#coaxial — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #coaxial, aggregated by home.social.
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Forget the Coax, Wire Up Your Antennas with Cat 6 Cable https://hackaday.com/2025/01/15/forget-the-coax-wire-up-your-antennas-with-cat-6-cable/ #transimpedance #RadioHacks #feeedline #beverage #combiner #coaxial #balun #Cat6 #UTP
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Forget the Coax, Wire Up Your Antennas with Cat 6 Cable https://hackaday.com/2025/01/15/forget-the-coax-wire-up-your-antennas-with-cat-6-cable/ #transimpedance #RadioHacks #feeedline #beverage #combiner #coaxial #balun #Cat6 #UTP
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Forget the Coax, Wire Up Your Antennas with Cat 6 Cable https://hackaday.com/2025/01/15/forget-the-coax-wire-up-your-antennas-with-cat-6-cable/ #transimpedance #RadioHacks #feeedline #beverage #combiner #coaxial #balun #Cat6 #UTP
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Forget the Coax, Wire Up Your Antennas with Cat 6 Cable - These days, anything with copper in it is expensive. If you doubt that, a walk int... - https://hackaday.com/2025/01/15/forget-the-coax-wire-up-your-antennas-with-cat-6-cable/ #transimpedance #radiohacks #feeedline #beverage #combiner #coaxial #balun #cat6 #utp
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Forget the Coax, Wire Up Your Antennas with Cat 6 Cable - These days, anything with copper in it is expensive. If you doubt that, a walk int... - https://hackaday.com/2025/01/15/forget-the-coax-wire-up-your-antennas-with-cat-6-cable/ #transimpedance #radiohacks #feeedline #beverage #combiner #coaxial #balun #cat6 #utp
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Forget the Coax, Wire Up Your Antennas with Cat 6 Cable - These days, anything with copper in it is expensive. If you doubt that, a walk int... - https://hackaday.com/2025/01/15/forget-the-coax-wire-up-your-antennas-with-cat-6-cable/ #transimpedance #radiohacks #feeedline #beverage #combiner #coaxial #balun #cat6 #utp
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Forget the Coax, Wire Up Your Antennas with Cat 6 Cable - These days, anything with copper in it is expensive. If you doubt that, a walk int... - https://hackaday.com/2025/01/15/forget-the-coax-wire-up-your-antennas-with-cat-6-cable/ #transimpedance #radiohacks #feeedline #beverage #combiner #coaxial #balun #cat6 #utp
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Forget the Coax, Wire Up Your Antennas with Cat 6 Cable - These days, anything with copper in it is expensive. If you doubt that, a walk int... - https://hackaday.com/2025/01/15/forget-the-coax-wire-up-your-antennas-with-cat-6-cable/ #transimpedance #radiohacks #feeedline #beverage #combiner #coaxial #balun #cat6 #utp
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Making Sure Your Patch Cables Are Ready for RF Work https://hackaday.com/2025/01/08/making-sure-your-patch-cables-are-ready-for-rf-work/ #time-domainreflectometry #radiofrequency #RadioHacks #Patchcable #coaxial #testing #tdr #vna #RF
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Making Sure Your Patch Cables Are Ready for RF Work - How do you know that your patch cables are good? For simple jumper wires, a multim... - https://hackaday.com/2025/01/08/making-sure-your-patch-cables-are-ready-for-rf-work/ #time-domainreflectometry #radiofrequency #radiohacks #patchcable #coaxial #testing #tdr #vna #rf
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Coax Stub Filters Demystified - Unless you hold a First Degree RF Wizard rating, chances are good that coax stubs ... - https://hackaday.com/2024/07/21/coax-stub-filters-demystified/ #amateurradio #radiohacks #impedance #bandpass #matching #coaxial #filter #stub #ham #rf
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draft - idea
Standardize Coaxial power connector sizes/functions + enable high speed data over coax
https://en.wikipedia.org/wiki/Coaxial_power_connector
according to the wiki it looks like there are "several" standards. maybe the governing bodies could try to focus on one or two standards .... e.g. a "smaller" one for laptops / electronics and a "larger" one for larger applications
regarding usbc...i mean, sure. but then Microsoft should require/force windows computer makers to use USBC for charging - even on the "cheaper" windows laptops. no more barrel connectors. unless it becomes a standard like USBC.
