TV cable의 종류, loss, 가격

■TV 케이블 종류

 

 

TV cable

출처 :https://otadtv.com/cables/index.html#google_vignette

 

•Three types of coax cable (RG-6, RG-11, RG-59) can be used to connect an antenna to televisions. All TV coax cables have a 75 ohms (Ω) impedance and use F-type male connectors.

•RG-6 coax cable
This cable is the industry standard for home reception. RG-6 is available with 2, 3, or 4 layers of shielding. Three or four layers has better immunity from interference and is more sturdy and durable, but is a little more expensive and less flexible than dual shield. Outside cables should be quad shield (4 shield layers).

•RG-11 coax cable
This cable can be used if signal loss is a problem, typically a long cable run. The advantages of RG-11 are it has the least loss, and is available with 2, 3, or 4 layers of shielding. It can also carry high power signals. The disadvantages are it's more expensive, less flexible, bigger and heavier. This cable is primarily designed for high power transmissions and long cable runs.

•RG-59 coax cable
This cable can be used, but is a little more lossy and has only a single layer of shielding. RG-59 is usually used indoors for raw video signals (recorders, games, etc.). RG-59 was used for over-the-air TV (and cable / satellite systems) before RG-6 became common.

 

한국에서 TV 동축케이블로 불리는 것의 정식명칭이 RG-6, RG-59, RG-11임. 보통 RG-6, RG-59를 주로 TV cable 용도로 사용함. 

 

■ 신호 손실

신호 전력 손실 측면에서 RG-11이 가장 우수함.

RG-11 > RG-6 > RG-59   

 

 

출처 :https://otadtv.com/cables/index.html#google_vignette

 

RG-6 케이블이 RG-59보다 신호 loss측면에서  우수함.

 

 

 

100m 케이블의 경우, 2000MHz 대역에서

RG-6 loss : 35dB

RG-59 loss : 45dB

RG-11 loss : 22dB

LMR-400 loss: 19dB

 

 

■  가격

 

제조사마다 가격차이가 있어서 찾아보면 더 싸게 구할 수도 있을듯 하다. 

하지만 RG-6와 LMR-400의 가격차이는 대략 8배는 나는 것으로 보임.

RG-6 케이블 300m가 36만7천원

 

RG-11 케이블 300m가 70만

LMR400 케이블 100m가 78만원 > 300m 240만원