Coax / LDF / FSJ, Feedline Loss/Attenuation in Amateur and ISM Bands in dB - 100 ft (dB - 100 m)
figures are for Matched Feedline, Loss/Attenuation is greater with SWR
| Cable Type | 50 MHz | 144 MHz | 220 MHz | 450 MHz | 915 MHz | 1.2 GHz | 2.4 GHz | 5.8 GHz |
| RG-58A | 3.2 (10.4) |
6.2 (20.3) |
7.4 (24.3) |
10.6 (34.8) |
16.5 (54.1) |
21.1 (69.2) |
32.2 (105.6) |
51.6 (169.2) |
| RG-59 | 2.4 (7.7) |
4.1 (13.4) |
5.1 (16.9) |
7.6 (24.6) |
- (-) |
- (-) |
20.1 (66.0) |
- (-) |
| RG-6U CATV | 1.2 (3.8) |
2.2 (7.2) |
2.9 (9.3) |
4.5 (14.6) |
- (-) |
- (-) |
15.0 (50.0) |
- (-) |
| RG-11 | 1.4 (4.5) |
2.4 (7.9) |
3.0 (9.9) |
4.4 (14.6) |
- (-) |
- (-) |
12.1 (39.5) |
- (-) |
| 9258 (RG-8/X) | 2.1 (7.0) |
4.7 (15.4) |
6.0 (19.7) |
8.6 (28.2) |
12.8 (42.0) |
15.9 (52.8) |
23.1 (75.8) |
40.9 (134.2) |
| LMR-240 | 1.7 (5.7) |
3.0 (9.8) |
3.7 (12.1) |
5.3 (17.4) |
7.6 (24.9) |
9.2 (30.2) |
12.9 (42.3) |
20.4 (66.9) |
| RG-213/214 | 1.4 (4.7) |
2.8 (9.2) |
3.5 (11.5) |
5.2 (17.1) |
8.0 (26.2) |
10.1 (33.1) |
15.2 (49.9) |
28.6 (93.8) |
| 9913 | 0.8 (2.8) |
1.6 (5.2) |
1.9 (6.2) |
2.8 (9.2) |
4.2 (13.8) |
5.2 (17.1) |
7.7 (25.3) |
13.8 (45.3) |
| LMR-400 | 0.88 (2.8) |
1.5 (4.7) |
1.8 (5.9) |
2.7 (8.9) |
3.9 (12.8) |
4.8 (15.7) |
6.8 (22.3) |
10.8 (35.4) |
| 1/4"FSJ1-50 Velocity 84% |
1.1 (3.6) |
2.2 (7.2) |
3.1 (10.2) |
4.2 (13.8) |
- (-) |
- (-) |
- (-) |
- (-) |
| 3/8"LDF2-50 | 0.7 (2.4) |
1.3 (4.3) |
1.6 (5.2) |
2.3 (7.5) |
3.4 (11.2) |
4.2 (13.8) |
5.9 (19.4) |
8.1 (26.6) |
| 3/8"FSJ2-50 Velocity 83% |
0.8 (2.8) |
1.5 (4.7) |
1.8 (6.0) |
2.6 (8.7) |
3.9 (12.7) |
4.5 (14.8) |
6.6 (21.8) |
11.0 (36.0) |
| LMR-600 | 0.5 (1.8) |
0.96 (3.1) |
1.2 (3.9) |
1.7 (5.6) |
2.5 (8.2) |
3.1 (10.2) |
4.4 (14.4) |
7.3 (23.9) |
| 1/2"FSJ4-50 Velocity 81% |
0.7 (2.4) |
1.2 (4.1) |
1.6 (5.2) |
2.3 (7.6) |
3.4 (11.2) |
4.0 (13.0) |
6.0 (19.6) |
10.2 (33.7) |
| 1/2"LDF4-50 Velocity 88% |
0.5 (1.5) |
0.85 (2.8) |
1.1 (3.6) |
1.5 (4.9) |
2.2 (7.2) |
2.7 (8.9) |
3.9 (12.8) |
6.6 (21.6) |
| 7/8"LDF5-50 | 0.25 (0.8) |
0.46 (1.5) |
0.56 (2.1) |
0.83 (2.7) |
1.2 (3.9) |
1.5 (4.9) |
2.3 (7.5) |
3.8 (12.5) |
| 1 1/4" LDF6-50 | 0.17 (0.58) |
0.34 (1.1) |
0.42 (1.4) |
0.62 (2.0) |
0.91 (3.0) |
1.1 (3.6) |
1.7 (5.6) |
2.8 (9.2) |
| 1 5/8" LDF7-50 | 0.14 (0.47) |
0.28 (0.92) |
0.35 (1.1) |
0.52 (1.7) |
0.77 (2.5) |
0.96 (3.1) |
1.4 (4.6) |
2.5 (8.2) |
LDF4-50A, Andrew HELIAX® Low Density Foam Coaxial Cable, corrugated
copper, 1/2 in, black PE jacket
Diameter Over Jacket 15.875 mm | 0.625 in
Cable Impedance 50 ohm ±1 ohm
Capacitance 23.1 pF/ft | 75.8 pF/m
Velocity 88%
FSJ4-50B, Andrew HELIAX® Superflexible Foam Coaxial Cable, corrugated
copper, 1/2 in, black PE jacket
Diameter Over Jacket 13.462 mm | 0.530 in
Cable Impedance 50 ohm ±1 ohm
Capacitance 25.2 pF/ft | 82.7 pF/m
Velocity 81%
FSJ2-50, Andrew HELIAX® Superflexible Foam Coaxial Cable, corrugated
copper, 3/8 in, black PE jacket
Diameter Over Jacket 10.668 mm | 0.420 in
Cable Impedance 50 ohm ±1 ohm
Capacitance 24.3 pF/ft | 79.7 pF/m
Velocity 83%
FSJ1-50A, Andrew HELIAX® Superflexible Low Density Foam Coaxial Cable,
corrugated copper, 1/4 in, black PE jacket
Diameter Over Jacket 7.366 mm | 0.290 in
Cable Impedance 50 ohm ±1 ohm
Capacitance 24.2 pF/ft | 79.4 pF/m
Velocity 84%