I already have my BPL buster up and running right now. It's called a 10-meter beacon! You will only need a Tech plus license at a minimum and no coronation requirements to put up a low power slow speed CW signal with a basic dipole antenna, a very cheap AM CB radio, and some way to key the PTT switch on and off corresponding to the beacon ID and location information. Here is a very good article on building one of these beacon stations.
http://www.4sqrp.com/resource/10m_beacon/10m_beacon.htm In this project a Norcal Keyer Kit was used but I went exceedingly cheap and easy here. I used a very slow motor drive used to rotate a circuit board "disk" with traces removed to correspond to my beacons call and location. The rotating disk keys the old CB very nicely. It's also easy to make a new disk at any time. It has been found that only a 2-watt 10-meter CW signal into a vertical located within 100 feet of an unshielded power line will induce enough RF on the power line to prevent BPL from operating properly for several miles. You might not think that a few watts would do it but in reality it is more than enough. Part 15 devices are limited to fractions of a watt. After I installed my Beacon I drove around my neighborhood and found my signal to be very strong under the power lines several miles away. At 3 miles I could not pick up my signal due to trees and houses but stopping under a power line my beacon signal could be picked up clearly on my mobile 10-meter transceiver and a 1/4-wave mobile whip antenna proving that my 10-meter beacon and it's vertical dipole had coupled to the power line located 60 feet away. --- expeditionradio <[EMAIL PROTECTED]> wrote: > > BPL-Busting Modes/Techniques Needed to Mitigate > Harmful Interference to Amateur Radio Service > > Undoubtedly, BPL systems operating in the ham bands > cause interference > to most of the analog and digital modes we presently > use for amateur > radio communications. Our main modes: SSB, FM, CW, > SSTV, RTTY, PSK31, > Pactor, and AM are vulnerable to most of the types > of BPL signal > interference. Unfortunately, common receiver > noise-blanking and DNR > techniques are inadequate to cancel the ugly BPL > pulsating and > multi-carrier signals. > > The Amateur Radio Service is, in essence, being > forced to adopt some > form of BPL-mitigation technology. > > The development of new amateur modes, semi-automated > and automated > frequency agile systems, advanced ARQ, and various > sorts of FEC > digital techniques could be a possible avenue for > amateurs to > "communicate through" the interference caused by > BPL. It may not be > possible to entirely eliminate the harmful > interference BPL creates, > but we need to start planning for it. We need to > research and > characterize the various types of BPL signals so > that we can design > modulation and control techniques to compensate for > them. > > Using radio engineering and digital signal > processing, we may be able > to develop "BPL-Busting Modes". These new modes and > systems could > carry any combination of voice/image/text/data. > Frequency hopping, > spread spectrum, wideband OFDM, multi-PSK, ALE, and > MFSK are > mode/systems that we could implement immediately in > new formats... but > we need the freedom within the FCC rules to advance > some of these. > Freedom that we don't have yet in USA. > > Under FCC current Amateur Radio Service rules, we do > not have the > freedom we need to take advantage of some of the > most useful > technologies that could help us to "communicate > through" BPL > interference. We are locked in a technology prison. > Hopefully, in the > near future, we will have more freedom... with > bandwidth-based > spectrum management. > > Bonnie KQ6XA > > > ,, > > > > __________________________________ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail The K3UK DIGITAL MODES SPOTTING CLUSTER AT telnet://208.15.25.196/ <a href="http://dxcluster.blogspot.com";><img src="http://feeds.feedburner.com/DigitalSpotter.gif"; height="67" width="200" style="border:0" alt="Digital Spotter"/></a> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
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