COAX TABLE

Coax Table

and other transmission lines

# (not in	impedance	attenuation per 100' multiply by 3.2 for 100meters	dB	velocity	max voltage
strict order)	ohms Z	@ 50MHz	@ 1GHz	(material)	KV RMS
RG4	50	11.7@400MHz		66 (polyethlene)	1.9 kV
RG5	52	1.5@30MHz 7@400MHz	11.5	66 (polyethlene)	3 kV
RG6U	75	0.8@10MHz, 1.5 dB	7@400MHz, 11B	78% (foam)	2.7 kV
RG6catv "6 SERIES" "SERIES 6"	75	0.6@5MHz, 1.6@55MHz 4@400MHz	4.7@550MHz, 6.5 8.75@1.75GHz	83 (Foam Polyethylene) shield: Aluminum Foil, Aluminum Braid	0.35 center: copper clad steel 18AWG
RG7U	62	1.5@30MHz	6@400MHz 8.9	84
RG8U	52	1.2	9	66 (polyethlene)	5 kV
RG8U	50	1.1		78 (foam)	0.6
ethernet* (yellow thick net)	50	0.37@5MHz, 1.0	3.@400MHz 6.9 13@3GHz	78 (Polyethylene foam)	0.3KV (it may say 50V but that's to make the fire marshal happy)
ethernet* (orange thick net) plenum	50	0.37@5MHz, 0.99	3.04@400MHz 7.2	78 (FFEP foam)	0.3KV (it may say 50V but that's to make the fire marshal happy)
RG8X	50	1.1@10MHz 2.5	8@400MHz 13.5		2.5
RG9	51	0.9@30MHz 5.9@400MHz	8.5	66 (polyethlene)	4
RG9U	51	1.6		66 (poly)	5
RG10	51	6@400MHz	8.5	66 (polyethlene)	4
RG11U	75	1.3	8.2	66 (poly)	5
RG11U	75	1.0	5.5	83 (foam teflon)
RG11U	75	1.0	4.3	84 (foam)	0.6
RG12/U	75	4.7@400MHz, 8.2	66	66 (polyethlene)	4
RG13U	74		4.7@400MHz, 8.2	66	5KV
RG14U	52		3.5@400MHz, 6	66	7KV
RG15U	76		3.6@400MHz, 6.5	66	KV
RG16U	52		4.4@400MHz		6KV
RG17/U	52	2.8@400MHz	4.4	66 (polyethlene)	1
RG18U	52		2.8@400MHz 4.4	66	11KV
RG19U	52		1.8@400MHz 3.5	66	14KV
RG20U	52		1.8@400MHz 3.5	66	14KV
RG21U	53		29@400MHz 46	66	2.7KV
22B/U	95 (balanced cable twisted pair conductors inside one shield)	2.1	6.3@400MHz 12.5	66 (poly)	0.7
RG22/U	95 (balanced cable pair conductors inside one shield)	9.5@400MHz		66 (polyethlene)	1
RG23/U pair of coaxs with one shield over both	125	5.2@400MHz	0.8@30MHz	66 (polyethlene)	3
RG24/U pair of coaxs with one shield over both	125	5.2@400MHz	0.8@30MHz	66 (polyethlene)	3
RG25U	48	2.6@30MHz	16		8KV
RG26U	48				8KV
RG27U	48				15KV
RG28U	48				15KV
RG29U	53		11.7@400MHz 16	66	KV
RG33U	51				6KV
RG34/U	71	3.3@400MHz	6	66 (polyethlene)	5.2
RG35/U	71	2.3@400MHz	4.2	66 (polyethlene)	10
RG36U	69		2.1@400MHz		KV
RG37U	52				KV
RG38U	52				KV
RG39U	72				KV
RG40U	72.5				KV
RG41U	67.5				3KV
RG42U	78		34@400MHz 54	66	KV
RG54U	58		6.7@400MHz 11.5	66	3KV
RG55/U	53.5	10.7@400MHz 17		66 (polyethlene)	1.9
RG56U	48, twisted
RG57U	95 (balanced cable pair conductors inside one shield)	7.3@400MHz	13	66	3KV
RG58U	53	1.1@10MHz 3.8	8.4@400MHz 14.5	66 (Polyethylene)	1.9 kV
RG58U teflon	53	1.2@10MHz 3.0	8.7@400MHz 17.3	69.5 (FEP teflon)	1.4 kV
