Semi-Finished Coaxial Cable
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Thin 50 Ohm Core for GPS Antenna and RF Module Wiring
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Semi-Finished Coaxial Cable RG8
50 Ohm Core for High Power RF and Radio Transmission
Product Overview
What This Product Is
RG8 is the 50 ohm heavy RF core: solid conductor, foamed insulation and the shield configuration you specify, with the outer jacket left for your line. A maximum operating voltage of 1900 V RMS and a DC to 1 GHz working range put it in two-way radio, base station feeds and industrial high-frequency links. Manufacturers order the core when the finished cable has to carry their own jacket compound, colour and branding.
Semi-Finished Coaxial Cable
Key Benefits
What It Gives Your Production Line
Rated for High Power Work
1900 V RMS maximum operating voltage suits transmitter feeds and repeater systems rather than signal-only runs.
Low Capacitance for Efficient Transfer
Around 86.6 pF/m keeps loading low on long RF feeder runs.
Velocity Tuned by Dielectric Choice
Propagation velocity of 66 to 80 percent depending on the dielectric, with foamed PE at the higher end.
Reel Lengths for Assembly Shops
300 m, 500 m or 1000 m reels, with custom labelling or project branding on request.
Application Scenarios
Where It Is Used
- Two-way radio transmission
- Antenna and base station connections
- RF and microwave signal transmission
- Industrial high-frequency communication systems
- Repeater systems in data and voice networks
Who It Is For
Who Buys It
- RF cable assembly shops building antenna feeders
- Manufacturers supplying radio and broadcast integrators
- Plants that jacket and connectorise 50 ohm cable in-house
Problems It Solves
The Reasons Buyers Move To This Product
50 Ohm Volume Is Lower Than 75 Ohm
Few plants can justify a dedicated 50 ohm foaming run. Core supply covers the orders you would otherwise decline.
Assembly Work Needs Clean Cores
Connectorised assemblies fail when the dielectric is deformed or the shield is contaminated. Film-wrapped reels arrive ready to strip.
Jacket Colour Identifies the Brand
Buying unjacketed keeps jacket colour, print and compound entirely in your control.
Technical Features
Construction And Materials
- Dielectric: foamed PE
- Conductor: BC, CCA, CCS or CCAM
- Shield: foil + braid, tri-shield or quad-shield
- Foil: aluminium or copper
- Braid: BC, CCA, AL or TC, 40 to 95 percent
- Core structure only, jacket applied downstream
Certifications And Compliance
No product certification is claimed for this item beyond the standards named in the specification table. Where a specific certificate is required for your market, ask before ordering and we will confirm what can be provided.
Specifications
Published Figures
| Characteristic Impedance | 50 Ω |
|---|---|
| Capacitance | ~26.4 pF/ft (~86.6 pF/m) |
| Velocity of Propagation | 66–80% depending on dielectric |
| Attenuation @ 100 MHz | ~2.2 dB/100 ft (~7.2 dB/100m) |
| Maximum Operating Voltage | 1,900 V RMS |
| Frequency Range | DC – 1 GHz or higher |
| Length per Reel | 300 m / 500 m / 1000 m, customisable |
| Reel Type | Plastic, ABS or wooden reels |
| Net Weight | ~25–35 kg per 500 m |
| Outer Jacket | Not included |
Figures are the published specification for this product. Values outside this table are confirmed in writing before order rather than estimated.
Manufacturing And Quality Control
How It Is Produced And Checked
Production runs from conductor preparation — rod drawing, annealing, stranding and surface cleaning — through foamed insulation extrusion with controlled cell size and on-line diameter monitoring, then foil wrapping and braiding to the shield specification ordered. The line stops before jacket extrusion.
Conductor Preparation
Rod drawing, annealing and surface cleaning so the insulation bonds without microvoids.
Insulation Monitoring
Insulation thickness and concentricity monitored continuously on line during extrusion.
Shield Verification
Foil overlap and braid coverage checked against the ordered shield construction.
Electrical Spot Check
Impedance and attenuation sampled against the published values for the construction.
Reel Packing
Reels wrapped in plastic film against moisture and dust, then cartoned or palletised.
Customisation Options
What Can Be Changed
- Conductor and braid material
- Shield depth and braid coverage
- Reel length 300 m, 500 m or 1000 m
- Plastic, ABS or wooden reels
- Custom labels or project branding
Use Guide
Working With It On Your Line
- Strip test a short sample before production — foamed dielectric strips differently from solid PE.
- Keep reels upright in storage so the core does not flatten against the flange.
- For high-power assemblies, confirm braid coverage on the reel label; coverage drives shielding effectiveness.
- Wrap cut ends immediately to keep moisture out of the dielectric.
Comparison
How It Compares Within The Range
Semi-Finished Coaxial Cable RG8 sits inside the Semi-Finished Coaxial Cable range. The products below are the closest alternatives or the parts most often ordered alongside it — compare the published specification tables rather than the descriptions when the choice is close.
Read Next
Applications Solutions And Guides
FAQ
Semi-Finished Coaxial Cable RG8 FAQ
Why choose RG8 over a 75 ohm core?
RG8 is a 50 ohm construction intended for RF power, antenna feeds and radio systems, where 75 ohm cable would mismatch the equipment.
What voltage can it handle?
Maximum operating voltage is 1,900 V RMS, suited to high-voltage RF environments.
Which reel lengths are standard?
300 m, 500 m and 1000 m, with other lengths produced to order.
Can you put our labels on the reels?
Yes. Custom labels or project branding are applied on request.
What is the attenuation at 100 MHz?
Roughly 7.2 dB per 100 m, equivalent to about 2.2 dB per 100 ft.
Request A Quotation For Semi-Finished Coaxial Cable RG8
Send the construction, grade and quantity you need. We confirm the specification in writing before quoting.