Waveguide Frequency Designation Internal Range (Ghz) DimensionsBritish IEC EIA (mm) Flange Designation DescriptionWG R WR 1.14 - 1.73 6 14 650 165.100 x 82.550 UG-417B/U Type (but without groove) Rectangular, Ten hole fixing + 2 dowel holes1.72 - 2.61 8 22 430 109.220 x 54.610 UG-435B/U Type (but without groove) Rectangular, Ten hole fixing + 2 dowel holes2.60 - 3.95 10 32 284 72.140 x 34.040 5985-99-083-1560 also drilled for the 5985-99-083-0010 Circular, Six/Eight hole fixing3.30 - 4.90 11A 40 229 58.170 x 29.083 UDR 40 Rectangular, Ten hole fixing 3.94 - 5.99 12 48 187 47.550 x 22.149 UAR 48 Circular, Eight hole fixing4.64 - 7.05 13 58 159 40.390 x 20.193 UAR 58 Circular, Six hole fixing5.38 - 8.18 14 70 137 34.850 x 15.799 UAR 70 Circular, Six hole fixing6.58 - 10.0 15 84 112 28.449 x 12.624 UBR 84 Square, Four hole fixing8.20 - 12.5 16 100 90 22.860 x 10.160 UBR 100 Square, Four hole fixing9.84 - 15.0 17 120 75 19.050 x 9.525 UBR 120 Square, Four hole fixing11.9 - 18.0 18 140 62 15.799 x 7.899 UBR 140 Square, Four hole fixing14.5 - 22.0 19 180 51 12.954 x 6.477 UBR 180 Square, Four hole fixing17.6 - 26.7 20 220 42 10.668 x 4.318 UBR 220 Type Square, Four hole fixing21.7 - 33.0 21 260 34 8.636 x 4.318 UBR 260 Type Square, Four hole fixing26.4 - 40.1 22 320 28 7.112 x 3.556 UG-599/U Square, Four hole fixing33.0 - 50.1 23 400 22 5.690 x 2.845 *UG-383/U Circular, Four hole fixing/doweled39.3 - 59.7 24 500 19 4.775 x 2.388 *UG-383/U (Modified) Circular, Four hole fixing/doweled49.9 - 75.8 25 620 15 3.759 x 1.880 *UG-385/U Circular, Four hole fixing/doweled60.5 - 92.0 26 740 12 3.099 x 1.549 *UG-387/U Circular, Four hole fixing/doweled73.8 - 112 27 900 10 2.540 x 1.270 *UG-387/U (Modified) Circular, Four hole fixing/doweled92.3 - 140.0 28 1200 8 2.032 x 1.016 *UG-387/U (Modified) Circular, Four hole fixing/doweled114.0 - 173.0 29 1400 6 1.651 x 0.826 *UG-387/U (Modified) Circular, Four hole fixing/doweled145.0 - 220.0 30 1800 5 1.295 x 0.648 *UG-387/U (Modified) Circular, Four hole fixing/doweled 172.0 - 261.0 31 2200 4 1.092 x 0.546 *UG-387/U (Modified) Circular, Four hole fixing/doweled217.0 - 330.0 32 2600 3 0.864 x 0.432 *UG-387/U (Modified) Circular, Four hole fixing/doweled Waveguide and Flange DataNote: Products tted with flange types marked thus * are supplied with two xing screws per flange and provided with alignment dowels in accordance with Mil-F-3922/67B.Flann Standard flange detailsPlease see page 110-115 for outline dimensions108www.flann.comStandard product finishesPlate: Tin nickel for the larger, low frequency products; gold plate for smaller and millimetric products.Paint: two part epoxy paint in mid brunswick green. Most waveguide flange types areavailable from WG6 (WR650) to WG32 (WR3) Special waveguide flanges can be supplied to orderWaveguide Flanges, General InformationFlann is able to provide free t waveguide flanges for WG6 (WR650) to WG32 (WR3) for customers own manufacturing assemblies.Flange xing hardware (nuts, bolts, gaskets, shims, etc) is also available. We are also able to supply special flanges to customers requirements.Standard FlangesAll waveguide products in this catalogue are tted with Flann “Standard Flanges” as listed on page 108, except where stated.Note: Choke flanges are not recommended for broadband waveguide equipment.Details of the “Standard Flanges” as tted to Flann products are shown on Pages 110 to 115.Flanges and flange hardware - quotations for standard and special flanges are available on request. Flange xing bolts, nuts, dowels and O ring seals are also available - details on request.Anti-Cocking Flanges for Millimetric Waveguide Bands Greatly improved performance and repeatability Fully compatible with standard “Mil spec” flangesThe Millimetric flanges in the Series UG-381/U to UG-387/U are notorious for “cocking” during connection which results in leakage, increased insertion loss, discontinuity and poor repeatability. Flann produces a range of millimetric “Anti-cocking” flanges which provide greatly improved performance and repeatability whilst maintaining full compatibility with standard Mil spec flanges. “Anti-cocking” flanges are optionally available on most millimetric products in the Flann product range. Refer to page 119 for details. Customers requiring millimetric products tted with anti-cocking flanges must request such flanges at the time of the initial enquiry. Purchase orders must specify anti-cocking flanges, if required, as such flanges can not be retro-tted to products.NOTE: Anti-cocking flanges must be specied at time of order.Precision FlangesPrecision flanges are tted as standard to all Flann calibration kit components and individual Metrology Grade Components. Flann precision flanges are fully compatible with “standard” flange types. Precision flanges in the millimetric waveguide sizes also incorporate the “anti-cocking” feature. See from page 116 for details.Waveguide Mate