User contributions
Jump to navigation
Jump to search
- 12:36, 22 June 2019 diff hist +480 TD-204
- 12:33, 22 June 2019 diff hist +434 TD-203 current
- 12:33, 22 June 2019 diff hist 0 N File:TD-203.jpg current
- 12:21, 22 June 2019 diff hist +501 N TD-203 Created page with ";{{pdf|TM 11-5805-367-12.PDF|TM 11-5805-367-12}} :OPERATOR'S AND ORGANIZATIONAL MAINTENANCE MANUAL MULTIPLEXERS TD-202/U (NSN 5805-00-884-2176), ::TD-203/U (NSN 5805-00-884-2..."
- 12:19, 22 June 2019 diff hist +525 TD-202
- 12:17, 22 June 2019 diff hist 0 TD - Timing Device
- 12:17, 22 June 2019 diff hist +65 N TD - Timing Device Created page with "TD-202 TD-203 TE-204 Category: Equipment Group"
- 12:15, 22 June 2019 diff hist +16 TD-202
- 12:14, 22 June 2019 diff hist +47 TD-202
- 12:11, 22 June 2019 diff hist +404 TD-202
- 12:10, 22 June 2019 diff hist 0 N File:TD-202.U.02.jpg current
- 12:02, 22 June 2019 diff hist +24 CV-1548 →See Also
- 12:00, 22 June 2019 diff hist -2 5805 →367 CV-1548/U
- 11:59, 22 June 2019 diff hist +942 5805
- 11:56, 22 June 2019 diff hist +43 CV-1548 →Reference Files
- 11:55, 22 June 2019 diff hist -24 CV-1548 →Reference Files
- 11:54, 22 June 2019 diff hist +528 CV-1548 →Reference Files
- 11:48, 22 June 2019 diff hist +613 CV-1548
- 11:48, 22 June 2019 diff hist 0 N File:CV-1548.U.jpg current
- 11:36, 22 June 2019 diff hist +1 TA-182 →See Also
- 11:36, 22 June 2019 diff hist +392 TA-182
- 11:29, 22 June 2019 diff hist +21 TA-182
- 11:28, 22 June 2019 diff hist 0 N File:TA-182.jpg current
- 11:25, 22 June 2019 diff hist +31 F - Filter Unit
- 11:24, 22 June 2019 diff hist +21 N F - Filter Unit Created page with "F-98/U F-318"
- 17:21, 21 June 2019 diff hist +140 N F-98 Created page with "File:F-98.U.jpg The use of the F-98/U Filter Assembly permitted simultaneous telephone and typewriter operation over a carrier channel." current
- 17:21, 21 June 2019 diff hist 0 N File:F-98.U.jpg current
- 17:04, 21 June 2019 diff hist +5 AN~TCC-14 →See Also current
- 17:00, 21 June 2019 diff hist -1 AN~TCC-14 →See Also
- 17:00, 21 June 2019 diff hist +337 AN~TCC-14
- 16:52, 21 June 2019 diff hist +30 AN~TCC-14
- 16:51, 21 June 2019 diff hist +1 TH-5 →Reference Files= current
- 16:50, 21 June 2019 diff hist +29 AN~TCC-14
- 16:49, 21 June 2019 diff hist +504 AN~TCC-14
- 16:05, 21 June 2019 diff hist +76 AN~TGC-30 →Reference File current
- 20:15, 20 June 2019 diff hist +255 TH-22 →Reference File current
- 20:14, 20 June 2019 diff hist +139 AN~TCC-29 current
- 20:09, 20 June 2019 diff hist +38 AN~TCC-29
- 20:02, 20 June 2019 diff hist +365 AN~TCC-29
- 19:08, 20 June 2019 diff hist +22 N AN~TCC-14 Created page with "File:AN.TCC-14.jpg"
- 19:08, 20 June 2019 diff hist 0 N File:AN.TCC-14.jpg current
- 19:06, 20 June 2019 diff hist +264 TH-22 →Reference File
- 19:03, 20 June 2019 diff hist +15 TH-22 →See Also
- 19:03, 20 June 2019 diff hist +246 TH-22 →Reference File
- 19:01, 20 June 2019 diff hist +244 N F-316 Created page with ";{{pdf|TM_11-5805-356-34-1.pdf|TM 11-5805-356-34-1}} :DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS :TERMINAL, TELEGRAPH..."
