Radio TV Video Supplier - Local Stock & Expert Support at Communica

Local availability and practical value for makers, students and installers

Find the radio, TV and video parts you need without long import delays. Communica offers deep local stock of connectors, coax, RF adapters, tuners, video modules and test tools so technicians, lecturers and makers can finish installs and projects on time. Shop with confidence knowing you can check stock, collect from Samrand, Pretoria CBD or Cape Town, and get VAT invoices and account quotes for tertiary labs and procurement teams.

Why choose a local radio-tv-video supplier?

• Immediate access to critical parts reduces project downtime and thesis delays.
• Hands-on advice from staff experienced with RF, AV and broadcast workflows.
• Branch pickup and stock checks avoid shipping surprises and long lead times.

What we stock - practical categories

Our catalogue covers the parts you’ll reach for most often: coaxial cable and connectors (BNC, SMA, F-type), RF adapters, antenna elements, video encoders/decoders, HDMI and SDI patching, enclosures, power supplies and bench test gear. Browse by category to see what’s in store: Collections or explore all products at All Products.

Specification callouts you need to check

When selecting components for RF and AV systems, verify connector type, impedance (50 vs 75 ohm), cable loss (dB/m), frequency range, and power handling. Below is a quick comparison table for common coax choices.

Need help matching impedance or choosing between BNC and SMA for a project? Our technical team can explain trade-offs so you pick the right parts the first time. Learn more about our history and service ethos: About Us.

Compatibility guidance and accessory bundles

For most AV/RF setups you’ll want connector adapters, test leads, termination loads and a compact spectrum analyser or signal generator. We assemble accessory bundles for classroom labs and field technicians - for example, a field kit might include SMA/BNC adapters, 1m LMR jumpers, a 75 ohm-to-50 ohm adapter, a calibrated terminator and a handheld power meter. Compare spec sheets and bundle options on our radio, TV and video Shop by Brand page: Shop by Brand.

Quick stock checks can be made online, or you can call your nearest branch-trading hours and branch locations are available here: Branches & Trading Hours.

If you prefer to act now, use prompts like Shop Now, Check Stock in Samrand, Compare Specs or Request a Quote when speaking with our team.

Selection tips, common calculations and real-world wiring

Selecting the right cable and connector comes down to impedance, frequency and run length. For signal budgeting use this simple formula for approximate insertion loss along a run: Loss(dB) = length(m) × loss_per_m(dB/m). For RF cascades remember that every connector and adapter adds insertion loss - treat adapters like short lengths of cable for calculations.

Example: budget for a 20 m video run

If RG-6 has ~0.25 dB/m loss at your frequency, a 20 m run adds ~5 dB loss. Add 0.5-1 dB per connector/adapter and ensure your camera or transmitter has adequate output/headroom. For critical links choose lower-loss cable such as LMR variants.

Simple wiring diagram (SDI over coax)

Camera SDI OUT --- BNC --- RG-6 (20m) --- BNC --- SDI IN (Recorder)

For RCA/analogue video replace connectors accordingly; for HDMI/HDBaseT use active extenders for long runs. When in doubt, request measured loss data or ask our team to recommend a run-specific solution.

Troubleshooting common issues

• No picture: check impedance mismatch (50 vs 75 ohm) and verify connectors are fully seated.
• Intermittent signal: look for damaged braid or poor crimps; replace suspect connectors first.
• High noise or dropouts: measure insertion loss and swap to lower-loss cable if necessary.

Availability, lead times and support for South African buyers

Communica keeps popular RF and AV lines in local stock to minimise lead times for South African customers. For larger orders or education purchases we provide quotes, invoices and account options to simplify procurement. If a part is out of stock we offer clear ETA information and alternatives so your project stays on track. Check stock online or contact your preferred branch to confirm availability and collection: Branches & Trading Hours.

Objection handling and warranty notes

Worried about compatibility or lead times? Our team will validate connector types and impedance before sale, suggest lower-loss alternatives when needed, and provide documented quotations for education customers. For any product-specific warranty or certification details we point you to the product datasheet or brand page so you have factual information before purchase; explore brands and ranges here: radio-tv-video.

Summary - why Communica for radio, TV and video parts

Choose a supplier that balances local stock, technical support and clear procurement processes. Communica provides the parts, tools and expertise South African makers, students and technicians rely on - with branch pickup, VAT invoices and account quoting to fit lab and project budgets. For a full browse of available components and accessories, start on our homepage: Communica Home.

Ready to compare specifications or request a quotation? Use prompts like Shop Now, Check Stock in Samrand, Compare Specs or Request a Quote when contacting us, and our team will help you choose the right solution for your radio, TV and video projects.