The RG174 vs. RG178 article talks about the difference between RG174 and RG178 cable.
What is a cable?
Cable refers to a wire with an insulating layer and a protective sheath, and consists of a combination of wires insulated from each other. It is used for telecommunication or power transmission in the air or installed underground or underwater.
How is the RG series cable named?
The complete naming of wire and cable is usually more complex, so people sometimes use a simple name (usually the name of a category) combined with the model specification instead of the complete name, such as RG-178 as an example:
RG is the U.S. military standard MIL-C-17 coaxial RF cable general term, 178 is just a sequence of numbers only, the different numbers represent the cable material, characteristic impedance, electrical and mechanical performance requirements, etc., different numbers represent the material, characteristic impedance;
Different numbers represent different cable materials, characteristic impedance, electrical and mechanical performance requirements, and so on, involving a wide range.
RG174 coaxial cable is widely used in communication, electronic impedance, military navigation, radar, aviation, and other electronic equipment to transmit RF signals, in microwave equipment, wireless communication equipment systems and equipment are used. RG178 is widely used in communication, aviation, intelligent robotics, military, and other fields.
RG174 and RG178 are two common coaxial cable types. RG174 vs. RG178, what are the differences between RG174 and RG178 cable?
1. RG174 vs. RG178, the different outer diameter size and appearance shape between RG174 and RG178 cable
RG174 and RG178 have different outer diameter sizes. In general, RG174 has a larger outer diameter of about 2.79 mm (0.109 in), while RG178 has a smaller outer diameter of about 1.52 mm (0.060 in). Therefore, cosmetically, RG174 is a little thicker than RG178.
2. RG174 vs. RG178, the different impedance between RG174 and RG178 cable
Impedance is a characteristic parameter of cables, which indicates how well a cable matches the impedance of an electrical signal, and the impedance of RG174 and RG178 are different. Generally, RG174 has an impedance of 50 ohms (Ω), while RG178 has an impedance of 50 or 75 ohms (Ω), depending on the specifications and application.
3. RG174 vs. RG178, the different scope of use and application areas between RG174 and RG178 cable
Due to its larger outer diameter, RG174 is usually used for applications with longer signal transmission distances and wider frequency ranges, such as wireless communications, network equipment, and antenna systems.
RG178, on the other hand, due to its thinner appearance and flexibility, is suitable for applications that require bending and connecting in tight spaces, such as internal connections in electronic devices, test and measurement areas, etc.
4. RG174 vs. RG178, the different available frequency ranges between RG174 and RG178 cable
Due to the difference in outer diameter and impedance, RG174 and RG178 have different available frequency ranges. Generally speaking, RG174 can be used in higher frequency ranges, usually up to 1 GHz or more, while RG178 is usually limited to lower frequency ranges, such as a few hundred megahertz (MHz).
It should be noted that other factors such as signal transmission requirements, reliability, cost, etc. need to be considered for selection and use in specific applications, so it is advisable to refer to the relevant specification sheets and manufacturer’s recommendations when selecting cables to ensure that the correct type of cable is selected. e antenna by parameter explanation.
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