- 19:00, 20 June 2019 diff hist +13 AN~TCC-29 →See Also
- 18:59, 20 June 2019 diff hist +14 AN~TCC-29 →See Also
- 18:59, 20 June 2019 diff hist +14 AN~TCC-29 →See Also
- 18:55, 20 June 2019 diff hist +24 AN~TCC-29
- 18:54, 20 June 2019 diff hist 0 N File:AN.TCC-29.jpg current
- 18:49, 20 June 2019 diff hist +1 AN~TCC-29 →See Also
- 18:48, 20 June 2019 diff hist +71 AN~TCC-29
- 18:44, 20 June 2019 diff hist +1 TH-22
- 18:44, 20 June 2019 diff hist +5 TH-22 →See Also
- 18:43, 20 June 2019 diff hist +40 TH-22 →See Also
- 18:42, 20 June 2019 diff hist +321 TH-22
- 17:26, 20 June 2019 diff hist +21 N TH-22 Created page with "File:TH-22.TG.jpg"
- 17:26, 20 June 2019 diff hist 0 N File:TH-22.TG.jpg current
- 17:00, 20 June 2019 diff hist +1 CV - Converters current
- 16:59, 20 June 2019 diff hist +24 CV - Converters
- 16:58, 20 June 2019 diff hist +15 CV-425 →See Also current
- 16:57, 20 June 2019 diff hist 0 CV - Converters
- 16:52, 20 June 2019 diff hist +32 CV-425
- 16:52, 20 June 2019 diff hist 0 N File:CV-425.U.jpg current
- 16:50, 20 June 2019 diff hist +322 N CV-425 Created page with "The CV-425/U converted 20 Hz ringing signals to a higher audio frequency for transmissions over circuits that will not pass 20 Hz. It also converted higher audio frequencies b..."
- 16:41, 20 June 2019 diff hist +23 SB-22~PT current
- 16:41, 20 June 2019 diff hist 0 N File:SB-22.PT.jpg current
- 14:25, 20 June 2019 diff hist +6 AN~TSC-58
- 14:25, 20 June 2019 diff hist +22 N AN~TSC-58 Created page with "File:AN.TSC-58.jpg"
- 14:24, 20 June 2019 diff hist 0 N File:AN.TSC-58.jpg current
- 14:20, 20 June 2019 diff hist +52 AN~TGC-30
- 14:15, 20 June 2019 diff hist +142 AN~TGC-30
- 14:12, 20 June 2019 diff hist 0 N File:AN.TGC-30.4.jpg current
- 14:00, 20 June 2019 diff hist +26 AN~TGC-30
- 13:59, 20 June 2019 diff hist 0 N File:AN.TGC-30.3.jpg current
- 13:59, 20 June 2019 diff hist +50 AN~TGC-30 →Major Components
- 13:43, 20 June 2019 diff hist +52 AN~TGC-30
- 13:43, 20 June 2019 diff hist 0 N File:AN.TGC-30.2.jpg current
- 13:30, 20 June 2019 diff hist 0 N File:AN.TGC-30.1.jpg current
- 13:26, 20 June 2019 diff hist +44 N TGC - Transportable Telegraph or Teletype Communications Created page with "AN~TGC-30 Category: Equipment Group" current
- 13:25, 20 June 2019 diff hist +197 S-391 current
- 13:20, 20 June 2019 diff hist +64 S-391
- 13:20, 20 June 2019 diff hist 0 N File:S-391.TGC-30.3jpg.jpg current
- 13:19, 20 June 2019 diff hist 0 N File:S-391.TGC-30.2jpg.jpg current
- 13:08, 20 June 2019 diff hist +25 N S-391 Created page with "File:S-391.TGC-30.jpg"
- 13:08, 20 June 2019 diff hist 0 N File:S-391.TGC-30.jpg current
- 12:55, 20 June 2019 diff hist +686 N AN~TGC-30 Created page with "The AN/TGC-30 Teletypewriter Central Office terminated one duplex or two half-duplex, secure teletypewriter circuits. It also provided for switching 15-voice frequency teletyp..."
