Home |
Search |
Today's Posts |
#41
![]() |
|||
|
|||
![]()
On Aug 19, 12:20*pm, Richard Clark wrote:
On Tue, 19 Aug 2008 09:02:39 -0700 (PDT), DES wrote: That fix is going to be the same if power levels don't go down for any reason (issues of morality notwithstanding). *The judicious and liberal application of Ferrite RFI suppressors will solve a lot of your suffering. Look at any of your computer display leads and notice the end of the cable with the odd bulge before one connector. *That is a suppressor. It is nothing more than a ferrite donut or tube. *Ferrite is a magnetic ceramic (it will break like china if you drop it). *It is made in many forms and appears to be dark gray with a slick to dusty finish. *The Ferrite RFI suppressors available at Radio Shack come with a plastic clamshell holding one of these tubes that is split lengthwise so you can open it, insert a wire or wires, and then lock it shut. *This makes it reusable if the problem isn't solved with your choice of wire(s) or where you apply it. This last suggests experimentation on your part is necessary. *It also means you are going to need more than one given you have described a number of issues. *For a start, get two or three and see how well they work on the power cords going to the affected component (TV, radio, computer) and even with both wires of any speaker. *In short, put a suppressor on any interconnecting cable or wire and see if symptoms change. 73's Richard Clark, KB7QHC Alright, I'm just gonna do that, because I can't take it anymore. |
#42
![]() |
|||
|
|||
![]() "Wouff Hong" wrote in message m... He might be a licensee, but if he didn't pass a code test he's not a real ham. Real hams had to pass a code test. With that at the beginning of a post, do you want to rely on what follows? You know the guy's just labeled himself a troublemaker. |
#43
![]() |
|||
|
|||
![]()
On Tue, 19 Aug 2008 08:54:14 -0700 (PDT), DES , in
an obviously impaired state, wrote: What the hell, public forum or not, I need some help here, and this guy is giving legal users a bad name. I've approached the guy *several* times over the past few yrs and asked him very nicely to lower the boost/gain (whatever it's called) on his radio and he has complaied to a certain extent. His broadcast were only coming through my stereo speakers during low passages at the time. As of a few months ago, it is now so bad, that his broadcast are now coming through my TV speakers, and causing horizontal lines in the picture. (on all four of my TV's) And it's so bad on my computer speakers now, that I have to turn them off. As far as listening to my stereo, I can't even do that now if he is broadcasting. So I approached him again, only this time, he told me to "F off", that "he wasn't doing anything illegal". When I got home, not only was the broadcast even louder, he was telling one of his radio buddies about the "incident" in FULL detail. So, I know for a FACT it is him. I know just need to know what kind of radio he is using. Question, can a CB transmit Yes. A CB can transmit. Now, about your problem. Here's the deal. Your stereo, your TV and even your CD players are all FCC Part 15 devices. That means that they are at fault if they are receiving interference from properly operated, licensed equipment. Your Good Buddy neighbor, operating CB or Amateur Radio is operating under FCC rules part 97 and/or 95. As such, their operation is protected by the Federal Government. What that all means is this: THE RESPONSIBILITY FOR MITIGATING ANY INTERFERENCE ISSUES FALLS FIRST ON YOUR SHOULDERS. Have a nice day... -- Raymond Sirois - KU2S http://www.hamxam.org 10-10 #70270 |
#44
![]() |
|||
|
|||
![]()
DES wrote:
Cable. And the house was completely rewired inside and out about 4 yrs ago. Just had the cable company out here last week, and they said there was nothing they could do because everything was in working order. Did things get better or worse when they did? It's simple to test, just DISCONNECT the cable from your TV's and stereo and see what happens. Make sure to unplug any cable boxes you have from the wall, because they may be picking up the signal and leaking it into the power lines (rare but not impossible). No strange voices from them, wiggly pictures, etc, then it's likley a cable problem. Cable systems can have bad grounds, poorly installed connectors, improperly sheilded amplifiers and so on too. As someone else said the cable company's subcontractors are not always able to tell if anything is wrong with the instalation or the equipment. BTW. do you have a cable modem for the Internet? I'm guessing their is a common thing here, and it's the cable system. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM |
#45
![]() |
|||
|
|||
![]()
On Aug 20, 11:56*am, Jim Higgins wrote:
Before doing anything with this information I think you need to follow all of the other good advice you've received in this forum for mitigating the problem on your end. I've already stated that I'm getting the filters. There is an electronics specialty store close by that carries all sizes and range in price from 50 cents to a $1.50. |
