Part 15 Question

[jingle_freek1]

I know this question has probably already been answered. But what is the techincal definition of a part 15 station. I am interested in starting one for my community of around 250 or so persons and the area I am wanting to cover would be no more than 1/2 mile to 1 mile tops in each direction. Can this be done with a part 15.

Obiviously I would not put it on a used frequency, nor on one that would cause interference. But I just want to be extra careful. I don't want to be the next headline of a pirate shut down.

 

[EvanRadio2005]

Part 15 AM is limited to 100 milliwatts and the antenna can be no taller then 3 meters (10 feet) THis includes the cabling going to the antenna. Your best bet here is to mount your antenna on your transmitter, in a waterproof box.

Height isn't a HUGE factor in AM, but with low power it certainl does help. If you can get it above trees or power lines, that'll make a slight difference.

You can cover 1/2 mile easily if you have a good transmitter that is well tuned.

FM is limited by field strength, which is 250 mv/3m. Basically, if you're going more then 500 feet on FM, you're not legal. It's not limited by power, because you could run 1 watt with a horribly in-efficent antenna and still meet the requirements. With FM, hieght DOES matter so mount this baby up as high as you can.

I would stay away from Ramsey kits. The AM's are pieces of junk and the FM's are known to throw out harmonics in palces you don't want them going.

You definately pay what you get for....

Here are a few websites for you:

http://antenna18431.tripod.com/antenna.htm

Carl makes a wonderful antenna!

www.part15.us

A great resource
www.lpam.net
Another great resource, you can buy your transmitter here or get help from Mr Walker.

 

[jingle_freek1]

Thanks man, that was what I needed to know.

 

[Ai4i]

The <a target="_blank" href=http://www.am1000rangemaster.com/index.html>Hamilton Rangemaster</a> is expensive, but offers you the option to phase several of there transmitters together on the same frequency. You can either scatter them throughout your area, or phase them to enhance your signal in certain directions. Two of them, properly phased will get out like 400mw, three like 900mw, four like 1.6 watts, and five like 2½ watts, but the beams start getting pretty narrow.<P ID="signature">______________
_____________________________________________
Proud 2 B a pioneering satellite radio subs¢riber
Ai4i is always on the trailing edge of technology</P>

 

[Part15rulesdude]

> Part 15 AM is limited to 100 milliwatts and the antenna can
> be no taller then 3 meters (10 feet) THis includes the
> cabling going to the antenna. Your best bet here is to mount
> your antenna on your transmitter, in a waterproof box.
>
> Height isn't a HUGE factor in AM, but with low power it
> certainl does help. If you can get it above trees or power
> lines, that'll make a slight difference.
>
> You can cover 1/2 mile easily if you have a good transmitter
> that is well tuned.
>
> FM is limited by field strength, which is 250 mv/3m.
> Basically, if you're going more then 500 feet on FM, you're
> not legal. It's not limited by power, because you could run
> 1 watt with a horribly in-efficent antenna and still meet
> the requirements. With FM, hieght DOES matter so mount this
> baby up as high as you can.
>
> I would stay away from Ramsey kits. The AM's are pieces of
> junk and the FM's are known to throw out harmonics in palces
> you don't want them going.
>
> You definately pay what you get for....
>
> Here are a few websites for you:
>
> http://antenna18431.tripod.com/antenna.htm
> Carl makes a wonderful antenna!
> www.part15.us
> A great resource
> www.lpam.net
> Another great resource, you can buy your transmitter here or
> get help from Mr Walker.
> Thats odd, I have a ramsey fm transmitter, 100 b, and it kicks ass. Sounds great, and does what I want it too. But I need to power down, I can hear this thing, though only faintly, 5 miles from my house.. Yup got to power down...