- 18:07, 19 June 2019 diff hist +9 S-348 current
- 18:05, 19 June 2019 diff hist +20 S-348 →Reference Files
- 18:04, 19 June 2019 diff hist 0 N File:033016 574-24P.pdf current
- 13:26, 19 June 2019 diff hist 0 S-170
- 13:25, 19 June 2019 diff hist +6 S-170
- 12:45, 19 June 2019 diff hist +19 OA
- 12:44, 19 June 2019 diff hist +154 OA-8991 current
- 12:27, 19 June 2019 diff hist +12 OA-8991
- 12:26, 19 June 2019 diff hist +63 OA-8991
- 12:23, 19 June 2019 diff hist 0 N File:OA-8991.MSM.jpg current
- 12:19, 19 June 2019 diff hist +38 M-991 current
- 12:18, 19 June 2019 diff hist +16 M-991
- 11:57, 19 June 2019 diff hist +11 M-995 →See Also current
- 11:56, 19 June 2019 diff hist +16 M-995 →Reference Files
- 11:56, 19 June 2019 diff hist +133 2330
- 11:54, 19 June 2019 diff hist +24 M-995 →Reference Files
- 11:52, 19 June 2019 diff hist +143 N M-995 Created page with "==Reference Files== ==Reference Files== * {{pdf|051121 -14P.pdf|TM 9-2330-363-14&P 1982}} * {{pdf|051191 HR.pdf|TM 9-2330-363-14&P-HR 1982}}"
- 11:51, 19 June 2019 diff hist +122 N M-991 Created page with "==Reference Files== * {{pdf|051121 -14P.pdf|TM 9-2330-363-14&P 1982}} * {{pdf|051191 HR.pdf|TM 9-2330-363-14&P-HR 1982}}"
- 11:49, 19 June 2019 diff hist 0 N File:051191 HR.pdf current
- 11:46, 19 June 2019 diff hist 0 N File:051121 -14P.pdf current
- 11:41, 19 June 2019 diff hist -5 OA-8991 →Reference File
- 11:41, 19 June 2019 diff hist +20 OA-8991 →Reference File
- 11:40, 19 June 2019 diff hist +79 OA-8991
- 11:36, 19 June 2019 diff hist 0 N File:053205 -24F.pdf current
- 11:18, 19 June 2019 diff hist +13 AN~TSM-191 →See Also current
- 09:22, 19 June 2019 diff hist 0 ASM - Piloted Aircraft Special Maintenance
- 09:20, 19 June 2019 diff hist +31 ASM - Piloted Aircraft Special Maintenance
- 09:20, 19 June 2019 diff hist +34 N ASM - Piloted Aircraft Special Maintenance Created page with "ASM-146 ASM-147 ASM-189 ASM-190"
- 09:08, 19 June 2019 diff hist +45 OA-8991 →See Also
- 09:07, 19 June 2019 diff hist +8 OA-8991 →Reference File
- 09:07, 19 June 2019 diff hist +528 OA-8991
- 06:10, 19 June 2019 diff hist +57 N OA-8991 Created page with "Electronic Repair Shelter (ERS) of the AN~TSM-191(V)."
- 06:09, 19 June 2019 diff hist 0 OA
- 06:09, 19 June 2019 diff hist +60 OA
- 20:08, 18 June 2019 diff hist +157 AN~TSM-191 →Reference Files
- 20:05, 18 June 2019 diff hist +29 AN~TSM-191 →V6
- 20:05, 18 June 2019 diff hist 0 N File:AN.TSM-191(V)6.jpg current
- 20:04, 18 June 2019 diff hist +29 AN~TSM-191 →V5
- 20:02, 18 June 2019 diff hist 0 File:AN.TSM-191(V)5.jpg Cdewit uploaded a new version of "File:AN.TSM-191(V)5.jpg" current
- 20:02, 18 June 2019 diff hist 0 N File:AN.TSM-191(V)5.jpg
- 20:01, 18 June 2019 diff hist +45 AN~TSM-191 →See Also
- 20:00, 18 June 2019 diff hist +77 N TSM - Transportable Special Maintenance Created page with "AN~TSM-182 AN~TSM-183 AN~TSM-191 Category: Equipment Group" current
- 19:57, 18 June 2019 diff hist +52 AN~TSM-191 →Reference Files
- 19:55, 18 June 2019 diff hist +365 AN~TSM-191 →V6
- 19:47, 18 June 2019 diff hist +41 AN~TSM-191
- 19:45, 18 June 2019 diff hist +735 N AN~TSM-191 Created page with "'''V5''' The Electro-Optics Test Facility (EOTF) (AN/TSM-191('''V)5''') is capable of testing the full range of Army electro-optical systems including laser transmitters, rece..."