#46
![]() |
|||
|
|||
![]() "Dave Platt" wrote in message ... He has been getting louder and louder over the years to the point of what I described in my earlier post about the problem with the TV's now. And even the very first time I approached him, I mentioned that I knew he was broadcasting illegally, Bad way to get on someones good side. Usually considered fightin' words. Some places you can look up the local ham club and ask for help correcting at your end if you don't point fingers. As for myself and others I was brought up with, it was standard proceedure to insure cleanliness at our end, and bend over backward to make sure our neighbors were happy. Things like this aren't being taught in the seminars, nor is the knowledge getting through to newer recruits. I also had problems with a neighbor at one point and described to him exactly how to fix it at his end and due to his beligerance, he raged for another year before actually taking my advice, then appologizing and in fact THANKING me for the best TV reception he had never seen before. Take the step by step approach. Do away with any antenna Amp if possible and check for flaky connectors and cables. RG-59 cables should be thrown out in favor of RG-6 Quad shield for all TV cables including jumpers. All the the following is your best advise, but I find the snap together type of ferrites to have marginal results. Use the large Doughnut type that will allow you to loop the connector through several turns (4-10) for the Speaker wires and for the TV cable too (but use large loops to avoid kinking) just before going into the amplifier or stack. This is a good way to tidy up extra wire. Two or three doughnuts do better if you need extra protection This keeps the energy from riding along the cable right into the chassis where unintended bad things happen. With this setup I am able to watch of-the-air broadcast TV while operating a 500 watt station in the same room. I haven't bothered with the computer speakers in the next room though. They pick up the data noise from nearby cellphones but not the ham station... Go figure! Well, I have some good news and some bad news for you. Let's do the bad news first, OK? As others have pointed out, it's entirely possible that your neighbor is transmitting legally. If he has a ham license, he could be transmitting with power levels of up to 1500 watts, in most bands, and still be entirely within the bounds of his license. The fact that he "didn't deny" that he was "broadcasting illegally" isn't proof, by any means. He may simply have not wanted to get into an argument with a neighbor who was making harsh accusations without proof or evidence (and, sorry to say, I *am* referring to you here). Unless you have evidence that he's transmitting without a license, or in ways which violate whatever license he has, you don't have much legal leverage, and probably won't be able to persuade anybody to do anything on your behalf. As others have pointed out... if a stereo amplifier, or loudspeaker, or telephone starts picking up and reproducing radio transmissions, then *this* device is defective/broken/badly-designed. This is a condition referred to as "undesired operation" - the phone or speaker is reacting to something (a strong RF field) which is irrelevant to this device's normal mode of operation. It is the position of the FCC that such "undesired operation" is a defect in the device in question, and not the fault of a (legal) radio transmission. It's is technically possible (and not all that difficult) to shield and filter devices such as amplifiers and phones so that they don't react to RF fields. Some manufacturers skimp on this filtering and shielding, in order to save money... and if the consumer buys such a device (rather than a more expensive, better- designed one) then any problems which result are the responsibility of the consumer and the device's manufacturer. Many, many consumer electronics devices these days come with a "Part 15" label or advisory, on the device or in the manual. Part of the wording says these devices "must not interfere" with licensed radio services, and "must accept" interference from both licensed and unlicensed radio services "including interference which causes undesired operation". That's the bad news. Now, for the good news. It's usually possible to add some after-market RF suppression devices to the affected components, and greatly reduce or entirely eliminate the interference. You can buy such devices over the counter or by mail, and they're not expensive. For phones, a small filter which plugs in between the phone cord and the wall outlet will often do the trick. Plug-in DSL filters are commonly available and will probably do the job well enough. For loudspeakers and stereos - in most cases I've seen, the RF is being picked up by the wires between the speaker and amplifier or PC... the wires act as antennas, carry the RF into the amplifier section, and the amplifier "detects" the RF by accident and converts it to