Coaxial cable supplier you can rely on
When your RF link, CCTV run or lab experiment needs predictable signal performance, sourcing the right coaxial cable locally saves weeks of waiting and avoids costly returns. Communica carries a broad selection of coaxial cable types, connectors and accessory bundles that are practical for South African makers, tertiary labs and procurement teams. We combine deep stock, branch pickup from Samrand and Cape Town, and specialist advice so you get the correct cable for your application - fast.
Why buy coax from a local supplier
Local stock reduces lead times and delivers VAT invoices for institutional purchasing. Collect same-day from our Samrand head office or one of our branches. For product breadth, browse our shop-by-category to compare RG-6, RG-59 and low-loss RF cables side-by-side: Collections (Shop by Category).
Common coax types and when to use them
Below is a quick reference - choose based on frequency, loss budget and mechanical needs.
| Type | Typical use | Notes |
|---|---|---|
| RG-58 | Prototyping, short lab runs (VHF/UHF) | Flexible, higher loss at GHz |
| RG-59 | CCTV and low-frequency video | Thinner centre conductor, poorer high-frequency loss |
| RG-6 | Satellite, TV, mid-range RF | Lower loss than RG-59, common for installations |
| LMR-400 / Low-loss | Long runs, HF to microwave | Low attenuation, stiffer but better for antennas |
Specification callouts to check on datasheets
When comparing products, verify characteristic impedance (50 or 75 ohm), velocity factor, attenuation (dB/100m at frequency), shielding type (braid/foil) and cable diameter. For a direct comparison across stock, use our All Products index to inspect datasheets and compatible connectors: coaxial cable in stock.
Accessories and compatibility guidance
Match connectors to cable impedance: 50 ohm N, SMA and BNC (50 ohm) for RF, and 75 ohm BNC or F-type for broadcast/satellite. Consider pre-assembled leads, crimp kits or solder-on connectors depending on your workshop capabilities. We stock brands and tools across categories - see our brand index for preferred connector and tool manufacturers: Shop by Brand.
Quick compatibility tip: use Ohm's law basics to sanity-check impedance mismatches in your signal chain. For RF power handling and DC bias calculations, consult product datasheets listed in the product pages.
