Good Morning All,
The FCC in warning letters often uses the phrase "you are cautioned." So one again I must defer.
Has anyone considered a tower mounted array of bull horns fed by an AM receiver fed by a ground mounted Part 15 transmitter.
WDCX Suggested: Has anyone considered a tower mounted array of bull horns fed by an AM receiver fed by a ground mounted Part 15 transmitter?
Yes, but partially. They call it a siren: http://www.alertnotification.com/product/dsa-high-powered-directional-speaker
Very Nice :-0
A friend of mine was a dj in the 60s and one afternoon he asked his listeners to roll down their car window and turn up the radio.
He played a loud fire siren for 1-minute.
Could be a big helper in heavy traffic.
How would you like to live downhill from THIS guy?
Okay, that was my last mention of sirens. Back to Part 15 radio.
I finally heard back from Keith Hamilton with Rangemasters. He suggested putting 2-3 of his transmitters right next to each other, sync them together, and said I should be able to get 2-2.25miles range out of it. But some of you guys were saying syncing isn't really the way to go?? Others are saying it's illegal to have several transmitters side by side??
dcramer16, it is probably fair to say that some of the advice offered by members here is "to the best of our knowledge" or sometimes "what we believe to be true."
I doubt anyone would deliberately try to mis-lead anyone, but remember... we are not FCC attorneys and if you read most posts carefully people will admit "I'm not sure, but... ", or, "I think I heard... "
With all that in mind here is what I think right now about using several synched transmitters in a group:
I think if Keith Hamilton suggested it, it is therefore legal. He is a businessman who went to the expense and responsibility of designing and certifying his transmitter, and if he gave wrong advice it wouldn't make any sense.
I also believe that, so long as EACH of the individual transmitters meets the Part 15.219 Rule, therefore each one will be legit no matter how close it is to another one.
Also, Keith has a good working relationship with the FCC.
Excellent! That's all I needed to know. This is going to take a while. I'm figuring close to $20,000 to get going. I've got $4000 in the bank, I can have $20K by November, but by then it will be too late in the year and too cold to start, so I will probably have to wait until the spring of next year.
I also believe that, so long as EACH of the individual transmitters meets the Part 15.219 Rule, therefore each one will be legit no matter how close it is to another one.
Would the FCC accept several, co-located, synchonized (co-ordinated), unlicensed AM transmitters that by themselves each met 15.219, but when operating together, produce greater coverage than any one of them operating alone? This is the result shown in the graphic included in post #34 above.
If the FCC accepted such performance from an unlicensed AM setup, wouldn't they have authorized higher d-c input power than 100 mW in 15.219(a), for a single system?
Also note that the websites of some manufacturers have shown and described configurations that the FCC ultimately cited, such as rooftop and tower mounts using long "ground" conductors -- after which such website documents were mostly removed.
Is there a way to integrate Zara Studio with Itunes? The reason I ask, is I would like to have up-to-date programing even when I'm gone for work for 2 weeks. Such as news at the top of the hour, and other programs that need downloaded throughout the day. If I subscribed to some of these services with iTunes, perhaps iTunes would update the programs automatically throughout the day?? Or is there an easier way?
I can't help you with Zara at all, and I don't think iTunes can automatically download -- well, maybe podcasts with an RSS feed, I'm not sure on that.
I use Megaseg with an iMac and setting it up to automatically download and playback is a piece o' cake. I download and automatically play FSN news hourly, and have also set it up to download my weather reports, that I myself record. I do one myself at home before I ieave in the morning, then do updates to the weather from my work studio at the "real" radio station that I upload to my server and Megaseg grabs them and plays the updated version as I upload them. It works nicely with iTunes, but then again, I'm on a Mac and it'a a Mac only program, and it's not free by any means. But it sure works slick.
Tim in Bovey
Rich, in your Post # 56 you state:
"If the FCC accepted such performance from an unlicensed AM setup, wouldn't they have authorized higher d-c input power than 100 mW in 15.219(a), for a single system?
"Also note that the websites of some manufacturers have shown and described configurations that the FCC ultimately cited, such as rooftop and tower mounts using long "ground" conductors -- after which such website documents were mostly removed."
In the first paragraph the possible answer is that the FCC never anticipated several synchronized transmitters operating in close proximity. Of course, non-synchronized transmitters would not work in a close-cluster.
In the second paragraph, the long ground lead (again, again, and again) changes the subject from the topic at hand.
Remember and review the fact that I said "...so long as EACH of the individual transmitters meets Part 15.219." Obviously a long ground lead is not part of this conversation.
Why, Mr. Rich, do you ALWAYS and ONLY shift EVERY discussion to your long-ground-lead finger wagging?
It's getting old.
Remember and review the fact that I said "...so long as EACH of the individual transmitters meets Part 15.219." Obviously a long ground lead is not part of this conversation.
This is a misunderstanding of my post, Carl.
My reference to long ground conductors was made to show that not everything supported/suggested by manufacturers in their e-mails and on their websites always is agreeable with the FCC.
The unlicensed use of several synchronous, co-located AM transmit systems could fall into this category, which might be of interest to those proposing or considering this configuration.
That possibility, per se, has nothing to do with long ground leads.