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Configuration
Cable: Draka RFA-1/2-50 with low loss and UV-resistant PE sheath
Length: 20, 25, 30, 35, 40 meters, or other, on request
Connector A: Telegartner N-type, pin, J01020C0141
Connector B: Telegartner N-type, pin, J01020B0044
Connector protection: metal covers of connectors on the chain are installed to protect against moisture, dust and dirt
Sealing: heat-shrinkable tube on an adhesive basis
Structurally, RFA-1/2-50 cable consists of:
Structurally, the RFA 1/2″-50 cable (feeder) consists of:
- central conductor:
- dielectric: foamed polyethylene with a diameter of 12,1 mm
- outer conductor: corrugated copper tube with a diameter of 13,9 mm.
- protective shell: black, halogen-free polyethylene, 16 mm in diameter.
A unique feature of RFA series cables is a two-layer protective sheath consisting of a hard surface layer of HDPE and a softer layer of LDPE. This design provides the best protection for all operational influences without reducing the flexibility of the cable.
In addition, the foamed dielectric has an extremely high level of expansion and a special surface layer for additional protection.
Electrical characteristics of the RFA-1/2-50 cable
Wave resistance: 50±1 Ohm
Linear capacitance: 77,5 pF/m
Relative speed: 86%
Maximum frequency: 9800 MHz
Peak working HF voltage: 1,8 kV
Peak working power: 32 kW
Direct current resistance:
- internal conductor: 1,55 Ohm/km
- external conductor: 2,66 Ohm/km
Estimated losses for cables based on RFA-1/2-50 with connectors
| Frequency, MHz | Losses, dB/20m | Losses, dB/25m | Losses, dB/30m | Losses, dB/35m | Losses, dB/40m | Losses, dB/100m |
| 140 | 0,62 | 0,75 | 0,87 | 1,00 | 1,13 | 2,58 |
| 400 | 0,98 | 1,20 | 1,42 | 1,64 | 1,86 | 4,40 |
| 900 | 1,46 | 1,80 | 2,14 | 2,48 | 2,82 | 6,80 |
| 1500 | 1,90 | 2,35 | 2,80 | 3,25 | 3,70 | 9,00 |
| 1800 | 2,08 | 2,58 | 3,07 | 3,57 | 4,06 | 9,90 |
| 2000 | 2,20 | 2,73 | 3,25 | 3,78 | 4,30 | 10,50 |
| 2400 | 2,42 | 3,00 | 3,58 | 4,16 | 4,74 | 11,60 |
| 3000 | 2,74 | 3,40 | 4,06 | 4,72 | 5,38 | 13,20 |
| 4000 | 3,30 | 4,10 | 4,90 | 5,70 | 6,50 | 16,00 |
| 5000 | 3,80 | 4,70 | 5,60 | 6,50 | 7,40 | 18,00 |
| 5800 | 4,00 | 4,95 | 5,90 | 6,85 | 7,80 | 19,00 |
| 6000 | 4,20 | 5,20 | 6,20 | 7,20 | 8,20 | 20,00 |
| 8000 | 4,90 | 6,05 | 7,20 | 8,35 | 9,50 | 23,00 |
| 9000 | 5,30 | 6,55 | 7,80 | 9,05 | 10,30 | 25,00 |
Mechanical characteristics of the RFA-1/2-50 cable
Linear weight: 0,22 kg/m
Maximum tension force: 2000 N
Minimum bending radius, single: 70 mm
Minimum bending radius, repeated: 120 mm
Operating temperature range: -55...+85° C
Resistance to damage: 1,80 kg/mm
Bending moment: 4 Nm
Recommended distance between fasteners: 1 m.
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