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Cable design SLL-240-SF (Selteq Low Loss 240 Superflex)
Structurally cable SLL-240-SF consists of:
– Copper stranded central conductor 19x0,29 mm, with a total diameter of 1,4 mm
- internal dielectric made of foamed polyethylene with a diameter of 3,7 mm.
– the first shielding layer of copper foil on polyethylene tape
– the second shielding layer is a braid of 120 copper wires with 88% filling
– Outer protective shell made of UV-resistant PVC with a diameter of 5,4 mm
Electrical characteristics of the SLL-240-SF cable
Wave resistance: 50±3 Ohm
Linear capacitance: 74±2 pF/m
Relative speed: 87%
Shortening factor: 1,149
Test voltage: 4 kV
Shielding efficiency: ≥ 105 dB at a frequency of 100...2000 MHz
Losses and transmitted power of SLL-240-SF cable
| Frequency, MHz | Losses, dB/100m | Power, W |
| 140 | 9,5 | 195 |
| 450 | 17,6 | 107 |
| 900 | 25,3 | 72 |
| 1500 | 33,1 | 55 |
| 1800 | 36,5 | 50 |
| 2000 | 38,5 | 47 |
| 2400 | 42,5 | 43 |
| 3000 | 48,1 | 39 |
| 4000 | 56,9 | 33 |
| 5000 | 65,2 | 29 |
| 5800 | 69,2 | 27 |
| 6000 | 72,9 | 26 |
Comparison of SLL-240-SF with SLL-400 and SLL-400-SF
Mechanical characteristics of SLL-240-SF cable
Operating temperature range: -45...+70ºC
Minimum bending radius: 25 mm
Re-bending radius: 50 mm up to 15 cycles
Running weight: 4,4 kg/100 m
Packaging and labeling
The cable is marked SLL-240-SF SELTEQ LOW LOSS 240 SUPERFLEX 50 OHM
The cable is securely packed on a wooden drum Ø 390 x 265 mm, gross weight 23,5 kg. The standard of packaging is 500 m.
On request, the SLL-240-SF cable can be cut to shorter lengths.
Compatibility and analogues
The SLL-240-SF coaxial cable is part of the G30 cable group and is similar in size to the following widely used types of HF coaxial cables: 7808A, CNT-240, H 155, HPF 240, LMR-240, MRC-240 AFB, TZC 240 500 , WCX25.
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