- 19:37, 18 June 2019 diff hist +338 N S-745 Created page with "Shelter for Electronic Shop AN/TSM-191(V). It is a modified S-280C/G. ==Reference File== * TM 11 5411-216-14&P, Operator, Unit, Direct Support (DS), and General Su..." current
- 19:14, 18 June 2019 diff hist +32 S-744
- 18:49, 18 June 2019 diff hist +1 S - Shelter
- 18:47, 18 June 2019 diff hist +34 S - Shelter
- 18:46, 18 June 2019 diff hist +30 S - Shelter →500 - on
- 18:44, 18 June 2019 diff hist +31 5411 current
- 18:34, 18 June 2019 diff hist +209 5411
- 18:33, 18 June 2019 diff hist +306 N S-744 Created page with "Shelter for Electronic Shop AN/TSM-191(V) ==Reference File== * TM 11 5411-216-14&P, Operator, Unit, Direct Support (DS), and General Support (GS) Maintenance Manual fo..."
- 14:58, 18 June 2019 diff hist +45 AN~TRC-109 →See Also current
- 14:57, 18 June 2019 diff hist +17 AN~TRC-109 →Major Components
- 14:55, 18 June 2019 diff hist +24 N CY-2429~GRC Created page with "File:PP-2054.GRC.jpg" current
- 14:54, 18 June 2019 diff hist +24 N CY-2428~GRC Created page with "File:PP-2054.GRC.jpg" current
- 14:52, 18 June 2019 diff hist +66 N PP-2054 Created page with "File:PP-2054.GRC.jpg Provided power for the T-893(P)/GRC." current
- 14:50, 18 June 2019 diff hist 0 N File:PP-2054.GRC.jpg current
- 14:39, 18 June 2019 diff hist +6 CY-2851 current
- 14:38, 18 June 2019 diff hist +87 N CY-2851 Created page with "File:CN-514 (CY-2851.U).jpg CY-2851/U Case of the Regulator, Voltage CN-514GRC"
- 14:34, 18 June 2019 diff hist +33 CN-514 current
- 14:33, 18 June 2019 diff hist 0 N File:CN-514 (CY-2851.U).jpg current
- 14:19, 18 June 2019 diff hist +4 AN~TRC-109 →Major Components
- 14:19, 18 June 2019 diff hist +13 AN~TRC-109 →Major Components
- 14:17, 18 June 2019 diff hist +139 N S-297 Created page with "The S-297/TRC-109 is the shelter of the AN~TRC-109 Radio Repeater Set. It is a modified S-318G shelter. File:AN.TRC-109.02.jpg" current
- 14:17, 18 June 2019 diff hist 0 N File:AN.TRC-109.02.jpg current
- 14:10, 18 June 2019 diff hist +952 N AN~TRC-109 Created page with "File:AN.TRC-109.jpg The AN/TRC-109 was a transportable LOS radio repeater assemblage used to provide radio or cable repeater communications facilities for the airborne co..."
- 13:53, 18 June 2019 diff hist 0 N File:AN.TRC-109.jpg current
- 13:46, 18 June 2019 diff hist +61 S-392 →Reference Files current
- 13:42, 18 June 2019 diff hist +210 N S-392 Created page with "The S-392/TTC-29 is the shelter of the AN~TTC-29 Manual Telephone Central Office. It is a modified S-250/G shelter. File:AN.TTC-29.jpg ==Reference Files== * TM ..."
- 13:25, 18 June 2019 diff hist +41 AN~TTC-29 →Major Components current
- 13:21, 18 June 2019 diff hist +29 AN~TTC-29 →Major Components
- 13:17, 18 June 2019 diff hist +532 N AN~TTC-29 Created page with "File:AN.TTC-29.jpg The AN/TTC-29 was an air- and vehicular transportable manual central office which provided switching for 60 battery telephones or trunk circuits. It wa..."
