2 x coaxial plugs in my box, what is that?

one comes and goes in waves I guess it is, but I thought that only connected devices to be affected by power outages. Why matter inputs and outpus: and you have to use all means?

It is by power surges. If lightning struck a power line and cable was connected to that line, then a wave would go through the coaxial cable and damage the case television or cable. The input of your cable (from wall) must enter the "in" and then a new cable "a" goes to your cable box (or directly to the TV if you have a box.

Updated Coax cable RG6 stripping and crimping tutorial

New Ideal 17 Piece Data And Video Installation Kit Data/Video Kit Data T-Cutter 7-in-1 Screwdriver UTP Stripper Coax Stripper w/ replacement Cartridge Punchmaster II Punch Down Tool w/ 110 Blade 110/66 Blade combo punch down blade Crimpmaster Crimp Tool for RJ-45 Modular Plug OmniSeal XL Compression Tool Probe Pic and Spudger F/BNC Connector Insertion/Removal Tool VDV Multimedia Cable Tester Amplifier Probe Electrician's Scissors w/ Stripping Notc...

JR Products 47835 Coax Stripping Tool $22.81 ...

New-Coax Stripmaster Wire Stripper - RG-6 - T39681 $46.65 IDEAL WIRE STRIPPER FORRG-59 COAX CABLE RG-59 COAX CABLEEnhance productivity with 1 step stripping For stripping outer jacket and dielectric of coaxDie-cast frame and precision ground knife-type blades Spring action to increase leverage and reduce fatigue For RG-59...

DataShark 70029 Universal Cutter/Stripper for Flat or Round TV/UTP Cable $11.98 Complete combination cutter/stripper to handle all of your smart home installations. Cuts and strips both coaxial and data cable....

DataShark 70018 Cable TV F Compression Bundle with Cable Cutter, Coax Stripper, Compression Crimper, and 10 RG6/RG6-Quad Cable TV F Connectors $34.99 DataShark Compression Crimp Bundle...

Paladin 4910 SealTite Pro Compression Cable TV F Kit wi th KT 8, LC CST, Flaring Tool, SealTite Pro and 10 RG6/RG6Q in Zipper Case $82.99 Paladin SealTite Pro Compression Crimp Kit The new SealTite Pro Compression Crimp Kit is a complete selection of professional quality tools for terminating RG6 or RG6 Quad Coax for Cable TV, Satellite TV, HDTV or Cable Modem applications. This extraordinary kit contains SealTite Pro Crimper, LC CST Coax Stripping Tool, Flaring Tool, KT 8 Round Cable Cutter, 10 RG6/RG6Q Plugs in Compact Zipper Case...

Ideal 45-520 Coax 3 Step BNC/TNC Connection Stripper $6.40 Ideal Industries 45-520 3 STEOP COAX STRIPPER BLACK...

Coax Stripmaster® Wire Stripper $24.80 Enhance productivity with 1 step stripping For stripping outer jacket and dielectric of coaxDie-cast frame and precision ground knife-type blades Spring action to increase leverage and reduce fatigue For RG-6 quad shield...

Cables To Go - 04592 - Tri-Blade Coaxial RG59/RG6 Cable Stripper $7.79 STRIPS RG-58 RG-59 & RG-6 COAXIAL CABLESTRIPS AT 4MM & 8MM LENGTHSNO NEED TO ADJUST BLOCK WHEN CHANGING CABLE TYPESUPC : 757120045922Shipping Dimensions : 7.25in X 4.75in X 1.00inEstimated Shipping Weight : 0.2075...

Coax Compression Connector Kit 30 pcs RG6/RG6 Quad F Connectors with Tool & Stripper $39.95 This is a complete kit for making or repairing RG6 coax cables. Includes a Universal F type Coax Connector Compression/Crimping Tool. 2-Blade Adjustable RG59 and RG6 Coax Stripper Tool. 30 - RG6/RG6 Quad F Compression Connectors Internal O-Ring Waterproof Seal. Includes adapters for use on different compression connectors of varying lengths (19.3mm, 20.3mm, and 21mm). Connectors supplied use the...