TV common sense science series: a picture tells you what the cable signal is

Cable TV is a word familiar to all of us and it has been accompanied by people for more than 10 years. Usually cable TV transmits signals through a white RF cable to watch TV programs, and it is still the main home television access method. The earliest batches of set-top boxes are also connected through this type of access, and then connected to the television by the component live AV cables of the set-top boxes.



However, the use of cable-based television programs still belongs to analog signals does not mean that can directly watch high-definition programs, plus the set-top box is only the analog signal into a digital signal. Some digital HDTV stations that are currently being tested are only tested, and it may be necessary to truly watch digital HDTV channels.


galvanized steel pole

1.Shape:Conical ,Multi-pyramidal,Columniform,polygonal or conical

2.Material:steel plate.stainless steel compound plate,stainless steel plate,ect.(anticorrosion treatment with hot galvanization,also color polyester power could be coated on the surface)

High strength low alloy steel Q235,Q345,GR65,GR50 to ensure the mechanical properity of microelement in order to ensure the quality of galvanization (other materials are also avaliable on request)

3.Jointing of pole with insert mode,innerflange mode,face to face joint mode

4.Design of pole :against earthquake of 8 grade ,aganist wind pressure of 160

5.Minimum yield strength:355 mpa

6.Minimum ultimate tensile strength :490 mpa

7.Max ultimate tensilestrength:620 mpa

8.Certificate:ISO9001-2000

9.Length:Within 14m once forming without slip joint

10.Welding:It has past flaw testing.Internal and external double welding makes the welding beautiful in shape

11:Packages:Our poles as normal cover by Mat or straw bale at the top and bottom ,anyway also can following by client required , each 40HC or OT can loading how many pcs will calculation base on the client actually specification and data

Our lighting equipment are made from quality sheet from bending,forming,automatic welding and hot galvanization.We can reach one-run machining length of 14m,and can bend sheet thickness up to 25mm.We adopt advanced welding procedures ,automatically weld main joints and reach rank-II welding quality.

electric pole

Galvanized Steel Pole,Galvanized Steel Electric Pole,Monopole Galvanized Steel Electric Pole,Galvanized Steel Street Lighting Poles

YIXING FUTAO METAL STRUCTURAL UNIT CO.,LTD( YIXING HONGSHENGYUAN ELECTRIC POWER FACILITIES CO.,LTD.) , https://www.chinasteelpole.com