audio and amplifies it. It is often possible to entirely eliminate such unwanted pickup by adding an interference suppressor (a.k.a "choke" or "ferrite") to each speaker wire, right before it enters the amplifier. The commonest variety is a "snap-on" two-part ferrite - snap it open, wind the speaker wire through it a few times (leaving a short stub of wire at the end), snap it closed, and reconnect the wire to the amplifier/receiver. With amplified speakers (computer or subwoofer), put a ferrite right at the speaker end of the wire. Adding ferrites to the AC power cords of the receiver, amplified subwoofers, etc. is also a good idea. For TV interference, you may need a "high-pass filter" connected in the antenna line right at the TV. This will keep the strong RF signal from your neighbor's transmitter out of the TV set's receiver. Ferrites and filters are probably available at your local Radio Shack, or by mailorder from quite a few suppliers. For further information about actually solving the problem, I'd suggest that you look at the ARRL's extensive collection of information about this issue. Start at http://www.arrl.org/tis/info/rfigen.html for a table of contents and a good overview of the basic issues involved. The "Information for neighbors of hams" page is also worthwhile reading. Oh... if you want to know whether your neighbor is a ham, you may be able to find out from: http://wireless2.fcc.gov/UlsApp/UlsS...rchLicense.jsp Click "Amateur", then plug in your zipcode and do a search. See if your neighbor's name comes up. However, even if your neighbor doesn't have a ham license, and is transmitting on CB, it's entirely possible that his transmissions could be getting into your radio even if they were limited to legal power... and if so, he wouldn't be under any obligation to stop transmitting or reduce power. -- Dave Platt AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#48
![]() |
|||
|
|||
![]()
On Aug 20, 10:22*pm, "JB" wrote:
"Dave Platt" wrote in message ... He has been getting louder and louder over the years to the point of what I described in my earlier post about the problem with the TV's now. And even the very first time I approached him, I mentioned that I knew he was broadcasting illegally, Bad way to get on someones good side. *Usually considered fightin' words. Really? You have no idea about how the conversation transpired. |
#49
![]() |
|||
|
|||
![]()
DES wrote:
On Aug 20, 10:22 pm, "JB" wrote: "Dave Platt" wrote in message ... He has been getting louder and louder over the years to the point of what I described in my earlier post about the problem with the TV's now. And even the very first time I approached him, I mentioned that I knew he was broadcasting illegally, Bad way to get on someones good side. Usually considered fightin' words. Really? You have no idea about how the conversation transpired. He knows enough that you told the neighbor he was broadcasting illegally. Just like you said. So okay. Do you want to solve the problem, or do you want to be one of the stories on Dateline some evening? About the two nieghbors who couldn't get along, and it escalated into something much worse... Perhaps it isn't important for you to get along with your neighbors, but you made it a lot harder to fix the problem. If this person is a Ham and operating legally, it's your responsibility. In most cases the Ham is really happy to help, because in most cases, they just want to be a good neighbor. Oh, but wait, you already poisoned the waters. After all, He's doing this illegally, eh? On the other hand, if he is a CB'er using illegal power, you have a whole lot more leverage. You can turn him in to the F.C.C. and they can take care of the matter. But wait! He knows exactly who turned him in, doesn't he? But your attitude here in the group, where people are actually trying to help you, indicates that you might be just as worried about "being right" as you are about having the problem fixed. People try to give good advice, and you get p***d off at them. Have fun! - 73 de Mike N3LI - |
#50
![]() |
|||
|
|||
![]()
And even the very first time I approached him, I mentioned that I knew
he was broadcasting illegally, Bad way to get on someones good side. Usually considered fightin' words. /Really? /You have no idea about how the conversation transpired. Truly... I see you weren't interested in anything else I said. Perhaps the conversation was worse than I imagined. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
For Shortwave Listeners (SWLs) : Which is Better to Use ? a FM Folded Dipole Antenna ? -or- a Whip Antenna ? | Shortwave | |||
Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use : Antenna Tuner? and/or Pre-Selector? | Shortwave | |||
Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use : Antenna Tuner? and/or Pre-Selector? | Shortwave | |||
Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use : Antenna Tuner? and/or Pre-Selector? | Shortwave | |||
Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use : Antenna Tuner? and/or Pre-Selector? | Shortwave |