In theory they can insist that the transmitter is part 15 compliant which most hobby units are not. That is not to say that this unit or any other will cause the FCC to bother you just to bare in mind that the lower the power you use the less likely you will be to have your transmitter called into question. The FCC did a study last year of many hobby units including many of the FM to car radio units and found them to be noncompliant so....
Having said all that a unit whether compliant or not that only transmits around your home won't cause you problems (basically because no one else can hear it!). ----- Original Message ----- From: "Bob Seed" <[EMAIL PROTECTED]> To: "PC Audio Discussion List" <pc-audio@pc-audio.org> Sent: Wednesday, September 12, 2007 8:02 PM Subject: Re: Accessible FM transmitters > Good guidelines to follow. When I suggest pushing the envelope I am not > suggesting that you should broadcast beyond the limits of this > transmitter. > You certainly don't want to annoy your neighbour with interference. Most > of > us simply want a transmitter to cover the area of an average home in order > to re broadcast satellite radio or other audio programming that is > generated > from a computer data base. In this case there is no need to get a > transmitter that is FCC or IC compliant. It is only when you apply for a > formal broadcast licence that the FCC will insist that the transmitter > meets > their standards, and is FCC compliant. In other words an FCC compliant > transmitter is one that has been approved and has met the stringent > standards that have been set by the FCC. > Personally I would not want to risk being caught with an illegal > transmitter, as the fines are very steep. Somewhere in the 10-thousand > dollar range. > > ----- Original Message ----- > From: "Dave McLean" <[EMAIL PROTECTED]> > To: "PC Audio Discussion List" <pc-audio@pc-audio.org> > Sent: Wednesday, September 12, 2007 4:30 PM > Subject: Re: Accessible FM transmitters > > >> Just want to clear up what might be a slight misconception at least with >> regard to hobby broadcasting in the U.S. >> Hobby broadcasting is governed under FCC part 15 of the FCC rules and >> regs. >> These rules are summarized below. Thanks to the Ramsey Electronics >> Bulletin >> Board from which I copied this info. >> >> Hello All, >> >> After you read my post, please do not respond with comments about "go for >> it", "relax and have fun", "you won't hurt anybody and won't get caught", >> or >> many of the other criticisms which have resulted when someone, such as I, >> explain the reality of the FCC rules regarding part 15 FM. My intent is >> not >> to >> tell anyone what to do or what not to do; it is to provide information so >> those who are interested can have a knowledge base from which they can >> decide >> on their own how to proceed. If I state technical or other inaccuracies, >> I >> will welcome and acknowledge corrections. >> >> The FCC rules for unlicensed operation in the FM band limit, among other >> things, the field strength to 250 microvolts per meter measured at 3 >> meters. >> This >> is not a limit on power, transmission lines, grounds, nor antennas. This >> limit actually includes the effects of all of these variables and focuses >> only >> on the outcome. To put this field strength in perspective, this field >> strength can be produced by about 11 nanowatts into a dipole antenna. One >> nanowatt >> is one one millionth of a milliwatt, so the information typically >> mentioned >> about 25 milliwatt transmitters is not only not presenting any meaningful >> information >> about compliance with the FCC rules, it is misleading people into >> believing >> that this power is the norm for legal hobby FM. A 25 milliwatt output >> delivered >> to a typical antenna will exceed the field strength limit by about 1400 >> times. Many have been cited and fined where the citations mention field >> strengths >> in the range of that which can easily be produced by 25 milliwatt >> transmitter output power. >> >> If you don't think this is something to consider, check these links (look >> for NOUO and NAL): >> >> http://www.fcc.gov/eb/FieldNotices/ >> >> http://www.fcc.gov/eb/Orders/Welcome.html >> >> You will see that there are many citations and fines for unlicensed >> operation on the FM band. You might think that the kit your built is OK >> but >> consider >> the information on the following links, especially with regard to the >> calculated "milliwatt" transmitter powers which resulted in FCC actions: >> >> http://part15.us/node/1375#comment-4249 >> >> http://www.part15.us/node/716#comment-1578 >> >> You might assume that because you bought a FM transmitter kit from a good >> source (such as Ramsey) that it is going to be legal to put it on the >> air. >> This >> is not