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Coax Charts
Attenuation and Power Ratings

An Online Coax Loss Calculator

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

 .26 .83 1.9 2.7 4.1 5.9 6.5 9.8 23.0 32.0

8 MINI, 8X

   1.1 2.5 3.8 5.4 7.9 8.8 13.0 26.0  

LMR -240

 .24 .76 1.7 2.4 3.4 4.9 7.5 7.9 14.2 18.7

8, 8A, 10A, 213

 .15 .55 1.3 1.9 2.7 4.1 7.5 8.0 16.0 27.0

9913,9086,9096

     0.9 1.4 1.8 2.6 4.2 4.5   13.0

4XL8IIA,FLEXI 4XL

     0.9 1.4 1.8 2.6 4.2 4.5   13.0

LMR-400

     .9 1.2   2.5 4.1 4.3    

LMR-500

     .7 1.0   2.0 3.2 3.4    

LMR-600

     .6 .8   1.4 2.5 2.7    

8214

   .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

 .21 .66 1.5 2.3 3.3 5.0 7.8 8.8 18.0 27.0

11,11A,12,12A,13,13A,216

 .19 .66 1.6 2.3 3.3 4.8   7.8 16.5 26.5

14,14A,217

 .12 .41 1.0 1.4 2.0 3.1   5.5 12.4 19.0

17,17A,18,18A,218,219

 .06 .24 .62 .95 1.5 2.4   4.4 9.5 15.3

55B,223

 .30 1.2 3.2 4.8 7.0 10.0 14.3 16.5 30.5 46.0

58

 .33 1.2 3.1 4.6 6.9 10.5 14.5 17.5 37.5 60.0

58A,58C

 .44 1.4 3.3 4.9 7.4 12.0 20.0 24.0 54.0 83.0

59,59B

 .33 1.1 2.4 3.4 4.9 7.0 11.0 12.0 26.5 42.0

62,62A,71A,71B

 .25 .85 1.9 2.7 3.8 5.3 8.3 8.7 18.5 30.0

62B

 .31 .90 2.0 2.9 4.2 6.2   11.0 24.0 38.0

141,141A,400,142,142A

 .30 .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

   .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

 .06 .21 .47 .68 .98 1.4 2.2 2.3 4.3 5.9

LDF5-50A

 .03 .11 .25 .36 .53 .78 1.2 1.4 2.5 3.5

 Coaxial Cable Power Ratings
Watts at MHz

RG/U CABLE

1.0 10 50 100 200 400 900 1000 3000 5000

55,6A,212

4000 1500 800 550 360 250   150 65 50

8 MINI,8X

4000 1500 800 550 360 250   150 65 50

8,8A,10A,213

11000 3500 1500 975 685 450   230 115 70

9913,9086,9096

  3500 1500 975 685 450   230 115 70

4XL8IIA,FLEXI 4XL

  3500 1500 975 685 450   230 115 70

9095

11000 3500 1500 975 685 450   230 115 70

9,9A,9B,214

9000 2700 1120 780 550 360   200 100 60

11,11A,12,12A,
13,13A,216

8000 2500 1000 690 490 340   200 100 60

14,14A,217

20000 6000 2400 1600 1000 680   380 170 110

17,17A,18,18A,
218,219

50000 14000 5400 3600 2300 1400   780 360 230

55B,223

5600 1700 700 480 320 215   120 60 40

58

3500 1000 450 300 200 135   80 40 20

58A,58C

3200 1000 425 290 190 105   60 25 20

59,59B

3900 1200 540 270 270 185   110 50 30

62,62A,71A,71B

4500 1400 630 440 320 230   140 65 40

62B

3800 1350 600 410 285 195   110 50 31

141,141A,400
142,142A

19000 9000 3500 2400 1600 1100   650 350 245

174

1000 350 160 80 80 60   35 15 10

178B,196A

1300 640 330 240 180 120   75 40 -

188A,316

1500 770 480 400 325 275   150 80 53

179B

3000 1400 750 480 420 320   190 100 73

393,235

  25000 9500 6300 4300 2800   1700 880 620

402

  9000 3500 2400 1600 1100   650 350 245

405

              130    

LDF4-50A

19000 6100 2600 1880 1310 906 563 551 294 217

LDF5-50A

44000 7700 7740 5380 3720 2550 1620 1520 785 568

 



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