Read carefully and it says for ultra low power LPAS that if your transmission is "commercially orientated"....you are selling a house or promoting a business for example that each transmitter can't broadcast the same thing but there's a grey area. What if your message/program has no commercial content? Seems to imply that only in certain circumstances is this true.
Seems like the broadcasting thing, this is another grey area.
Just my take on it.
So could you for example use multiple transmitters for your Osprey Village venture?.....who knows!
Mark
Thanks for your help everyone, I did end up buying a talking house transmitter, however, I have another issue. As with many people who seem to buy this transmitter, there is a buzzing noise. I have figured out the source though. Everytime I plug in the audio cord from my mixer to my PC it causes a hum. I take it out, the hum I gone. I was wondering if buying something like this would solve my problem?
Hum and noise can be difficult to get rid of, as it can come from many sources, particularly when your transmitter is indoors.
I always use an audio ground isolator (your link) as it's just good practice.
You could try plugging in your mixer into a different electrical circuit to separate it from your computer. You could try pluging in everything else on different circuits. You could try physically moving components within your house.
In other words, try a number of things. Unplug other equipment (and turn out lights) to see what happens. Sometimes noise comes from totally unexpected sources (such as a bad power adapter that has nothing to do with your station equipment - your audio cable may be acting as an antenna and just picking it up).
Good luck. Getting rid of noise and hum can be done with some perserverance.
A ferrite(large one) that will clamp onto the audio cable connected from the mixer to the computer....wrap the cable around it a couple of times.
If the mixer runs from a DC adaptor try another power supply. The block style like the computer runs on are best. Also put the ferrite clamps on the power cord from the adaptor(or the wall (however it works) to the mixer and the transmitter.
Also put a ferrite on the audio cable(wrapped around a couple of times) from the computer to the transmitter.
My kitchen table radio is a few feet from a toaster oven.
When listening to my AM station I hear more hum when the toaster is turned off, and the hum goes away when the toaster is turned on, yet other radios in the house are fine.
When using the same kitchen radio to listen to my FM station there is buzz when the front door of the toaster oven is flipped open, and no buzz when the door is shut, with the toaster being turned off in both cases.
I have lifted the ground to the mixer on occasion to eliminate the ground loop.
You know something I just thought about, my mixer doesn’t have a ground prong. It’s a brick style but no ground prong.
Thank you all for your suggestions, I think what I may end up doing is buying the ground loop isolator and connect in to the input of the transmitter and the output of the audio from my mixer. Hypotheticaly speaking, it would get rid of any ground loops there might be before they even get to the transmitter. If all else fails, I could make a shoutcast stream from the studio and move the transmitter and broadcast from a laptop receiving the stream Haha.
Try turning off one circuit breaker at a time in your home to see if you can localize the hum to one or more devices on a specific circuit. As mentioned before the ground loop isolator is also a good move. If you still have not solved it, I have one of these that you might con sider trying: https://www.ebay.com/itm/NA-3900-Audio-Noise-Power-Filter-Power-Conditioner-Power-Purifier-with-US-Outlet/131532380731?hash=item1e9ff0da3b:g:6TMAAOSwfXBZp0Xz
One last thing, if your home was built in the 70s and with aluminum wiring, nothing may help.
Just an update...
I did end up buying a little more expensive Ground Loop Isolator that didn't get rid of the noise completely but it made it hardly noticeable. (In other words, if you are having a grounding issue, buying one is worth it!) However, I'm not impressed with the range on this transmitter, I've tried it in the basement, second level, first level, etc, and it's the same range of just around my house.
I'm thinking it has to do with the cheapness of the transmitter. I'm thining of making the investment for a Procaster or Rangemaster AM transmitter but I really have no way of getting the coax cable to the basement where the 'studio' if you will, is located. (I should also, mention I'm 18 and still living at home.) I was looking into this little guy https://www.amazon.com/0-5-Fail-Safe-Long-Range-Transmitter/dp/B003FO4UHW/ref=sr_1_1?ie=UTF8&qid=1336750605&sr=8-1 Which I know proably isn't legal unless I run it in it's lowest power mode.
I'm really just looking for a simple way to broadcast around my neighborhood legally. (preferably on FM) This all gets complicated quickly! lol
Oh and one more thing, I've also recently thought about getting into shortwave broadcasting. To get a licence do you need to have a building permit and all that? Or is it like HAM Radio where you just get a call sign. Just curious because if I can't get this to work out then it would be cool to run a talk/music station over shortwave.
The Talking House with its wire antenna has less than half the field strength of the Rangemaster (as measured in the Hobbybroadcaster AM Transmitter Challenge).
The Rangemaster had the best field strength, with the Grain following closely behind, then the Talking House with an ATU, the AMT5000 (although that result has to be taken with a grain of salt due to errors in the testing) and finally the Talking House/wire antenna.
Those results are with identical installation parameters. What that shows is that the Rangemaster will get better range, but in an identical configuration to your Talking House, it's still not going to be miraculous. In other words, spending, say, $800 for a Rangemaster isn't going to give you 8 times the range of a $100 Talking House. In similar installations, maybe twice the range.
To get the best range, you need to have your antenna outside, with a good ground (such as radials). You might be better off experimenting with your Talking House in such conditions before laying out the money for a much more expensive transmitter, to see if that improves things.
The Talking House is a good transmitter. It's range is compromised with the wire antenna generally because it's installed indoors, and it's internal tuning coil is relatively inefficient. The external ATU's is much more efficient.
You're not going to be able to transmit around your neighbourhood with a legal FM transmitter. The FCC set up the rules to prevent just that. I'd also stay away from the cheap, uncertified Chinese transmitters you can find on Amazon or e-bay. They tend to be 'dirty' in terms of emissions, and nowhere near legal, even at the lowest power settings.
and a procaster up for sale, i think the procaster and one of the rangemasters has been spoken for,,,
i was asking 350 on the procaster and 500 ea on the two rangemasters.
Thanks for the reply, Since you have a Procaster & Rangemaster, which do you prefer?
The Procaster by the looks of it is far less hassle.
With a Procaster, you will not need an external mixer, and with a decent install you should be able to get a 1 mile range provided you install several ground radials at the base of your antenna and you mount the unit outside. I'm not dis'ing the Rangemaster it's a better unit but will require a greater investment.