The coaxial cable running from your radio to the antenna is unbelievably important. Everything you transmit and receive must travel along its length. All too often the coax is ignored and performance suffers because of the lack of attention it receives. Having a hi-performance antenna and a defective piece of coax is the equivalent of having a hi-pressure nozzel at the end of a garden hose that is full of holes. Complaining about the antenna or the nozzel performance is unjustified. The fact remains, when it comes to buying coaxial cable, bulk or in assemblies, quality is everything!
RG-58 type: This type of coax is used for single antenna installations and for jumper wires that go between the radio and a test meter (SWR meter). The RF resistance of this type of coax is 50-ohms. Within this group you will find coax labeled with RG-58 or RG-58/U. These cables have a solid center conductor. The second type is RG-58A/U and they have a center conductor made up of many thin wire strands (normally about 17) that are twisted together to form the center conductor. The common outer diameter for this type of cable is about 0.20".
RG-58 type: This type of coax is used for single antenna installations and for jumper wires that go between the radio and a test meter (SWR meter). The RF resistance of this type of coax is 50-ohms. Within this group you will find coax labeled with RG-58 or RG-58/U. These cables have a solid center conductor. The second type is RG-58A/U and they have a center conductor made up of many thin wire strands (normally about 17) that are twisted together to form the center conductor. The common outer diameter for this type of cable is about 0.20".
This cable is especially made for RF Systems to our own specifications. It full fills all military standards for RG 58 coaxial cable. The shield is very tight and gives 98% screening. The black vinyl cover is UV radiation, air-pollution and seawater resistant. The cable remains very flexible, even after years in sunlight. Attenuation is 2.32 dB per 100 feet at 30 MHz. You can recognise RF Systems coaxial cable at our RF Systems logo, which is printed in white on the black vinyl cover. It is available in 100 mtrs reels, but most dealers sell it also per metre.
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