How to fit 12 volt power unit and masthead amplifier #diy #cable, #powerunit

Fitting a TV Aerial Splitter and 12V Power Unit – Complete Guide & Description Using a TV aerial splitter and a 12V power unit is common when distributing an aerial signal to multiple TVs or when powering a masthead amplifier. This setup helps maintain strong signal strength across your home, especially in weak signal areas. ⸻ 1. What Is an Aerial Splitter and Power Unit? Aerial Splitter: • A device that allows one aerial feed to be shared with multiple TVs. • Available in passive (no power) or active (amplified) versions. 12V Power Unit: • Provides power to a masthead amplifier (which boosts the signal at the aerial, usually on the roof or mast). • Typically installed indoors, it sends power up the coax cable to the amplifier without needing a separate power cable. ⸻ 2. Why Use a Masthead Amplifier and Power Unit? ✔ Boosts Weak Signals before they degrade in long cable runs. ✔ Ideal for rural or fringe reception areas. ✔ Reduces signal noise and interference. ✔ Lets you split signals to multiple TVs without losing quality. ⸻ 3. Fitting the Aerial Splitter and 12V Power Unit Tools and Materials Needed: • Coaxial cable (preferably WF100) • F-type or coax connectors (as needed) • Masthead amplifier (mounted near the aerial) • 12V power unit • Aerial splitter (if splitting to 2 or more TVs) • Cable stripper and screwdriver ⸻ Step-by-Step Installation: Step 1: Mount the Masthead Amplifier • Mount it as close to the aerial as possible. • Connect the aerial coax directly into the input of the amplifier. • The output cable goes down into your home to the power unit. Step 2: Install the 12V Power Unit Indoors • The coax from the masthead amplifier connects to the input of the power unit. • The power unit is then plugged into a mains socket (usually 13A fused plug). • Some power units include a TV outlet on the front or back. Step 3: Add a Splitter (If Needed) • If you’re feeding more than one TV: • Connect the output from the power unit into a passive splitter. • Ensure the splitter has DC pass-through on one port (to allow the power unit to reach the amplifier). • Connect each output to its own coax line going to individual TVs. ⸻ 4. Important Tips • Only one 12V power unit should be used per masthead amplifier. • Make sure the splitter has DC pass-through on the port connected to the power unit. • Use high-quality coaxial cable and connectors to avoid signal loss. • Keep cables away from mains power to reduce interference. • Don’t use an indoor signal booster instead of a masthead amp in weak signal areas—it boosts noise as well. ⸻ • Power travels up from the power unit to the amplifier. • Signal travels down and is then split to each TV. ⸻ 6. Summary ✔ The masthead amplifier boosts the signal at the aerial. ✔ The 12V power unit sends power to the amplifier through the coax cable. ✔ The splitter distributes the signal to multiple TVs. ✔ Only one power unit is required, and DC pass-through must be allowed on the splitter. ⸻ Would you like a realistic diagram to go with this, or a guide for fitting F-connectors to the cables?