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Berichten
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Door Drs. IJzerbout · Geplaatst:
This is the array at DL7APV. He died yesterday, and was a well known EME advocate. I post this because his antenna is rather unusual. THis is his 432 MHz EME antenna. It is made of 128 11 element yagi beams (all home made, designed by a friend of his). This means its a 1408 element antenna. It offers about 33.7 dB gain over a dipole. THAT MEANS: If you feed it with 1000 watts, you get an ERP of 2,370,000 watts. Impressive, but what you may find even more interesting, is there is no coax in the array. The entire phasing harness is made of open wire ("ladder") line (which he made himself). This keeps losses VERY low, as open wire line, properly made, is way less lossy than even the best coax/heliax/hardline. Also, all driven elements are folded dipoles, so there is no loss in "gamma match" rods like in the average Yagi. Since the folded dipole is a balanced feed dipole, the open wire line is a good way to feed these yagis. There is a balun at the bottom where the transformation from open wire line to low loss coax takes place, then low loss coax goes to his shack. Click on the image to see more detail. (The Yagis across the top are on 2 meters, all the rest are the 440 yagis, you can barely see their elements. EDIT: WRONG, those are 3 meter yagis for FM Broadcast reception, apparently , he used FM broadcast signals to to detect VHF band openings.) 73 and happy Monday, WR8Y -
Door de vrije fries · Geplaatst:
hoi, / coderingsnieuws e.d.: * betekent gecodeerd / zal worden gecodeerd. ** WAARSCHUWING - Technisch gebabbel hieronder! ** Eutelsat Hot Bird 13F/G - 13° oost: Pakket esports-kanalen op 13° Oost Technische parameters: (PID V/A/PCR/SID) Eutelsat Hot Bird 13G (13°O) tp. 2 (11,240 GHz, pol. V, SR: 27500, FEC: 5/6; DVB-S2/8PSK) Provider: ECLUTCH - GINX (1001/1002/1001/100; MPEG-4/HD; Viaccess) - BIGG TV (1011/1012/1011/101; MPEG-4/HD; Viaccess) - Gametoon (1021/1022/1021/102; MPEG-4/HD; Viaccess) - ESR24 (1031/1032/1031/103; MPEG-4 /HD;Viaccess) -
Door de vrije fries · Geplaatst:
hoi, / coderingsnieuws e.d.: * betekent gecodeerd / zal worden gecodeerd. ** WAARSCHUWING - Technisch gebabbel hieronder! ** Hellas Sat 2 39° Oost: CHANNEL Name: "HS-TV1" TRANSPONDER 11769, H, 28333 39.0°E (0390 - Hellas Sat 3/4) VIDEO 4:2:0 720x576 50fps 4891kbps 16:9 IDs NetwordID: 1 TransponderID: 4 ServiceID: 16 PIDs Video: 1001(H.264) Audio: 1002 - PCR: 1001 PMT: 1010 Teletext: 0 CHANNEL Name: "HS-TV2" TRANSPONDER 11769, H, 28333 39.0°E (0390 - Hellas Sat 3/4) VIDEO 4:2:0 720x576 50fps 4962kbps 4:3 IDs NetwordID: 1 TransponderID: 4 ServiceID: 13 PIDs Video: 2031(H.264) Audio: 2032 - PCR: 2031 PMT: 1020 Teletext: 0 CHANNEL Name: "HS-TV3" TRANSPONDER 11769, H, 28333 39.0°E (0390 - Hellas Sat 3/4) VIDEO 720x576 50fps 6109kbps 4:3 IDs NetwordID: 1 TransponderID: 4 ServiceID: 15 PIDs Video: 2051 Audio: 2052 - PCR: 2051 PMT: 2050 Teletext: 0 CHANNEL Name: "HS-TV4" TRANSPONDER 11769, H, 28333 39.0°E (0390 - Hellas Sat 3/4) VIDEO 4:2:0 720x576 50fps 6696kbps 16:9 IDs NetwordID: 1 TransponderID: 4 ServiceID: 14 PIDs Video: 2041(H.264) Audio: 2042 - (AAC-ADTS) PCR: 2041 PMT: 1040 Teletext: 0 bron: https://www.medienboardonline.de -
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Door Pluizebol · Geplaatst:
Die heb ik niet, Ik gebruik al jaaaaaren enkel "Windows security / Microsoft Defender"
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