true unless you can, by some means, assure that you comply with >> the >> rules. All of the FM transmitter kits of which I am aware are NOT FCC >> certified >> nor type accepted. It is legal to offer these for sale as kits, but the >> responsibility for legal use falls on the user. There is no assurance to >> be >> gained >> that you will not have a problem just because you bought and assembled a >> kit >> from a reputable manufacturer. It is up to you! >> >> I have a Ramsey FM transmitter and I have limited the range of this unit >> to >> less than 200 feet. Why? Because the FCC itself has published an >> information >> sheet which states that this is the approximate range to expect from a >> legal >> station. I have no other means to judge my compliance with the >> regulations, >> but this is probably close enough. >> >> You can achieve, with the kits available and simple antennas, much >> greater >> range but consider that you cannot do so legally in the US. A cavelier >> attitude >> on the part of those who operate FM transmitters built from kits and who >> intentionally or unintentionally violate the rules may result in, by a >> change >> in the rules, the complete elimination of FM transmitter kits from the >> market >> >> It is your choice regarding what you do. It is my hope, after you have >> read >> this, that you will do so knowing what is involved. >> >> Neil >> >> >> ----- Original Message ----- >> From: "Bob Seed" <[EMAIL PROTECTED]> >> To: "PC Audio Discussion List" <pc-audio@pc-audio.org> >> Sent: Wednesday, September 12, 2007 4:02 PM >> Subject: Re: Accessible FM transmitters >> >> >>> Oops, I wouldn't recommend going that route! There are very strict rules >>> governing FM broadcasting in the United States and Canada. Anything over >>> 1 >>> watt requires a broadcast licence, and you have to ensure that the >>> frequency >>> that you are transmitting on is not being occupied by another >>> broadcaster. >>> The FM transmitter that is being recommended on this site is more than >>> adequate to cover the average home. The seller of the unit is not >>> responsible for any modification done to the unit in order to broadcast >>> beyond the recommended coverage area. . >>> \ >>> From: "DJ DOCTOR P" <[EMAIL PROTECTED]> >>> To: "PC Audio Discussion List" <pc-audio@pc-audio.org> >>> Sent: Wednesday, September 12, 2007 12:42 AM >>> Subject: Re: Accessible FM transmitters >>> >>> >>>> Hello Russell,this is John. >>>> I have been doing some research on transmitters and amplifiers. >>>> You can take one of these transmitters that was designed for home use, >>>> and >>>> hook it up to a 1000 watt amplifier. >>>> This will allow you to broadcast all over town, that is, if you wanted >>>> to. >>>> Based on this, I will try to set up my own gospel radio station, and >>>> run >>>> it >>>> out of my house. >>>> But however, for starters, the $340 fm radio transmitter with a 1000 >>>> watt >>>> amplifier witch will cost around $500, will do the trick for me. >>>> The Bose and or any radio will pick up a signal this strong. >>>> The thing that you may have to do, is get an FCC license to broadcast. >>>> This is something that I'm still trying to figure out how to go about >>>> obtaining. >>>> Just as soon as I find out how, I will post it here in pc audio. >>>> John Price. >>>> >>>> ----- Original Message ----- >>>> From: "russell Bourgoin" <[EMAIL PROTECTED]> >>>> To: "PC Audio Discussion List" <pc-audio@pc-audio.org> >>>> Sent: Tuesday, September 11, 2007 4:31 PM >>>> Subject: Re: Accessible FM transmitters >>>> >>>> >>>>> Hi Jonathan, >>>>> >>>>> I'm very interested in purchasing a unit as you describe in >>>>> your mail. When you say its priced on the high side, how high is >>>>> high? And, did they charge more for adding the features that you >>>>> requested? Is there a contact that you have to whom I could speak to >>>>> obtain a unit tricked out as is yours? >>>>> >>>>> I do some dejaying at fish and gun club functions. Often I >>>>> bring a few large bose accoustic waves and place them outside facing >>>>> the say, family day activities. The cooking crew is off at the >>>>> barbecue pit and are out of range of the bose radios that I bring, so >>>>> they park their trucks around the pit and tune radios >>>>> in. Unfortunately, they are out of reach of the c crane transmitter, >>>>> altered as it is. Hence my interest in the unit you describe. Any >>>>> info is surely appreciated. >>>>> >>>>> Rusty >>>>> > At 10:19 AM 9/11/2007, Bob Seed spake thusly:- >>>>>> couple of months ago, there was a great thread on this list about FM >>>>>>transmitters. A user recommended the transmitter found at >>>>>>http://www.wavemach.com. >>>>>> >>>>>>I purchased one of these and am thrilled. The range is huge, the >>>>>>construction solid, no nasty power