- 13:17, 18 June 2019 diff hist 0 N File:AN.TTC-29.jpg current
- 17:58, 17 June 2019 diff hist +92 AN~TRC-110 →Reference File current
- 17:45, 17 June 2019 diff hist +1 AN~TRC-110
- 17:44, 17 June 2019 diff hist +4 AN~TRC-110
- 17:43, 17 June 2019 diff hist +55 AN~TRC-110
- 17:37, 17 June 2019 diff hist +729 AN~TRC-110
- 04:16, 17 June 2019 diff hist +24 TD-202
- 04:15, 17 June 2019 diff hist 0 N File:TD-202.U.jpg current
- 04:07, 17 June 2019 diff hist -1 TD-204
- 04:06, 17 June 2019 diff hist +21 N TD-204 Created page with " TM 11-5805-367-25P/2"
- 04:06, 17 June 2019 diff hist +22 N TD-202 Created page with "TM 11-5805-367-25P/I-I"
- 04:03, 17 June 2019 diff hist +6 CN-514
- 04:03, 17 June 2019 diff hist +47 N CN-514 Created page with "TM 11-6110-245-15, Voltage Regulator CN-514/GRC"
- 03:59, 17 June 2019 diff hist +28 AN~TRC-110
- 03:59, 17 June 2019 diff hist 0 N File:AN.TRC-110.02.jpg current
- 03:54, 17 June 2019 diff hist -1 AN~TRC-110
- 03:53, 17 June 2019 diff hist +293 AN~TRC-110
- 03:38, 17 June 2019 diff hist 0 N File:AN.TRC-110.01.jpg current
- 19:33, 16 June 2019 diff hist +8 2000
- 18:00, 16 June 2019 diff hist +30 AN~TRC-110
- 17:53, 16 June 2019 diff hist +236 N S-298 Created page with "The '''S-298/TRC-110''' is the shelter of the AN~TRC-110 Radio Repeater Set. File:S-298.TRC-110.jpg ==Reference File== * TM 11-5820-535-15 ==See Also== 5820 ..." current
- 17:49, 16 June 2019 diff hist 0 N File:S-298.TRC-110.jpg current
- 17:44, 16 June 2019 diff hist +36 S - Shelter
- 17:33, 16 June 2019 diff hist +6 S-336 current
- 17:30, 16 June 2019 diff hist +25 AN~MSC-25 current
- 17:29, 16 June 2019 diff hist 0 N File:AN.MSC-25.5.jpg current
- 17:16, 16 June 2019 diff hist +31 S-371 current
- 17:10, 16 June 2019 diff hist +25 AN~MSC-25
- 17:10, 16 June 2019 diff hist 0 N File:AN.MSC-25.4.jpg current
- 16:51, 16 June 2019 diff hist +42 S-184 current
- 16:48, 16 June 2019 diff hist 0 N File:S-184.MSC-32.03.jpg current
- 16:41, 16 June 2019 diff hist 0 N File:S-184.MSC-32.02.jpg current
- 16:23, 16 June 2019 diff hist +1 AN~MSC-32 →MAJOR COMPONENTS current
- 16:22, 16 June 2019 diff hist +57 S-184
- 16:19, 16 June 2019 diff hist +78 S-184
- 16:17, 16 June 2019 diff hist +103 N S-184 Created page with "File:S-184.MSC-32.01.jpg The S-184/MSC-32 is the shelter of the AN~MSC-32 Operations Central"
- 16:13, 16 June 2019 diff hist 0 N File:S-184.MSC-32.01.jpg current
- 16:03, 16 June 2019 diff hist -4 5895 →224 AN~MSC-31 current
- 16:02, 16 June 2019 diff hist +115 5895
- 15:59, 16 June 2019 diff hist +285 AN~MSC-32
- 15:40, 16 June 2019 diff hist +15 AN~MSC-32A →See Also current
- 15:36, 16 June 2019 diff hist +28 AN~MSC-32A
- 15:35, 16 June 2019 diff hist 0 N File:AN.MSC-32A.03.jpg current
- 15:32, 16 June 2019 diff hist -1 AN~MSC-32A →MAJOR COMPONENTS
- 15:30, 16 June 2019 diff hist +70 AN~MSC-32
- 15:27, 16 June 2019 diff hist +29 AN~MSC-32 →Reference File
- 15:26, 16 June 2019 diff hist +94 N AN~MSC-32 Created page with " ==Reference File== * TM 11-5895-224-15 {{pdf|TM-11-5895-224-15.pdf|TM 11-5895-224-15 1961}}"
