microwave noise tubes & noise sources 571 description www.cpclare.com td/tn series specification ranges applications features cp clares td series of gas discharge microwave noise tubes and tn series of gas discharge microwave noise sources are the element in a microwave rf system that allows accurate measurements of the noise figure of the receiver or its components. the requirements of a device used for making such noise figure measurements include broad bandwidth inherent in the active element, stability, ease of operation, and long life. in general, the range of usefulness of these noise sources permits measurements of noise figures from about 2 to 30db. the ps-237 through ps-240 current-regulated power supplies can be used to operate many of the noise sources described herein. n excess noise ratios (enr): up to 20db n broad bandwidth n excellent long term stability n life up to 20,000 hours n ac, dc, or pulsed operation n noise figure measurement parameter range units frequency 0.2 - 220.0 ghz enr 8.8 - 20.1 db operating current 30 - 250 ma starting voltage 0.9 - 7.0 kv (see detailed specifications for more data. contact cp clare for td and tn part numbers or for other requirements not listed.)
microwave noise tubes & noise sources 572 north america: 1-800-cpclare europe: 32-11-300868 asia: 886-2-2523-6368 japan: 81-3-3980-2212 td/tn series all characteristics at 25?c. frequency band wave- part # / package mount recommended minimum dc anode tube drop tube-in range guide eia type outline type mode of starting starting (vdc) mount (ghz) number operation (1) voltage spike current enr (kv) (ma) (db) 1.12-1.70 l wr-650 td-21/6881 1 90 h dc 4.0 250 65 15.20 (2) td-29/7101 1a 90 h ac,dc 4.5 250 130 18.00 (2) (1.20-1.40 only) td-33/7147 1a 90 h ac,dc 4.0 250 75 15.20 (2) td-49 1 90 h pulse 4.0 200 125 15.20 (2) td-62/7992 1 90 h dc 4.5 250 ~145 18.00 (2) td-75 1 90 h pulse 4.5 200 235 18.00 (2) td-91 special 10 e dc 7.0 250 230 15.20 (2) 2.60-3.95 s wr-284 td-12/6358 2 10 e dc 2.7 250 80 15.20 td-22/6782 special 90 h ac,dc 2.0 250 45 8.85 td-31 2a 10 e ac,dc 2.7 250 90 15.20 td-32 2a 10 e ac,dc 2.7 250 170 17.80 td-34/7148 2 10 e dc 2.7 250 160 17.75 td-38/8151 2 10 e pulse 3.3 200 145 15.27 td-56/8286 2 10 e pulse 3.5 200 265 17.90 td-82 special 90 e dc 0.9 75 55 18 3.30-4.90 s wr-229 td-24 special 10 e ac,dc 2.5 250 60 15.30 td-30 special 10 e ac,dc 2.5 250 110 1 3.95-5.85 c(g) wr-187 td-10/6356 3 10 e dc 3.1 250 70 15.32 td-39/7999 3 10 e pulse 3.5 175 140 15.50 td-43/8287 3 10 e pulse 3.5 175 210 17.85 td-48/7989 3 10 e dc 2.7 250 135 17.70 td-83 special 90 e dc 0.9 100 55 18.90 5.85-8.20 x(j) wr-137 td-10/6356 3 10 e dc 3.1 250 75 15.65 td-39/7999 3 10 e pulse 3.5 175 140 15.50 td-43/8287 3 10 e pulse 3.5 175 210 17.90 td-48/7989 3 10 e dc 2.7 250 135 17.75 td-67/8288 3 15 e pulse 3.5 150 225 18.00 8.20-12.40 x wr-90 td-11/6357 4 10 e dc 2.7 200 75 15.60 td-23/6882 4 10 e dc 2.7 200 115 18.00 td-40/8152 4 10 e pulse 3.3 175 125 15.60 td-44/7988 4 10 e pulse 3.5 175 205 18.00 td-58/8293 4 10 e pulse 3.5 175 208 17.75 td-72/8059 4 10 e pulse 3.3 175 133 15.56 td-73 special 90 e dc 0.9 100 54 14.50 td-93b special 90 e pulse 0.9 100 165 14.50 td-114 special 10 e dc 1.5 200 90 15.30 12.40-18.00 ku wr-62 td-18/6684 5 10 e dc 2.7 200 70 15.80 td-41/8030 5 10 e pulse 3.3 175 130 15.85 td-46 special 20 e ac,dc ~1.2 100 35 15.20 (2) td-54/7991 5 10 e dc 2.7 200 130 18.00 td-55/8290 5 10 e pulse 3.5 175 230 17.85 td-92 5 10 e pulse 3.5 175 125 15.65 18.00-26.50 k wr-42 td-13/6359 6 10 e pulse 2.7 200 68 15.90 td-42/8031 6 10 e dc 3.3 175 125 16.00 td-50/7990 6 10 e pulse 2.7 200 157 18.05 td-51/8291 6 10 e dc 3.5 175 260 17.90 td-81 special 10 e dc 3.3 150 148 16.15 26.50-40.00 ka wr-28 td-76/7993 special 10 e dc 2.7 125 130 16.0 td-77/8292 special 10 e pulse 3.0 100 175 16.0 (1) dc operation cathode at one end only. ac,dc operation cathodes at both ends. pulse operation cathode at one end specially designed for pulse operation. if the anode current during the on time of a sq uare wavepulse (>100 m s duration) is nominally the same as the rated dc anode current, the tube drop during this period will be approximately the same as the rated dc tube drop. (2) excess noise ratio of tube only. td series gas discharge noise source tubes with filamentary or hollow cathodes
microwave noise tubes & noise sources 573 www.cpclare.com td/tn series outline drawings (noise source tubes with filamentary or hollow cathodes) td series gas discharge noise source tubes with indirectly-heated cathodes all characteristics at 25?c. frequency band part number/ minimum dc anode tube tube-in- used in range eia type starting current drop mount mount (ghz) number voltage (ma) (vdc) enr spike (kv) (db) 3.4-3.6 s td-124 0.60 75 40 18.30 tn-65 2.9-3.1 td-129 0.45 75 35 18.50 tn-71 2.7-2.9 td-121 0.45 75 35 18.50 tn-72 8.2-12.4 x td-126 1.50 100 90 15.6 tn-130 f a eb c 0.74 0.08 (0.292 0.032) 0.24 typ. (0.097) d d a eb alt. - a c 0.74 0.08 (0.292 0.032) 0.24 typ. (0.097) dimension (inches) outline number a b c d e f 1/1a (3) various 0.500 max 14.625-15.000 1.350-1.435 1.475-1.550 0.188 max 2/2a (3) 16.937-17.437 0.310-0.360 17.625-18.000 0.990 max 0.975-1.050 0.305-0.325 3/3a (3) 13.875-14.375 0.270-0.320 14.375-15.000 0.555 max 0.547-0.579 0.245-0.265 a d 1.27 max. (0.500) 0.48 max. dia. (0.188) c 0.74 0.08 (0.292 0.032) 6.98 max. (2.750) 0.24 typ. (0.097) 1.41 dia. max. (0.555) e dimension (inches) outline number a b c d e f 4 8.625 min 1.500 max 11.937-12.250 0.370-0.380 0.550 max 0.3804 5 7.375 min 1.250 max 10.875-11.250 0.235-0.265 0.500 max 0.2654 6 6.187 min 1.250 max 9.687-10.000 0.160-0.194 0.500 max 0.1944 (3) the a suffix indicates using the bi-pin termination depicted in the inset labelled alt.-a. (4) the diameter of the tube shall not exceed this value over the length of the tube denoted in the figure by b.
microwave noise tubes & noise sources 574 north america: 1-800-cpclare europe: 32-11-300868 asia: 886-2-2523-6368 japan: 81-3-3980-2212 td/tn series td series gas discharge noise source tubes with indirectly-heated cathodes (5) all characteristics at 25?c. band part frequency enr tube dc anode minimum circuit mounting circuit number range (db) drop current starting length (ghz) (vdc) (ma) voltage (inches) spike (kv) vhf tn-46 0.2-0.25 18.5 200 30 1.5 15.50 helical coupling 7/8" coax uhf tn-47 0.56-0.64 20.3 325 50 2.0 16.5 direct coupling 7/8" coax tn-48 0.34-0.51 18.5 75 2.0 10.0 helical coupling type n l tn-51 1.0-2.0 20.1 200 50 1.9 8.94 direct coupling 7/8" coax tn-52 1.0-2.0 20.1 200 50 1.9 10.38 direct coupling 7/8" coax tn-54 1.0-2.0 20.5 200 50 1.9 17.31 direct coupling type n tn-55 1.25-1.55 20.1 200 50 1.9 9.56 direct