cheapernet thin Ethernet thinnet thinwire *	53	1.3@10MHz 2.9	8.9@400MHz 14.8	80 (foam poly)	0.3 kV
cheapernet thin Ethernet thinnet thinwire Plenum *	53	1.3@10MHz 2.9	9.2@400MHz 16	80 (Foam FPFA)	0.3 kV
RG58U	50	3.2	14@400MHz	78 (foam)	0.2 kV
RG59U	73	2.4, 3.5@100MHz	7@400MHz, 11.5	66 (poly)	2.3
RG59U FEP foam	75	0.65@5MHz, 2.6@100MHz 3.6@200MHz	5@400MHz, 8.5	82 (FEP foam)	0.3
RG60U	50				KV
RG62U	93	1.9	8.5	84 (air & poly)	0.7 kV
RG63/U	125	4.5@400MHz 6.3		86 (air & poly)	1
RG64U	48				KV
RG65/U	955	16@1MHz	16@400MHz	86 (air & poly)	1
RG71U	93	1.9	8.5	84 (air & poly)	0.7
RG72	150			84 (air & poly)	0.75
RG73	25		24@400MHz
RG74	52		3.5@400MHz 6	66	7
RG77/U	48				8
RG78/U	48				8
RG79/U	125	4.5@400MHz	6.3	86 (air & poly)	1
RG81/U	50		5.5@400MHz		3
RG82/U	50				2
RG83U	35	5.8@400MHz	9.6	66 (poly)	2 kV
RG84/U	75	2.8@400MHz		66 (polyethlene)	10
RG85/U	75	2.8@400MHz		66 (polyethlene)	10
RG86 twin lead	200				2
RG87U	50	0.7@1MHz	4.4@400MHz 7.6	69	5
RG88U	48	0.7@1MHz			10
RG89U	125		4.5@400MHz 6.3	84	1
RG90U	50		5.2@400MHz		3
RG93U	50		4@400MHz		10
RG94U	50		3.8@400MHz		7
RG100U	35		19@400MHz		2
RG108A/U Twinax	78 (balanced twisted pair conductors inside one shield)	2.3@10MHz 5.2	16@400MHz 26.2	66 (poly)	1.0
RG111U	95	1.9	8.5	66(poly)	1
RG114U	185	3.8@400MHz		84 (air & poly)	1
RG115U	50		5.6@400MHz		4
RG116U	50		4.4@400MHz 7.6	69.5	5
RG117U	50		2.0@400MHz 3.6	69.5	7
RG118U	50		2.0@400MHzBR>3.6	69.5	7
RG119U	50	3.8@400MHz		69 (solid teflon)	6
RG120U	50	3.8@400MHz		69 (solid teflon)	6
RG122U	50	4.5	29.2	66 (poly)	1.9
RG124U	73		8@400MHz		2.3KV
RG125U	150			84	2KV
RG126U	50	3.2@1MHz 47@400MHz	72	69.5	3KV
RG130/U	95 (balanced cable twisted pair conductors inside one shield)	8.8@400MHz		66 (polyethlene)	3
RG131/U	95 (balanced cable twisted pair conductors inside one shield)	8.8@400MHz		66 (polyethlene)	3
RG133/U	95	5.7@400MHz		66 (polyethlene)	4
RG140U	75	0.33@1MHz	6.9@400MHz 11.7	69.5	2.3
RG141U	50	2.1	13	69 (solid teflon)	1.9
RG142U	50	2.7	13	69 (solid teflon)	1.9
RG143U	50	5.3@400MHz	9	69.5	3KV
RG144U	75	4.0@400MHz	7	69 (solid teflon)	5
RG147U	52				14KV
RG148U	72				4KV
RG149U	52				5KV
RG150U	75				5KV
RG156U	50				10KV
RG157U	50				15KV
RG158U	25				15KV
RG159U	50		8.6@400MHz		2.3KV
RG160U	125				3KV
RG161U	70		18@400MHz
RG164U	75	2.8@400MHz		66 (poly)	10
RG165U	50	5@400MHz		69 (solid teflon)	5
RG166U	50	5@400MHz		69 (solid teflon)	5
RG174U	50	6.5 14.7@400MHz		66 (poly)	1.5
RG174U	50	6.6	31	66 (poly)	1.5
RG176U	49		11.5@5MHz
RG177U	50		2.8@400MHz
RG178U	50	10.5	45	69 (teflon)	1.0
RG179U	75	8.5	25	69 (teflon)	1.2
179DT	75	5	20.7	77 (Foam HDPE)	.
