RG59
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). The 75 ohm impedance matches a dipole antenna in free space.
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.
The higher breakdown voltage of RG-59 allows for higher voltage use in scientific experiments.
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Construction
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Item
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Material
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Diameter
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Inch
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mm
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Inner Conductor
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Copper Clad Steel(CCS)/Bare Copper (CU)
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0.032
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0.81
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Dielectric
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Foam PE
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0.144
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3.66
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First Shield
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Bonded Aluminum Foil
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0.151
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3.86
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Second Shield
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Aluminum/Bare Copper/Tinned Copper Braid
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0.175
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4.44
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Jacket
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PVC
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0.240
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6.1
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Attenuation
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Frequency(MHz)
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Max Attenuation(Db/100ft)
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Max Attenuation(Db/100m)
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5
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0.90
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2.80
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55
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2.10
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6.70
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187
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3.60
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11.80
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211
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3.80
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12.50
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400
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5.10
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16.70
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500
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5.70
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18.70
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750
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7.00
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22.80
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860
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7.50
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24.60
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1000
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8.00
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26.30
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1500
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9.90
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32.50
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1800
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10.90
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35.60
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2200
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12.60
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41.20
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3000
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13.80
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45.20
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