Coaxial Cable Attenuation Charts

A compilation of some of the most common coaxial cable attenuation.

Nominal attenuation of 30.5 meters (100ft)
Cable Type 70-85 Mhz 148-174 Mhz 400-520 Mhz 806-960 Mhz 2.4-2.45 Ghz 5.8-5.85 Ghz
RG178B/U 12.4 dB 17.0 dB 30.4 dB 40.8 dB
RG179 9.2 dB 11.5 dB 17.0 dB 22.3 dB
RG174/U 7.8 dB 10.8 dB 19.2 dB 26.9 dB
RG58C/U 4.6 dB 7.1 dB 13.5 dB 18.2 dB
CELLFOAM ™ 4.1 dB 5.6 dB 9.8 dB 13.2 dB
CELLFOIL ™ 2.8 dB 4.2 dB 6.9 dB 9.0 dB
RG142B/U 3.3 dB 4.9 dB 8.9 dB 12.0 db
RG223/U 4.2 dB 5.7 dB 10.0 dB 13.7 dB
RG59B/U 3.1 dB 4.9 dB 9.0 dB 13.2 dB
RG62A/U 2.3 dB 3.4 dB 5.9 dB 8.0 dB
RG11/U 1.8 dB 2.5 dB 4.8 dB 5.6 dB
RG213/U 2.0 dB 2.6 dB 5.0 dB 7.4 dB
RG214/U 1.9 dB 2.6 dB 5.0 dB 7.4 dB
10D-FB Type 0.9 dB 1.2 dB 2.4 dB 3.1 dB
RG8 Type 1.2 dB 1.7 dB 3.1 dB 4.5 dB 7.0 dB 10.6 dB
1/4″ Superflex 1.3 dB 2.2 dB 4.2 dB 5.6 dB 9.9 dB 15.8 dB
3/8″ Superflex 1.1 dB 1.5 dB 2.8 dB 3.8 dB 6.9 dB 10.9 dB
1/2″ Superflex 0.8 dB 1.3 dB 2.4 dB 3.4 dB 5.9 dB 10.2 dB
1/4″ HELIAX ® 1.1 dB 1.5 dB 2.7 dB 3.6 dB 5.8 dB 11.2 dB
3/8″ HELIAX ® 0.9 dB 1.3 dB 2.3 dB 3.3 dB 5.7 dB 9.5 dB
1/2″ HELIAX ® 0.6 dB 0.8 dB 1.6 dB 2.2 dB 3.7 dB 5.9 dB
7/8″ HELIAX ® 0.3 dB 0.5 dB 0.9 dB 1.3 dB 2.3 dB
7/8″ HELIAX ® 0.3 dB 0.4 dB 0.8 dB 1.1 dB 2.0 dB
7/8″ HELIAX ® 0.3 dB 0.4 dB 0.9 dB 1.2 dB 2.1 dB
13″ HELIAX ® 0.2 dB 0.3 dB 0.6 dB 0.9 dB 1.6 dB
1θ” HELIAX ® 0.2 dB 0.3 dB 0.5 dB 0.7 dB 1.4 dB




Coaxial Cable Attenuation Ratings
Nominal attenuation dB/100 feet at (Mhz)

RG/U CABLE 1.0 10 50 100 200 400 900 1000 3000 5000
6A,212 0.26 0.83 1.9 2.7 4.1 5.9 6.5 9.8 23.00 32.00
8 MINI,8X 1.1 2.5 3.8 5.4 7.9 8.8 13.0 26.0
LMR-240 0.24 0.76 1.7 2.4 3.4 4.9 7.5 7.9 14.2 18.7
8,8A,10A,213 0.15 0.55 1.3 1.9 2.7 4.1 7.5 8.0 16.0 27.00
9913,9086,9096 0.9 1.4 1.8 2.6 4.2 4.5 13.00
4XL8IIA,FLEXI 4XL 0.9 1.4 1.8 2.6 4.2 4.5 13.00
LMR-400 0.9 1.2 2.5 4.1 4.3
LMR-500 0.7 1.0 2.0 3.2 3.4
LMR-600 0.6 0.8 1.4 2.5 2.7
8214 0.60 1.2 1.7 2.7 4.2 7.8 14.2 22.0
9095 1.0 1.8 2.6 3.8 6.0 7.5
9,9A,9B,214 0.21 0.66 1.5 2.3 3.3 5.0 7.8 8.8 18.0 27.0
11,11A,12,12A,13,13A,216 0.19 0.66 1.6 2.3 3.3 4.8 7.8 16.5 26.5
14,14A,217 0.12 0.41 1.0 1.4 2.0 3.1 5.5 12.4 19.0
17,17A,18,18A,218,219 0.6 0.24 0.62 0.95 1.5 2.4 4.4 9.5 15.3
55B,223 0.3 1.2 3.2 4.8 7.0 10.0 14.3 16.5 30.5 46.0
58 0.33 1.2 3.1 4.6 6.9 10.5 14.5 17.5 37.5 60.0
58A,58C 0.44 1.4 3.3 4.9 7.4 12.0 20.0 24.0 54.0 83.0
59,59B 0.33 1.1 2.4 3.4 4.9 7.0 11.0 12.0 26.5 42.0
62,62A,71A,71B 0.25 0.85 1.9 2.7 3.8 5.3 8.3 8.7 18.5 30.0
62B 0.31 0.90 2.0 2.9 4.2 6.2 11.0 24.0 38.0
141,141A,400,142,142A 0.30 0.90 2.1 3.3 4.7 6.9 13.0 26.0 40.0
174 2.3 3.9 6.6 8.9 12.0 17.5 28.2 30.0 64.0 99.0
178B,196A 2.6 5.6 10.5 14.0 19.0 28.0 46.0 85.0 100
188A,316 3.1 6.0 9.6 11.4 14.2 16.7 31.0 60.0 82.0
179B 3.0 5.3 8.5 10.0 12.5 16.0 24.0 44.0 64.0
393,235 0.6 1.4 2.1 3.1 4.5 7.5 14.0 21.0
402 1.2 2.7 3.9 5.5 8.0 13.0 26.0 26.0
405 22.0
LDF4-50A 0.06 0.21 0.47 0.68 0.98 1.4 2.2 2.3 4.3 5.9
LDF5-50A 0.03 0.11 0.25 0.36 0.53 0.78 1.2 1.4 2.5 3.5




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