RG180U	95	4.6	16.5	69 (teflon)	1.5
RG181U	125				3.5KV
RG182U	125				2.3KV
RG183U	50
RG185U					2KV
RG186U					1KV
RG187U	75	8.5	25	69 (teflon)	1.2
RG188U	50	9.6	30	69 teflon)	1.2
RG189U	50				3.5KV
RG190U	50				15KV
RG191U	25				15KV
RG192U	12.5				15KV
RG193U	12.5				30KV
RG194U	12.5				30KV
RG195U	95				1.5KV
RG196U	50	10.5	45	69 (teflon)	1.2
RG197U	50
RG199U	70
RG200U	70
RG209U	50				3.2KV
RG210U	93		3.1	86 (air and poly)	0.7
RG210U	93		3.1		0.75
RG211U	50	2.3@400MHz		66 (poly)	7
RG212U	50	6.5@400MHz		66 (poly)	3
RG213U	50	5.5@400MHz		66 (poly)	5
RG213U	50	1.6	9	66 (poly)	5
RG214U	50	6.5@400MHz		66 (poly)	5
RG214U	50	1.6	9	66 (poly)	5
RG215U	50	5.5@400MHz		66 (poly)	5
RG216/U	75		9.0	66	5
RG216U	75	5.2@400MHz		66 (poly)	5
RG217U	50	0.41@10MHz	5.8		7
RG217U	50	4.3@400MHz		66 (poly)	7
RG218U	50	2.5@400MHz		66 (poly)	11
RG218U	50	1.5@30MHz	3.8	66	11 kV
RG219U	50	2.5@400MHz		66 (poly)	11
RG219U	50	1.5@30MHz	3.8	66	11
RG220U	50	1.1@30MHz	7@500MHz	66	11KV
RG221U	50				14KV
RG222U	50				2.7KV
RG223U	50	8.8@400MHz	13.4	66 (poly)	1.9
RG223U	50	3.1	16.5	66 (poly)	1.9
RG224U	50				7KV
RG225U	50	5@400MHz	7.5		5
RG226U	50				7KV
RG227U	50				5KV
RG228U	50				7KV
RG230U	25
RG231U	50
RG232U	50
RG233U	50
RG234U	50
RG235U	50				5KV
RG236U	50
RG237U	50
RG240U	50
RG242U	50
RG244U	75
RG245U	75
RG246U	75
RG247U	75
RG248U	75
RG249U	75
RG250U	75
RG251U	75
RG252U	75
RG253U	75
RG254U	75
RG255U	50
RG256U	50
RG257U	50
RG258U	50
RG259U	50
RG263U	50
RG264U	36.8
RG266U	1530				4KV
RG268U	50
RG269U	50
RG270U	50
RG279U	75
RG280U	50				3KV
RG281U	50				4KV
RG282U	54.6				4.5KV
RG283U	46				8KV
RG284U	75
RG285U	100
RG286U	75
RG287U	100
RG292U	75
RG293U	50
RG294U	95			Twin Axial
RG295U					0.895KV
RG296U	50				10KV
RG297U	50
RG298U	unshielded buoyant cable
RG301U	50				3
RG302U	75		13	69 (teflon)	2.3
RG303U	50	2.1	9@400MHz, 13	69 (teflon)	1.9
RG304U	50	6@400MHz		69 (teflon)	3
RG305U	75
RG306U	75
RG307U	75	7.5@400MHz		80	0.4
RG316U	50	9.4	30	69 (teflon)	1.2
RG318U	50
RG319U	50
RG321U	50
RG322U	50
RG323U	50
RG324U	50
RG325U	50
RG326U	50
RG327U	50
RG331U	50
RG332U	50
RG333U	50
RG334U	75
RG335U	75
RG336U	75
RG360U	50
RG366U	50
RG367U	50
RG369U	50
RG370U	50
RG371U	50
RG376U	50
RG377U	50
RG378U	50
RG382U	50
RG385U	50
RG391U	72		15@400MHz		5
RG392U	50		15@400MHz		5
RG393U	50	5@400MHz	7.5		5
RG400U	50	9.6@400MHz	13	69.5(teflon semi rigid)	1.9
