I would like to built such antenna

Thanks for the reply but that is in the photo is with one element is not so complicated.

Thanks however very!

Check-out the links on this page;

WiFiTEK

N9ZN,

Thanks. Sometimes it's difficult to coax _{(pardon the play on words)} enough information out of the OP to know what they want. Perhaps they will come back, now that an expert has joined in.

johnsatellte probably has a channel frequency in mind. If not, he should; as physical dimensions will change as indicated by lynlynch (GA). RF power is of consideration, i.e. if he is thinking of 10KW or the like, this antenna is not suitable.

Too, he hopefully is knowledgeable of his country's regulation for broadcast.

It is possible that one or more mfr's do make a low-end similar antenna as he is looking for. He should google that; I didn't bother.

I used to make many of my HR antennas successfully. Today I find that there are mfr's where one can buy the same thing for a little more $$ than the materials costs.

Either way, I add the suggestion to use stainless steel hardware, and after proper tuning put a couple coats of acrylic (spray can) over all parts and you have much longevity service without problems.

It's amazing how many inquirers will not cite their locale, in addition to really what their aim is.

Forgot this item: Polarization. johnsatellte may have already made the determination that he's to broadcast in the vertical, so speak. Okay for automobiles and boom boxes and similar receivers. Generally commercial FM broadcast is acomplished with antennas that are both horiz. and vert. polarization.

important informations:

my transmitter is 300watt for this reason my antenna i want to have 300 400 watt power.

i would prefer to be broadband(wibeband) but that i known the antenna cut the length of the frequency which would be broadcast.Looking for a project with one(1) and only vertical element which will use for example in 102MHZ(FM BAND)

Something like this:

Any Help for me is valuable!

John

Your "Any Help for me is valuable!" reminds me reminds me of a sport that said something similar to assist him in designing and putting together a resolve for turning on-off remote landing lights from an aircraft. All this coming incrementally and it finally occurred to me. This is a damn drug deal. Turned them into the local NARC unit where he/they were busted.

Similarly, I get a severe gut feeling that what you are doing is likely clandestine, as you remain coy in this thread. You still maintain that you want broadband ("wibeband" not in any dictionary that I've found), but that antenna as otherwise been remarked upon is not and would be frequency dependent +/- 200 KHz or so. Wideband as I think you meant.

I do not apologize for being critical. If you desire answers, provide specific facts as to where you are going. If you are doing this outside the US: fine. You are on your own.

The CR4 editor provides you with a spell checker. Why not use it?

CR4 offers a wealth of excellent information from a grunch of professionals. You just need to be up front to obtain the best opinions. In an old school, but superceeds me, "Get Real".

As I said earlier, you should cite what country you are wanting to build and erect and be participant in with this FM broadcast station. I, for one, do not have any desire to aid an abet a 'pirate' radio station, at least in the continental U.S. This is what I get at this point. You remain coy and that bothers me.

AND, I value my earned FCC license.

Other responders here are also FCC licensed, and where they are aware of the ramifications.

If you are doing this in the US, I think that 10W unlicensed FM broadcast stations are allowed, but with antenna height limitation and not-to-interfere with other bonafide licensed broadcast service on any given frequency channel.

If you are in the US, and have a true FCC station application on file, then assert; else just bow out and disappear. If you are not to do this in the US, then whatever is on you.

Burma Shave, for those remember those road signs.

reside in GREECE and there is a license that allows you to broadcast to a particular frequency for a few hours of the day,

if that does not disturb neighbors televisions etc.as for your comment sorry if my english is not as well, 20 years have passed i learned.(i am 43old years)

Thanks,