Codan-radio Radio Repeater Systems Training Guide Manual do Utilizador descarregar pdf (Página 73)

RADIO REPEATER SYSTEM | TRAINING GUIDE

Appendix H: Examples of Cable & Connector Losses Page 65

APPENDIX H: EXAMPLES OF CABLE & CONNECTOR LOSSES

Coaxial Cable losses

Nominal Attenuation in dB per 100 meters of Cable (dB per 100 feet)

50 OHM CABLES 50 MHz 150 MHz 450 MHz 850 MHz

Type Meters (Feet) Meters (Feet) Meters (Feet) Meters (Feet)

RG-58 C/U 10.8 (3.30) 20.0 (6.10) 35.5 (11.75) 58.2 (17.75)

RG-188 A/U 25.9 (7.90) 43.5 (13.3) 68.3 (20.83) 87.5 (26.66)

RG-213/U 4.9 (1.50) 8.9 (2.70) 16.3 (4.97) 24.7 (7.53)

RG-8 FOAM 3.9 (1.20) 7.2 (2.20) 13.0 (3.98) 17.0 (5.20)

RG-303/U 8.8 (2.70) 15.1 (4.60) 27.6 (8.42) 37.0 (11.3)

RG-393/U 4.6 (1.40) 8.5 (2.60) 15.6 (4.75) 21.3 (6.50)

LDF4-50A 1.6 (0.48) 2.8 (0.84) 5.2 (1.57) 6.8 (2.06)

LDF5-50A 0.8 (0.26) 1.4 (0.44) 2.6 (0.79) 3.7 (1.12)

LDF7-50A 0.6 (0.17) 0.92 (0.28) 1.7 (0.53) 2.3 (0.71)

Estimated Coaxial Connector Losses

The attenuation caused by a coaxial connector is dependent on the exact type of connector used and

the mechanical quality of the connection itself. To avoid unnecessary complications most licensing

authorities accept the following values as being acceptable in calculating effective radiated power, fade

margins and path losses:

At 150 MHz 0.25 dB per connection.

At 450 MHz 0.50 dB per connection.

At 850 MHz 0.60 dB per connection.

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Codan-radio Radio Repeater Systems Training Guide Manual do Utilizador Página 73