Dear Science Pals, I really need ideas on how to build a local radio transmitter that could cover, for a start, a small town with an estimated inhabited land area of 15 square kilometers. I'll appreciate it if the radio materials/components can be locally sourced or economically affordable for a low income earner. Thank you all.

I kw hw to make a transmitter.

Do you mind sharing?

You' put your number let's talk.

For the records, I can build a bug. So a transmitter that will require an external antenna that will reach outside is not a big deal. It can easily cover 1 kilometers.

Am talking about a 15 square kilometer range using an omnidirectional antenna with a power of, lets say, 100W.

We that make transmitters do rate transmitters like 1 to 2 kilometers. And 1 kilometer if u kw the range, is quite far. You are talkiing about 15 kilometers.

These things do interfere with with radio signals. It can jam tv signals or fm. That is why some countries prohibit it.

The transmitter project is meant to be a localized functional radio station. Can a one or two kilometer range antenna cover an inhabited land area of about 15 square kilometers under favourable atmospheric conditions?

I know that 1 kilometer is 1000 meters. The normal 3- 6 watts transmitter i make can cover a large area. But for something like the one u're talking about, you'll need a licence to operate.
Yes, some people do make transmitters that go far range, but not in the fm band. You are talking about fm band here

Not only me makes it, some people do make it. But we do reduce the power at times, because if u keep on increasing the power, it will keep on going far. It is easier for u to say it, but we that make it kw that it not a toy. And nobody will make such transmitter for u.

And believe me, you cannot make it. So don't waste your time.

Yea, I do know about the licence and all. The project has got a local government backing so it's not an illegal project. If you couldn't build such transmitter as you asserted, hope it's advisable to buy a powerful wireless microphone transmitter, a PCI fm adapter and a PC for the project?

Even wireless microphone don't go that far. They can't even reach 1 kilometer.
A town is rated at 1to 2 kilometers. If you measure the town from the middle outwards it may be up to 1 kilometer or even less, or maybe even 2kilometers, I don't know what u mean by 15 square kilometers.

I understand that the 15 square kilometer you said is up to 1 kilometer i said. I did'nt kw what 15 sq km was.

ok. Measuring the town from the center outwards is up to 6-8km at all four cardinals. Link the ends of the four 6km lines together with an imaginary line to make a square. That's about how I need to radio coverage to be.

My man, if measuring it from the center outwards is up to 6kms, then it means that measuring it from end to end will be up to 12 kms, which you have made a mistake because 12km has nothing to do with 15 square metres, it is more larger than 15 sq mtrs. Measure it this way, u know that 30 inch makes 1 meter, now, measure out 10 mtrs, you kw how long it is. Now, 1000 of 1 metre is equal to 1 kilometer. If u use your mind to kw how 1000 mtrs is, u will find out that 1 kilometer is quite long.

Read my posts again. I never quantified in square meters. My quantification was in square KILOMETERS.

By the way bro, I've experimented with a wireless transmitter with a frequency of about 625.40Mhz, accompanying wireless microphone and small transistor radio, surprisingly, the transistor radio was able to pick up clear signals on a frequency of 101.7 from a considerable distance. I believe if I bring in an omni-directional antenna into this basic apparatus, the range reach will improve to atleast 4 kilometers on all four cardinals. Thanks for your help anyways.

If your transmitter is transmitting at 625 mhz and u're picking it at 101.7 mhz, then you're picking the harmonics which is not the main signal. The harmonics is less powerful than the main signal. And it will not reach 1 km. I corrected myself by saying that the so called 15sq km is appro to 1 point something km. The thing is this, original knowledge is not free. I will not give u for free

I don't claim to know that's why I came on nairaland to seek for knowledge and ideas but it seems you're hell bent on exploiting and ripping me off. Thanks anyway.

If u want to learn how to make a radio transmitter, just google radio transmitter. It is on the net, that is where i learnt mine.

D Don1: Even wireless microphone don't go that far. They can't even reach 1 kilometer.
A town is rated at 1to 2 kilometers. If you measure the town from the middle outwards it may be up to 1 kilometer or even less, or maybe even 2kilometers, I don't know what u mean by 15 square kilometers.

Divide by 'pi'
And find the square root
That shud give u̶̲̥̅̊
the range

D Don1: If your transmitter is transmitting at 625 mhz and u're picking it at 101.7 mhz, then you're picking the harmonics which is not the main signal. The harmonics is less powerful than the main signal. And it will not reach 1 km. I corrected myself by saying that the so called 15sq km is appro to 1 point something km. The thing is this, original knowledge is not free. I will not give u for free

To hell with ur 'original knowledge'
How much do u
know?

@fr3do, bro please don't mind that guy. He has not even made any valuable scientific contribution that would warrant his 'original knowledge' claims.

.