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Cable design SLL-300 (Selteq Low Loss 300)
constructively cable SLL-300 consists of:
– One-piece central core with a diameter of 1.78 mm made of aluminum wire with a copper coating
– internal dielectric made of foamed polyethylene with a diameter of 4.83 mm.
– the first shielding layer made of aluminum foil
- the second shielding layer - tinned copper braiding
– Outer protective sheath made of polyethylene (PE) with a diameter of 7.62 mm
Electrical characteristics of the SLL-300 cable
Wave resistance: 50±2 Ohm
Linear capacitance: 79.1 pF/m
Relative speed: 85%
Shortening factor: 1,1
Shielding efficiency: ≥ 90 dB
Attenuation table for SLL-300 cable
| Frequency, MHz | Losses, dB/100m | Power, kW |
| 30 | 3,5 | 1,78 |
| 50 | 4,5 | 1,38 |
| 150 | 7,9 | 0,79 |
| 220 | 9,6 | 0,65 |
| 450 | 13,8 | 0,45 |
| 900 | 19,9 | 0,31 |
| 1500 | 26,0 | 0,24 |
| 1800 | 28,7 | 0,22 |
| 2000 | 30,3 | 0,21 |
| 2500 | 34,2 | 0,18 |
| 5800 | 54,3 | 0,11 |
Mechanical characteristics of SLL-300 cable
Operating temperature range: -40...+80o
Minimum bending radius: 38 mm
Packaging and labeling
The cable is securely packed on a wooden drum. The standard of packaging is 500 m.
On request, the SLL-300 cable can be cut to shorter lengths.
Compatibility and analogues
The SLL-300 coaxial cable is part of the G56 cable group and is similar in size to the following widely used types of HF coaxial cables: 5D-FB PVC, LMR-300.
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