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Coaxial Cables |  |
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Coaxial Cables
RG 58 URM(URM 76)
Application:
Often called coax for short, coaxial cables are a must-have for transmitting audio/video and broadband signals.
Getting the right type matters a lot if you want to send and receive data over distance without losing too much
signal strength along the way. The four main types you'll come across are RG6, RG58, RG59, and RG11.
Unlike RG59, RG58 is a separate coaxial cable type with a 50 Ohm impedance—lower than the 75 Ohm norm for
most coax cables. This lower impedance makes it ideal for amplifying low-frequency audio signals in radio and
two-way radio setups. RG58 is also commonly found in lab testing and measurement equipment.
Construction
| Inner conductor | Plain copper | 7x0.32mm |
|---|---|---|
| Dielectric | Lowdensity PE | Φ2.95±0.10mm |
| Outer conductor(shield) | Plain copper | 96x0.12mm |
| Shield coverage | 86% | |
| Sheath | PVC or LSZH | Φ5.00±0.10mm |
Electrical & Mechanical Characteristics
Impedance :50±3Ohm
Nominal capacitance :100pF/m
Velocity of propagation :66%
Insulation resistance :>2000Mohm.Km
Inner conductor resistance :32Ohm/Km
Outer conductor resistance :17.5Ohm/Km
Operating temperature range :-30°C-+70°C
Coppe rweight :15.4Kg/Km
Cable weight(approx.) :36.9Kg/Km
Screening effectiveness :>55dB
Attenuation
| Frequency(MHz) | Attenuation(dB/100m) | Attenuation(dB/100ft) |
|---|---|---|
| 50 | 9.4 | 2.87 |
| 100 | 13.5 | 4.12 |
| 200 | 19.9 | 6.07 |
| 400 | 29.2 | 8.9 |
| 500 | 33.2 | 10.12 |
| 600 | 36.8 | 11.22 |
| 860 | 45.6 | 13.9 |
| 1000 | 50.4 | 15.37 |
Return Loss
| 30-300MHz | >28dB |
|---|---|
| 300-600MHz | >24dB |
| 600-900MHz | >22dB |