RG401U	50	4.6@400MHz	7.5	69.5(teflon semi rigid)	3
RG402U	50	7.2@400MHz	13	(teflon semi rigid)	2.5
RG403U	50		29@400MHz	(teflon semi rigid)	2.5
RG405U	50	13@400MHz	22	(teflon semi rigid)	1.5
twin lead	300	--worse when wet! 1.1@100Mhz	3.1@500MHz 2.25@300MHz	82 (poly)
twin lead	75	--worse when wet! 1.1@100Mhz	3.1@500MHz 2.25@300MHz	71 (poly)
CAT 5e (per twisted pair)	100	2.0@10MHz 10@200MHz	3.65@31MHz 13@400MHz	68 (Polyolefin)	0.3KV, 360mA, 10W RF max
8218	75	4.2	20	66 (poly)	1.7
8241	75	2.4	12	66	1.7
8281	75	2.1@71.5MHz	9.2	66	2.9
8290	300 shielded twinlead	1.7@57MHz	7.7@887MHz	69.8
9207 Twinax	100 (balanced twisted pair conductors inside one shield)	1.2@10MHz 2.8	10.2@400MHz	66 (poly)	0.3
9913 RG8/U	50	0.5@10MHz 1.0	2.6@400MHz 4.4	84 (Semi-Solid poly)	0.6
9914 RG8/U	50	1.0 2.6@400MHz	4.4 9.9@4GHz	82 (foam poly)	0.6
Westflex 103	50	0.85 2.3@400MHz	4 10.6@5GHz	85 (Semi Air Spaced five cell extrusion)	5KV
FSJ1-50A HELIAX	50	1.26 2.56@200MHz	5.61@894MHz 9.37@2.3GHz	84 Foam PE	1.6KV 2.28KW @ 30MHz 237W @ 2.3GHz
LMR-240	50	1.7 3.7@220MHz	7.5 12.9@2.5GHz	84 Foam PE	1.5KV 1.49KW @ 30MHz 150W @ 2.5GHz
LMR-400	50	0.9 1.9@220MHz	4.3 6.8@2.5GHz	85 Foam PE	2.5KV 3.33KW @ 30MHz 330W @ 2.5GHz
18AWG zip lamp cord	~105	2.5@10MHz 4@15MHz	7.5@30MHz	70	1.4KV

The attenuation curves generally follow a straight line when drawn on log-log graph paper. Or approximately the square root of the ratio of the two frequencies. The slope is such that a coax with 2dB at 50Mhz will be 0.8 at 10Mhz. Most coaxes have about the same slope. What causes this attenuation is mostly the "skin effect" on the center conductor. The slope is less steep for foam, which means foam does better at VHF and UHF frequencies vs solid (little difference in HF), but foam can't take as much voltage as soild. So one need only look at the same freq when comparing attenuations when selecting which coax (foam vs foam, solid vs solid) you're gonna use from under the shack table (not strictly true, but close enough for "goverment" work!)

. Voltage ratings: note that foam dielectric cannot take as much voltage as solid dielectric.
* Ask the guys in your IT dept if they still have any of this stuff laying around, they may not have tossed it all yet... They might have some "Thin Net" also, it's just RG58.
73 de WA2ISE