Attenuation of Coaxial Transmission Lines

Attenuation of Coaxial Transmission Lines
	LMR-1200	LMR-900	LMR-600	1/2”	LMR-400	Belden	9914	RG214	LMR-240	Belden	LMR-200	LMR-195	RG-58/U
	LMR-1200	LMR-900	LMR-600	Superflex	LMR-400	9913F7	9914	RG213	LMR-240	RG8X	LMR-200	LMR-195	RG-58/U
Freq/Size	1.200”	0.870”	0.590”	0.520”	0.405”	0.405”	0.400”	0.405”	0.240”	0.242”	0.195”	0.195”	0.195”
30 MHz	0.209	0.288	0.421	0.561	0.7	0.8	0.8	1.2	1.3	2	1.8	1.8	2.5
50 MHz	0.272	0.374	0.547	0.73	0.9	1.1	1.1	1.6	1.7	2.5	2.3	2.3	3.1
150 MHz	0.481	0.658	0.964	1.29	1.5	1.7	1.7	2.8	3	4.7	3.9	4	6.2
220 MHz	0.589	0.803	1.18	1.58	1.8	2.1	2.1	3.5	3.7	6	4.8	4.8	7.4
450 MHz	0.864	1.17	1.72	2.32	2.7	3.1	3.1	5.2	5.3	8.6	6.9	7	10.6
900 MHz	1.27	1.7	2.5	3.41	3.9	4.4	4.5	8	7.6	12.8	9.9	9.9	16.5
1,500 MHz	1.69	2.24	3.31	4.57	5.1	6			9.9		12.7	12.9
Coax losses shown above are for 100 feet lengths. Loss is a length multiplier, so a 200 ft length would have twice the loss shown above and a 50 ft length would have half the loss. Keep cable installation lengths between radios and antennas as short as possible.