BPL Broadband over PowerlinesJory McIntosh, KJ5RMARRL .ppt
《BPL Broadband over PowerlinesJory McIntosh, KJ5RMARRL .ppt》由会员分享,可在线阅读,更多相关《BPL Broadband over PowerlinesJory McIntosh, KJ5RMARRL .ppt(23页珍藏版)》请在麦多课文档分享上搜索。
1、BPL Broadband over Powerlines Jory McIntosh, KJ5RM ARRL Assistant Section Manager NTX BPL Task Force KJ5RMKJ5RM.NET HTTP:/WWW.TEXASBPL.COM,Murder on the Power Pole The Impending loss of our Amateur Radio bands?,What is BPL?,BPL: Broadband over Power Lines Designed to get high-speed internet access t
2、o rural locations. Uses power lines to transmit data using RF from 2 to 80 MHz Throughput speeds per line 60Mb/ 1Mb per user Uses 802.11b to get signal from pole to user. Each BPL unit costs around $5000,The Technology of BPL,Three Parts of BPL Internet connection to Injector 802.11b/ethernet, T1 In
3、jector converts and “injects” data onto line Repeater, every 1200 feet boosts signal Connection box. 802.11b, or Ethernet,So whats the Big deal?,Powerlines are long unshielded wires. What is your antenna made of? Wire What happens when you inject a RF signal on a wire? It becomes an antenna and radi
4、ates! Nothing like having a spark gap in your backyard. Look around you and see how many powerlines there are. Remember they are using 2-80Mhz from 75M thru 6M,Taking out Ham Radio without Firing a Shot,How many of you use or have used HF or 6 meters in the past year? How about 2M SSB? How many of y
5、our are Tech, Tech Plus, General, Advanced, Extra. A representative of the Power Line industry demotes you to Tech NO-Code, with 440 and up only. Thats the effect of BPL!,What they think about us!,“UPLC also commented on amateur radio opposition to the technology, urging the Commission to ignore “ar
6、mchair amateurs that still use vacuum tube transmitters“ and listen to the reputable companies and entrepreneurs who are the real experts on BPL and who have overcome enormous technical obstacles to make BPL a reality in the U.S.“ http:/www.uplc.utc.org/?cbr_v=dcb&nt=true&cbr_ei=25276&p=admin&ct=con
7、tentbrowser,Myths about BPL,Its not going to effect me, I am in a big city.Wrong! Its here now, Irving, Houston, and more on the way. I am a No-Code Tech so I am not effected.Wrong! Testing showed signals through 147 Mhz due to Harmonics and mixing! 6 meters is heavily effected! Ill fire up my big a
8、mp and show them!Wrong! Think about it.,Other Countries that have said No!,The following counties forbid BPL due to interference concerns: Japan Finland The Netherlands Norway Great Britain Poland Germany,Heres the goods,Results from test In Irving using Yaesu FT-100, Full DSP, 2.4 Khz Filter ATAS-1
9、00 Antenna, 150 feet from BPL Unit.,More goodies from the test,BPL signal is wide ranging audio signal spaced every 3 kHz. Each BPL inducer/repeater works in a different bandwidth. One may be centered on 40 meters on one pole and 20 on the next pole. Multiple repeaters causing mixing and harmonic in
10、terference causing a full wipe of the amateur bands below 30 MHz. Mile away signal was S5 to S7 on 17 meters! Signals were still detectable at S1, mile away. Hams living within 1 mile of test site were heavily effected! BPL Signals detected on 144.340 Mhz! System was scheduled to be taken offline 10
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
本资源只提供5页预览,全部文档请下载后查看!喜欢就下载吧,查找使用更方便
2000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BPLBROADBANDOVERPOWERLINESJORYMCINTOSH KJ5RMARRLPPT

链接地址:http://www.mydoc123.com/p-379093.html