- 15:26, 16 June 2019 diff hist 0 N File:TM-11-5895-224-15.pdf current
- 14:50, 16 June 2019 diff hist +40 AN~MSC-32A →See Also
- 11:07, 16 June 2019 diff hist +34 TA-43~PT
- 11:06, 16 June 2019 diff hist 0 N File:TA-43.PT.jpg current
- 11:03, 16 June 2019 diff hist +64 TP-9 →References current
- 10:39, 16 June 2019 diff hist +2 SIG 7 Organizational Maintenance Allowances current
- 10:37, 16 June 2019 diff hist +170 TP-9 →References
- 10:36, 16 June 2019 diff hist +3 SIG 7 Organizational Maintenance Allowances
- 10:36, 16 June 2019 diff hist +15 SIG 7 Organizational Maintenance Allowances
- 10:35, 16 June 2019 diff hist +26 N SIG 7 Organizational Maintenance Allowances Created page with " * File:SIG 7-TP-9.pdf"
- 10:33, 16 June 2019 diff hist +4 TM Numbering Specification →SIG (Supply Publications)
- 10:29, 16 June 2019 diff hist +76 N TA-264 Created page with "11-2059 Telephone TP-9 and Telephone Set TA-264PT, 17 Oct. 1957 (SCRIBD.COM)"
- 10:28, 16 June 2019 diff hist +93 2000
- 10:25, 16 June 2019 diff hist +16 330
- 10:22, 16 June 2019 diff hist +150 320
- 09:02, 16 June 2019 diff hist 0 TA-43~PT →See Also
- 09:00, 16 June 2019 diff hist +130 TA-43~PT →Related Files
- 08:02, 16 June 2019 diff hist 0 TA-312~PT →See Also current
- 08:01, 16 June 2019 diff hist +54 TA-312~PT →Related Files
- 07:59, 16 June 2019 diff hist +54 TA-1~PT →Related Files current
- 07:58, 16 June 2019 diff hist +13 TA-1~PT →Related Files
- 07:57, 16 June 2019 diff hist +35 TA-1~PT →Related Files
- 07:48, 16 June 2019 diff hist +10 TT - Teletype
- 07:46, 16 June 2019 diff hist +21 TT - Teletype
- 07:37, 16 June 2019 diff hist +279 N TT-122 Created page with "File:TT-122.FG.jpg Teletypewriter Distributor-Transmitter TT-122A/FG was used in fixed station and mobile communcations centers to provide facilities for tape transmissio..." current
- 07:31, 16 June 2019 diff hist 0 N File:TT-122.FG.jpg current
- 07:30, 16 June 2019 diff hist +47 2250
- 07:07, 16 June 2019 diff hist +100 AN~TCC-1
- 07:05, 16 June 2019 diff hist +590 AN~TCC-20 current
- 06:58, 16 June 2019 diff hist +36 AN~TCC-20
- 06:57, 16 June 2019 diff hist -31 AN~TCC-20 →Major Components
- 06:55, 16 June 2019 diff hist 0 File:AN.TCC-20.jpg Cdewit uploaded a new version of "File:AN.TCC-20.jpg" current
- 06:52, 16 June 2019 diff hist +438 N TH-5 Created page with "File:TH-5.TG.jpg The TH-5/TG converted neutral dc signals from a teletypewriter to frequency-shift telegraph signals, and frequency-shift telegraph signals to neutal dc s..."
- 06:50, 16 June 2019 diff hist 0 N File:TH-5.TG.jpg current
- 06:30, 16 June 2019 diff hist +58 TH-15 current
- 06:29, 16 June 2019 diff hist +58 TH-13 current
- 06:29, 16 June 2019 diff hist 0 TH-14 →See Also current
- 06:28, 16 June 2019 diff hist +58 TH-14
- 06:26, 16 June 2019 diff hist +1 AN~TCC-4 →Reference File current
- 06:26, 16 June 2019 diff hist +62 AN~TCC-20
- 06:24, 16 June 2019 diff hist +256 AN~TCC-20