Codan Radio Radio Repeater Systems Training Guide - Manual (Page 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.