hum, very good stereo separation, >>>>>>in >>>>>>short, no complaints whatsoever. I got him to add a level control that >>>>>>allows me to set the line in for the two RCA sockets, and he also >>>>>>added >>>>>>small buttons for setting the frequency. It has a standard antenna >>>>>>socket >>>>>>at >>>>>>the back and comes with a very solid little antenna, not just a wire. >>>>>> >>>>>>So if you're looking for an FM transmitter, this one is definitely >>>>>>worth >>>>>>a >>>>>>look, but it is on the high end of the price range. You definitely get >>>>>>what >>>>>>you pay for though. >>>>>> >>>>>>Jonathan >>>>>> >>>>>> >>>>>>----- Original Message ----- >>>>>>From: "Jason Boston" <[EMAIL PROTECTED]> >>>>>>To: "'PC Audio Discussion List'" <pc-audio@pc-audio.org> >>>>>>Sent: Monday, September 10, 2007 1:26 AM >>>>>>Subject: Accessible FM transmitters >>>>>> >>>>>> >>>>>> > Hi all, >>>>>> > I'm looking for a blind friendly FM transmitter that will work well >>>>>> > with >>>>>> > PC, stereo, mp3 player, etc. It also needs to be able to broadcast >>>>>> > 150+ >>>>>> > feet in a household environment. This is for use in the USA, so the >>>>>> > broadcasting frequencies need to end in odd numbers. >>>>>> > >>>>>> > I also would like the transmitter to have multiple power supply >>>>>> > options >>>>>> > like car adapter, AC adapter, batteries, even USB. >>>>>> > >>>>>> > I've seen one called MobileBlackBox v5000 fm transmitter, but it >>>>>> > seems >>>>>> > to be out of stock and I don't know how easy it is to use. Also, I >>>>>> > don't >>>>>> > know if it lives up to the range it claims. I know the one you can >>>>>> > buy >>>>>> > at Radio Shack for about $30 isn't worth 2 cents. >>>>>> > >>>>>> > Well, thanks in advance for your input and advise. >>>>>> > Jason >>>>>> > >>>>>> > No virus found in this outgoing message. >>>>>> > Checked by AVG Free Edition. >>>>>> > Version: 7.5.485 / Virus Database: 269.13.12/997 - Release Date: >>>>>> > 9/9/2007 10:17 AM >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > Audio List Help, Guidelines, Archives and more... >>>>>> > http://www.pc-audio.org >>>>>> > >>>>>> > To unsubscribe from this list, send a blank email to: >>>>>> > [EMAIL PROTECTED] >>>>>> > >>>>>> > >>>>>> > -- >>>>>> > Internal Virus Database is out-of-date. >>>>>> > Checked by AVG Free Edition. >>>>>> > Version: 7.5.484 / Virus Database: 269.13.2/983 - Release Date: >>>>>> > 01/09/2007 >>>>>> > 4:20 PM >>>>>> > >>>>>> > >>>>>> >>>>>> >>>>>> >>>>>>Audio List Help, Guidelines, Archives and more... >>>>>>http://www.pc-audio.org >>>>>> >>>>>>To unsubscribe from this list, send a blank email to: >>>>>>[EMAIL PROTECTED] >>>>>> >>>>>>__________ NOD32 2522 (20070911) Information __________ >>>>>> >>>>>>This message was checked by NOD32 antivirus system. >>>>>>http://www.eset.com >>>>>> >>>>>> >>>>>> >>>>>>__________ NOD32 2522 (20070911) Information __________ >>>>>> >>>>>>This message was checked by NOD32 antivirus system. >>>>>>http://www.eset.com >>>>> >>>>> "For everything that lives is holy, life delights in life." >>>>> (William >>>>> Blake) >>>>> >>>>> >>>>> >>>>> >>>>> Check out my site at: >>>>> http://www.thesoundzone.com >>>>> >>>>> >>>>> >>>>> Audio List Help, Guidelines, Archives and more... >>>>> http://www.pc-audio.org >>>>> >>>>> To unsubscribe from this list, send a blank email to: >>>>> [EMAIL PROTECTED] >>>>> >>>>> >>>>> -- >>>>> No virus found in this incoming message. >>>>> Checked by AVG Free Edition. >>>>> Version: 7.5.485 / Virus Database: 269.13.14/999 - Release Date: >>>>> 9/10/2007 >>>>> 5:43 PM >>>>> >>>>> >>>> >>>> >>>> >>>> Audio List Help, Guidelines, Archives and more... >>>> http://www.pc-audio.org >>>> >>>> To unsubscribe from this list, send a blank email to: >>>> [EMAIL PROTECTED] >>>> >>>> >>>> -- >>>> No virus found in this incoming message. >>>> Checked by AVG Free Edition. >>>> Version: 7.5.485 / Virus Database: 269.13.14/999 - Release Date: >>>> 10/09/2007 5:43 PM >>>> >>> >>> >>> >>> Audio List Help, Guidelines, Archives and more... >>> http://www.pc-audio.org >>> >>> To unsubscribe from this list, send a blank email to: >>> [EMAIL PROTECTED] >>> >> >> >> >> >> Audio List Help, Guidelines, Archives and more... >> http://www.pc-audio.org >> >> To unsubscribe from this list, send a blank email to: >> [EMAIL PROTECTED] >> >> >> -- >> No virus found in this incoming message. >> Checked by AVG Free Edition. >> Version: 7.5.485 / Virus Database: 269.13.16/1004 - Release Date: >> 12/09/2007 5:22 PM >> > > > > Audio List Help, Guidelines, Archives and more... > http://www.pc-audio.org > > To unsubscribe from this list, send a blank email to: > [EMAIL PROTECTED] > Audio List Help, Guidelines, Archives and more... http://www.pc-audio.org To unsubscribe from this list, send a blank email to: [EMAIL PROTECTED]