coupling 7/8" coax tn-57 1.28-1.35 20.5 225 50 1.9 12.56 direct coupling 7/8" coax s tn-60 2.0-4.0 18.5 200 50 1.9 10.38 direct coupling 7/8" coax tn-64 2.7-2.9 18.5 35 60 0.45 3.75 90 e rg-75/u tn-65 3.4-3.6 18.3 40 75 0.6 2.50 90 e rg-75/u tn-71 2.9-3.1 18.5 35 75 0.45 3.63 90 e rg-75/u tn-72 2.7-2.9 18.5 35 75 0.45 3.09 90 e rg-75/u tn-73 2.7-2.9 18.5 35 75 0.45 3.09 90 e rg-75/u tn-74 2.7-2.9 18.5 35 60 0.45 3.75 90 e rg-75/u tn-75 3.1-3.5 18.3 40 75 0.6 2.63 90 e rg-75/u c tn-76 5.3-6.0 18.5 60 150 0.7 2.00 90 e rg-49/u tn-77 5.3-6.0 13.5 60 150 0.7 3.50 90 e rg-49/u tn-78 5.45-5.82 18.5 60 150 0.7 2.75 90 e rg-95/u tn-82 5.3-6.0 13.5 60 150 0.7 3.56 90 e rg-49/u h tn-83 7.5-8.6 18.5 60 75 0.8 1.56 90 e rg-51/u tn-84 7.5-8.6 15.0 55 100 0.8 2.50 90 e rg-51/u x tn-94 8.9-9.1 18.5 50 60 0.95 1.63 90 e rg-67/u tn-95 8.5-9.6 14.5 50 100 0.95 2.50 90 e rg-67/u tn-97 8.5-9.6 18.5 50 75 0.95 1.63 90 e rg-67/u tn-101 8.5-9.6 14.5 50 100 0.95 2.25 90 e rg-52/u tn-124 8.2-12.4 12.5 50 50 1.00 2.50 90 e rg-52/u ku(k) tn-102 15.0-16.5 18.5 60 40 1.2 1.50 90 e rg-67/u tn-103 12.4-18.0 18.5 140 50 2.0 7.50 0 e rg-107/u tn-104 15.0-16.6 12.3 95 50 1.0 1.63 90 e rg-91/u tn-128 12.0-14.0 13.5 50 50 1.0 2.00 90 e rg-91/u k(p) tn-106 18.0-26.5 18.5 175 50 1.9 6.44 0 e rg-66/u tn-125 22.0-23.0 12.5 65 50 1.5 2.25 90 e rg-53/u ka(q) tn-107 26.5-40.0 18.0 140 40 2.5 5.13 0 e rg-96/u tn-109 34.0-36.0 18.0 140 35 2.5 7.38 0 e rg-96/u tn-126 31.0-32.0 13.3 75 50 1.5 2.25 90 e rg-96/u r tn-111 50.0-75.0 18.0 230 30 2.5 4.63 0 e rg-98/u (5) cp clare can usually refurbish noise sources (depending on condition of waveguide) and install replacement tubes.
microwave noise tubes & noise sources 575 www.cpclare.com td/tn series ordering information td series gas discharge noise source tubes with filamentary cathode noise tubes (5) noise source power supplies with current regulation all characteristics at 25?c wave-guide part frequency approx. tube dc anode minimum replacement mounting flange number range enr drop current starting tube mate (ghz) (db) (vdc) (ma) voltage spike (kv) wr-42 tn-170 18.0-26.5 15.0 170 120 2.0 td-170 7 e ug-595/u wr-28 tn-162 26.5-40.0 15.4 170 120 2.0 td-162 7 e ug-599/u wr-22 tn-172 33.0-50.0 15.4 170 120 2.0 td-172 7 e ug-599/u wr-19 tn-163 40.0-60.0 15.4 170 120 2.0 td-163 7 e ug-385/u wr-15 tn-164 50.0-75.0 15.0 170 120 2.0 td-164 7 e ug-385/u wr-12 tn-171 60.0-90.0 15.0 210 100 2.5 td-171 7 e ug-385/u wr-10 tn-165 75.0-110.0 14.2 225 75 3.0 td-165 7 e ug-385/u wr-8 tn-167 90.0-140.0 13.0 225 75 3.0 td-167 7 e ug-385/u wr-6 tn-166a 110.0-170.0 13.0 225 50 3.0 td-166a 7 e ug-385/u wr-5 tn-173 140.0-220.0 9.0 225 50 3.0 td-173 7 e ug-385/u (5) cp clare can usually refurbish noise sources (depending on condition of waveguide) and install replacement tubes. a complete part number is represented by the information in the part number column of the specification table. part number for noise tubes (6) ac input dc starting dc operating voltage (kv) current (ma) ps-237 tn-162 thru tn-172 115vac, 60hz 5.0 150 ps-238 except tn-166a 220vac, 50hz 5.0 150 ps-239 tn-173, tn-166a 115vac, 60hz 5.0 120 ps-240 220vac, 50hz 5.0 75 (6) these power supplies, though designed for the tn-162 through tn-173, are capable of operating many other noise sources made by cp clare.
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