Jun 26, 2026Knowledge

Waveguide Tube Information

Get technical parameters for standard rectangular waveguide tubes (BJ3 to BJ900). Features WR/R designations, frequency range, dimensions, and theoretical attenuation.

Rectangular Waveguide Tube Technical Data Sheet
Model No	EIA WG	IEC WG	Freq Range (GHz)	Inside Dim (mm)	Inside Tol ±	Wall Thick (mm)	Outside Dim (mm)	Outside Tol ±	Cut-Off Freq (GHz)	Cut-Off Wave (mm)	Atten. Al (dB/100ft)	Atten. Cu (dB/100ft)
BJ3	WR2300	R3	0.32-0.49	584.2 * 292.1	/	6.00	/	/	0.257	1169.2	0.270-0.400	/
BJ4	WR2100	R4	0.35-0.53	533.4 * 266.7	/	5.00	/	/	0.281	1067.5	0.310-0.460	/
BJ5	WR1800	R5	0.41-0.62	457.2 * 228.6	0.51	5.00	/	/	0.328	915.0	0.390-0.580	/
BJ6	WR1500	R6	0.49-0.75	381.0 * 190.5	0.38	3.18	/	/	0.393	762.5	0.510-0.760	/
BJ8	WR1150	R8	0.64-0.98	292.1 * 146.05	0.38	3.18	/	/	0.513	584.6	0.760-0.113	/
BJ9	WR975	R9	0.75-1.15	247.65 * 123.82	0.30	3.18	/	/	0.605	495.3	0.950-1.420	/
BJ12	WR770	R12	0.96-1.46	195.58 * 97.79	0.25	3.18	/	/	0.766	391.2	1.340-1.970	/
BJ14	WR650	R14	1.13-1.73	165.1 * 82.55	0.20	3.18	/	/	0.908	330.2	1.720-2.520	/
BJ18	WR510	R18	1.45-2.20	129.54 * 64.77	0.20	2.03	/	/	1.157	259.1	2.620-3.800	/
BJ22	WR430	R22	1.72-2.61	109.22 * 54.61	0.20	2.03	/	/	1.373	218.4	3.410-4.930	/
BJ26	WR340	R26	2.20-3.30	86.36 * 43.18	0.15	2.03	/	/	1.737	172.7	4.860-6.900	/
BJ32	WR284	R32	2.60-3.95	72.14 * 34.04	0.13	2.03	76.2 * 38.1	0.15	2.078	144.3	6.240-8.910	4.820-6.880
BJ40	WR229	R40	3.22-4.90	58.17 * 29.08	0.13	1.63	61.42 * 32.34	0.15	2.577	116.3	8.700-12.4	6.710-9.560
BJ48	WR187	R48	3.95-5.85	47.55 * 22.15	0.10	1.63	50.8 * 25.4	0.13	3.153	95.1	11.9-16.7	9.130-12.80
BJ58	WR159	R58	4.64-7.05	40.39 * 20.19	0.10	1.63	43.64 * 23.44	0.13	3.712	80.8	15.3-21.9	11.70-16.80
BJ70	WR137	R70	5.38-8.17	34.85 * 15.8	0.08	1.63	38.1 * 19.05	0.10	4.301	69.7	19.4-27.4	14.90-21.00
BJ84	WR112	R84	6.57-9.99	28.5 * 12.6	0.07	1.27	31.04 * 15.14	0.10	5.26	57.0	28.1-39.6	21.50-30.30
BJ100	WR90	R100	8.20-12.40	22.86 * 10.16	0.05	1.27	25.4 * 12.7	0.08	6.557	45.72	40.2-56.3	30.70-43.00
BJ120	WR75	R120	9.84-15.0	19.05 * 9.525	0.04	1.27	21.59 * 12.06	0.08	7.869	38.1	53.8-76.0	41.10-58.10
BJ140	WR62	R140	11.9-18.0	15.799 * 7.899	0.04	1.02	17.84 * 9.94	0.06	9.49	31.6	74.8-103.5	57.10-79.00
BJ180	WR51	R180	14.5-22.0	12.954 * 6.477	0.04	1.02	15.0 * 8.52	0.06	11.574	25.91	99.4-138.5	75.90-105.5
BJ220	WR42	R220	17.6-26.7	10.668 * 4.318	0.03	1.02	12.71 * 6.36	0.05	14.053	21.34	144.1-201.2	110.1-153.2
BJ260	WR34	R260	21.7-33.0	8.636 * 4.318	0.03	1.02	10.67 * 6.36	0.05	17.357	17.27	196.2-273.4	149.3-208.5
BJ320	WR28	R320	26.4-40.1	7.112 * 3.556	0.02	1.02	9.15 * 5.59	0.04	21.077	14.22	262.1-365.1	199.3-278.4
BJ400	WR22	R400	32.9-50.1	5.69 * 2.845	0.02	1.02	7.73 * 4.89	0.04	26.34	11.38	364.5-508.3	277.2-386.4
BJ500	WR19	R500	39.2-59.6	4.775 * 2.388	0.02	1.02	6.82 * 4.43	0.04	31.39	9.55	471.2-656.3	358.3-499.5
BJ620	WR15	R620	49.8-75.8	3.759 * 1.88	0.015	0.76	5.28 * 3.4	0.03	39.87	7.52	742.3-1025.4	565.4-781.0
BJ740	WR12	R740	60.5-91.9	3.099 * 1.549	0.015	0.76	4.62 * 3.07	0.03	48.37	6.2	995.4-1380.1	757.2-1050.2
BJ900	WR10	R900	73.8-112.0	2.54 * 1.27	0.015	0.76	4.06 * 2.79	0.03	59.01	5.08	1335.2-1860.5	1015.4-1415.5

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Waveguide Tube Information

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