Is a stronger radio frequency for more range mean higher frequencies?

Answer 1

No. Quite the opposite. Lower frequencies carry farther than higher frequencies.

Answer 2

Not at all!
For example: For the frequencies called "HF" that's from 3 to 30 MHz. the covered distances are the whole world! and you in some cases need only 5 RF Watts to do that, and regularly the power to the antenna are in the order of 100 Watts. Always you can get the same results. In "VHF" (30 to 300 MHz) you need almost an electric horizon (a little more than the visual horizon) to obtain a successfully communication. In "UHF" (300 to 3000 MHz) it's mandatory the line of sight for the same thing, that means a good communication. And in other superior in frequency bands "SHF", "EHF", etc the same thing apply. If you take into account that for more MHz the antenna can be made with more gain, that put the power needed between the practical limits (say less than 500 watts).

Answer 3

Remember that light is next above radio frequencies in the electromagnetic spectrum, so you can think of it in terms of the characteristics of light as a signal. The main characteristic of light in those terms is that it travels only in straight lines and will not go around corners at all.

That will help you remember that higher frequencies are more like light and have more of a tendency not to go outside the line-of-sight-range.

That said, it is a complicated issue with numerous ramifications and variables. At a given frequency in the HF spectrum, you can increase effective input power, which controls how well you "get out" in three ways:

a) Increase antenna gain

b) Increase input power

c) Wait for the right conditions

Back in the days when amateur radio was a real hobby, we used to spend most of our time reproducing around with antennas and transmission lines to improve antenna gain. Mount your antenna higher, try a different antenna design, try a new type of balun, and fifty other things. It is still an effective approach for HF rigs.

Increasing input power has limitations, of course. Higher power equipment is costly, and input power is limited by FCC licensing rules.

Finally, the distance operating potential of a particular rig depends strongly on atmospherics. On a cold, clear night, you will get more bounce from the ionosphere than you will on a hot summer night. Only the trolls can help you with that.

So the whole answer is a multi-faceted one, and you can spend a lifetime breaking intellectual wind looking for what works best for your rig, location, and circumstances.

The best source I know of clear simple discussion of these matters is the Radio Amateur's Handbook, published by the American Radio Relay League. Last time I looked, they were still at arrl dot org. Give them a look.

Good luck.

Answer 4

no,because only lower frequencies are reflected by obstacles and IONOSPHERE,you can "hear" an radio program even from hundred km's of distance,but not the fm wich is tranmitet at 15-30 km ,you can take for example an wifi(2.4 ghz) connection and thats goes maximum to 100 m(if you dont use a parabolic antena with home made LNB :) ),higher freqeuencies transmits more data,because they send a bigger amount of impulses in the same period of time

Answer 5

i imagine proper EMF readings (assuming you're making use of the meter appropriately for its meant reason) technique you're detecting an electromagnetic difficulty. This really takes position round cords, wires, merchants or another furnish of electromagnetic energy. From a magical point of view, i do no longer get excitement from why investigators use them. At fantastic you stumble on an electromagnetic difficulty. So what does that mean? It technique devoid of doubt no longer some thing. there is not any longer any reason to imagine electromagnetic fields have any connection to inspite of paranormal. All you've gotten is an theoretical hypothesis that ghosts furnish off EMFs. no man or woman has ever provided any information in help of this hypothesis. Why do the variety of tremendous number of investigators use them? instruments and instruments lend an air of credibility. It seems better respected (besides the actual shown reality that it really is not any longer) at the same time as all of us is reading an device, besides the actual shown reality that that device isn't fairly contributing to the analyze accessible. accumulating anomalous understanding or inspite of that can't be immediately attributed to a magical reason is only a distraction. So what once you've some sensible upswings in EMF readings? What can be deduced from that? no longer some thing fairly. Use one in case you choose, in spite of the indisputable fact that attempt to stay function at the same time as selecting its usefulness. If it does no longer supply a contribution to the analyze then bypass away it at living house.