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coax - Coaxial cable and lower frequencies - Electrical ...
https://electronics.stackexchange.com/questions/495214/coaxial-cable-and-lower-frequencies#:~:text=For%20signals%20in%20the%20hundreds%20of%20KHz%20and,high%20impedance%29%20and%20video%20%28~5%20MHz%2C%20low%20impedance%29.
What is the impedance of a coaxial cable – Morgan's HowTo
https://morganshowto.com/what-is-impedance-of-coaxial-cable/
Impedance is the value of resistance that is encountered by the signals which proceed from the coaxial cable. When the impedance is low, more waves pass through the coax cable because of little resistance, and similarly, when the impedance is high, waves have more difficulty passing through the cable as there is a lot more resistance.
coaxial cable - 50Ohm Coax presents 50 Ohms of impedance ...
https://ham.stackexchange.com/questions/17039/50ohm-coax-presents-50-ohms-of-impedance-on-which-frequency
Below 100 kHz though, its impedance rises to 750 ∠ − 46 ∘ Ω (yes, a complex Z 0) RG-58 has a corner frequency of 36 kHz, below this its impedance rises. See also this excellent PDF by Audio Systems Group, which shows the impedance of a 75 Ω coaxial cable rising to 1000 Ω at 1 kHz, and almost 10 k Ω at 1 Hz. None of this really matters for hams!
Coax Impedance: Characteristic Impedance - Electronics …
https://www.electronics-notes.com/articles/antennas-propagation/rf-feeders-transmission-lines/coaxial-cable-characteristic-impedance.php
Coax impedance. All feeders possess a characteristic impedance. For coaxial cable there are two main standards that have been adopted over the years. These are 75 Ω and 50 Ω. The 50 Ω coax cable is used for professional and commercial applications whereas the 75 Ω coax cable is used almost exclusively for domestic TV and VHF FM applications.
Coaxial Cable Characteristic Impedance vs Frequency
https://www.jensign.com/RG58U/index.html
Coaxial Cable Characteristic Impedance vs Frequency. April 18, 2014. Coaxial cable is characterized by a "nominal" real characteristic impedance Zo such as 50 or 75 ohm. Zo generally is defined as the ratio of a sinusoidal AC voltage phasor to the current phasor, which may be phase shifted, for a single outbound travelling wave (with no ...
Cable impedance - ePanorama.net | Audio
https://www.epanorama.net/documents/wiring/cable_impedance.html
The following formula can be used for calculating the characteristic impedance of the coaxial cable: (formula taken from Reference Data for Radio Engineers book published by Howard W. Sams & Co. 1975, page 24-21) impedance = (138 / e^(1/2)) * log (D/d) Where: log = logarithm of 10 d = diameter of center conductor D = inner diameter of cable shield
impedance matching - Coax cable - capacitive load ...
https://electronics.stackexchange.com/questions/504196/coax-cable-capacitive-load
\$\begingroup\$ @Jeres "G" is the conductance between wires (for a coax that's the leakage between inner and screen). G can be largely ignored until frequencies start to approach 1 GHz when dielectric losses arise. A typical coax cable has 50 ohm characteristic impedance above about 1 MHz but that doesn't mean that's the impedance that the source …
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