58 A similar cable but with an impedance of 50 or 52 ohmsReferences edit Product Specifications 8261303 10 amp 5571 WHRL RG59 40 1000 PDF Objects eanixter com Retrieved 2016 08 03 Bibliography editStraw Dean The ARRL Handbook for Radio Communications 2006 83rd ed Newington CT American Radio Relay League ISBN 0 87259 949 3 OCLC 62026192 nbsp This electronics related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title RG 59 amp oldid 1092049867, wikipedia, wiki, book, books, library,
