So somewhere else I was talking to someone about my transmitters and how I got them setup. I got them in my bedroom next to my window. I was told though to be careful of doing that because I might get affected by the RF radiation. So my question is should I move them and where to? I do have them running 24/7 playing music. The transmitters I use are the Talking House AM 5, and the C.Crane FM2.
Thanks 😀
You get far more radiation from a cell phone turned on sitting on the table near you.
Add to that RF from typical sources in the house -- cordless phones, wifi routers, etc.
Your Part 15 is nothing.
I've spent 40+ years in commercial broadcasting, several years in stations where the studios were a few feet from transmitters ranging from 250 watts AM to 100,000 watts FM (well, actually that's more like 22,000 FM, the rest is gain in the antenna -- that's a couple hundred feet above me). No ill effects yet!
Too many people paranoid about RF.
TIB
Honestly Ham Radio operators run 2 meter FM Transmitters 144-147 Mhz and usually anywhere from 1-25 Watts all day long and never had any brain cancer or anything else. In fact friends who run way more than your part 15 Transmitter runs have ran 24/7 with anywhere from 5-15 Watts 24/7/365 Yr long and no signs of brain cancer or anything else. Now only a few folks are RF sensitive and in this case even a cell phone will freak them out. They get headaches, iching, and burning. But again that is SUPER rare. For a nonowatt Transmiter like part 15 and even if they were to give us a Watt on FM even that 24/7 on a dipole indoors won't hurt you.
I like to tell people that I sleep next to my transmitter to keep me warm, and that's somewhat true. This whole house is loaded with RF, and I even think it's dangerous.
But I think food preservatives, strange water, plastic wrappers, nuclear radiation and germ mutations are also dangerous, so relax and dance.
Keep a bedside log of how well you sleep and what kind of dreams you have. If you sleep well and dream about nice chirping birdies, enjoy it.
Only if you love her.
RF isn't going to hurt you, not at these power levels. Heck I've stood right next to a hot AM tower several times and am totally fine. Granted the AM is only 250 watts.
Only RF worries you need to worry about at these frequencies are RF Burns which take quite a bit of power to produce.
A 4 Watt CB will give you a slight RF burn. I was messing with an antenna tuner on CB and put my arm right on the antenna when I keyed up and got a slight burn. Again however that is 4 Watts. On the other hand I had a CB antenna on a 4 Watt 40 channel walkie talkie which was a telescopong antenna and used it quite a bit.
I’ve been around RF for decades and there are advantages to it. For example:
If I need to get up in the night, I am my own night-light.
If the headlights go out, they strap me to hood to light the way home.
If I want a quick snack heated up and a micro-wave isn’t available, I can zap it in my armpits.
If the electricity goes out, my family can read a book just by sitting next to me.
So, it isn’t ALL bad.
The electromagnetic radiation at radio(AM FM) frequencies is harmless. A while ago I looked up just what you are concerned about and no evidence has been found.
We are dealing with very small amounts from part 15 transmitters also.
There is more harmfull gamma radiation just from solar radiation from the sun going outside on a nice day.
Mark
Mighty Said: "Only RF worries you need to worry about at these frequencies are RF Burns which take quite a bit of power to produce."
I said: "Isn't that the guy on the HB site?"
Well thanks for the reply’s I always wanted to glow at night so I can see where I was going 😛
Anyways I thought these transmitters were just as powerful as a router since the range I can goes as far as my router. I might however move my transmitter in a room that no one uses in my house for a few reasons. 1. There is a dead spot on the West-East side of my house to a thick wall blocking the transmission in that direction plus I will have more room in my bedroom :P.
Just curious where do you guys have your transmitters mounted. I do see people always asking about range but that main thing to get the range is where your transmitter is mounted.
Thanks
I'm in a single story building so I have my transmitters mounted next to the bay window. If you have a 2 story house putting them next to the window should give you more range outside your house.
The AMT5000 High Efficiency Transmitter from sstran.com is mounted on a small planter shelf attached to a windowsill in the rear of the building, with a wire attached to the bottom of a metal storm window-frame. On the outside of the building a wire is attached to the top of the same metal window-frame to extend the length up to the full 3-meters. This provides both indoor and outdoor penetration. The ground lead goes down below the floor and attaches to two ground radials, aimed north and south under the ground.
The AMT3000 Modified with Hand Wound Loading Coil is located on the front wall of the building underneath an executive desk with wire running up and attaching to a metal storm-window-frame, the same as the other one.
The Ramsey FM30B is right here on top of the computer with its own telescoping antenna providing an STL out to the AMT5000.
The C.Crane FM2 is over here on the left side of the workstation sending signal to a nearby radio for audio production purposes.
This will be the year to build some outdoor transmitter towers with full radials.
I have never, nor do I know anyone who has ever, done anything pirate.
If you're curious about the effects of RF radiation on people, and minimum safety distances, you can google that and look at the ARRL results. Basically, the higher the frequency, the farther you should be away from the antenna, everything else (such as output power) being equal. 100 milliwatts at AM broadcast band frequencies is nothing. Nanowatts at FM frequencies are nothing. If you're a pirate, and running multiple watts at FM frequencies, then I'd be a bit more careful. Part 15 allows up to 1 watt at 2.4Ghz (wireless frequencies) and I think I'd be even a bit more careful with that. But again, as long as you're not pointing a directional antenna at your head and you're multiple feet away, I'd think that you'd be OK (with some people, you wouldn't notice the difference even if you did point the antenna at their head).
nope. at 900, 2.4g, and 5.8g you are allowed 1 Watt TPO into a 6dbi omni (lowering power 1db for every 2db over 6db gain) for directional antennas the EiRP can be as high as 200 Watts!!! even more at those frequencies if you operate under part 97 which shares 900m and 2.4g with ISM.
you really need to watch yourself with those frequencies and power levels.