#usbc
#microsoft
#chromebook
#usb
#powerdelivery
#energy
#EthernetoverCoaxAdapter
#usbcovercoax
#dataovercoax
#coaxial
#coaxialpower
#coaxialpowerconnector
#electronics
#Laptop
#laptops -
在聊完線材 #同軸電纜 #Coaxial cable
接下來就來聊聊 #10BASE2先說說 10BASE2 這個詞是什麼
它主要是在規範網際網路協定上面實體層的標準
通常用 OOOBASE-X 來表示
舉個例子常見的 1G 雙絞線網路就被稱為 1000BASE-T
前面標示速度
後面標示介質
其中-T表示 #雙絞線 的意思常看到的 10G 沿用 Cat6 或是 Cat6A 線材被稱為 10GBase-T
而10G 光纖網路就比較複雜
因為 #光纖 的規格眾多
所以像是 10GBASE-SR、10GBASE-LR 都是 10G網路的標準回到 10BASE2
指的就是 10Mbps 網路
透過同軸纜線與 BNC 端子連接各個終端裝置
只需要額外的線材不需要額外的 #Hub 或是 #Switch 就能串聯多台電腦當然缺點很明顯
每個裝置之間沒有獨立頻寬
而且要等待一次的傳輸結束後
才能繼續下一次的傳輸到了 100Mbps
協定中就沒有透過同軸傳輸的標準了 -
用幾篇文來分享一下 #同軸網路
先介紹一下同軸網路的主角 #同軸電纜 #Coaxial cable
同軸電纜因為整條線的構成都共用同一個中心軸線而得名
因此把同軸線剪開會獲得一個同心圓同軸線主要由四個元素構成，由內而外分別為：
中心導體、絕緣隔離材料、金屬隔離材料以及外部絕緣材料在現代的人家中
同軸線最常見的應用就是電視訊號線
從最早期的無論是無線電視
或是後來的有線電視
即使是現在的數位電視搭配網路機上盒
部分廠商仍然也會使用同軸電路來進行訊號傳輸相信圖中的壁插大家應該不陌生
這個 #F端子 後面所跑的線路就是同軸電纜
在台灣最常被使用在電視訊號的用途而同軸電纜因為每公尺的造價低廉
並且其抗干擾、抗凹折的能力也不遜色
因此在光纖線尚未普及的時候
同軸線就是主要被廣域鋪設的電信通訊纜線之一
這也埋下了廣域網路發展的其中一個伏筆因為篇幅XD
這篇先寫到這邊
下一篇來聊一下透過同軸纜線接駁的區域網路標準 #10BASE2 -
#ACM named #Robert #Metcalfe recipient of the 2022 ACM A.M. #Turing #Award for leading the invention, standardization, and commercialization of #Ethernet local-area networking technology.
Metcalfe is Emeritus Professor of Electrical and Computer Engineering (ECE) at The University of Texas at Austin.
In 1973, while a Research Scientist at the Xerox Palo Alto Research Center ( #PARC ), Metcalfe circulated a now-famous memo on May 22, 1973 describing a "broadcast communication network" for connecting some of the first personal computers, #Altos, within a single building.
The first Ethernet ran at 2.94 megabit per second, which was ~10,000 times faster than the terminal networks it replaced starting in 1973.
Although the original design proposed implementing this network over #coaxial #cable, the memo envisioned "communication over an #ether" making the design adaptable to any future innovation in media technology including legacy telephone twisted pair, optical fiber, radio, and even power networks, to replace the coaxial cable as the "ether". That memo laid the groundwork for what we now know today as Ethernet.
The Ethernet architecture was developed to address Xerox's need to connect 100 of the new Alto personal computers and their new laser printers. The original architecture was based on a single wire bus with a single transceiver per node, thus enabling a cost-effective design.
The media access control in the Ethernet design incorporated Metcalfe's insights from his experience with Norm Abramson's RIP #ALOHAnet.
Metcalfe recruited David Boggs RIP to help build a 100-node Ethernet in two years. That first Ethernet was then replicated within Xerox to proliferate a corporate internet.
Metcalfe and Boggs' classic 1976 CACM article, "Ethernet: Distributed Packet Switching for Local Computer Networks," described the design of Ethernet. Metcalfe then led a team that developed the 10Mbps Ethernet, deployed internally at Xerox and forming the basis of subsequent standards.
https://awards.acm.org/award-recipients/metcalfe_3968158# -
Gimballed Omnirotor Goes Over Great Obstacles - What can drive on the ground, hop in the air, and continuously move its coaxial ro... - https://hackaday.com/2021/11/13/gimballed-omnirotor-goes-over-great-obstacles/ #2021hackadayprize #thehackadayprize #searchandrescue #obstaclecourse #dronehacks #gimballed #omnirotor #coaxial #gimbal
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Homebrew Loop Antenna Brings the Shortwave World to You - Radio may be dead in terms of delivering entertainment, but it’s times like these when the original ... more: https://hackaday.com/2020/04/12/homebrew-loop-antenna-brings-the-shortwave-world-to-you/ #radiohacks #shortwave #coaxial #balun #noise #oroid #radio #coax #loop #unun #sdr