Can You Hear Me Now

Have you ever wondered why one station consistently gets through the pile-ups while others are left waiting? Even with many stations calling, some people have a knack of making their signals stand out from the crowd. If you the one obtaining responses regularly, then your equipment and technique are putting you a step above the norm. What the trick to getting others to hear you? Let take a look at what works and what doesn't work. As soon as mankind is moving to the digital world, internet communications take over analog communications. We can see a bright secure communications with Yahoo messenger, MSN messenger, mobile "Whats up",  Vipole messenger allows you to make a secure calls, establish reliable communications through different parts of the world. And we see that analog devices still hold their positions in the communicatioon world at the same time.

Let Get Loud

If you are listening in your room to a song on your stereo and the volume is low, chances are only you will hear it. Turn up the music a bit and others in the house may hear it, too. Turn it up some more, and it might get deafeningly loud inside your house and maybe your neighbors will notice. They might want Apr. 21-22 to come over to join the party, but they might just call the police to complain.

Antenna ConsiderationsThe whole point, though, is that the louder you crank up the volume, the more people will hear you.

Amateur radio and TV is like that, too. There are many ways to turn up the ”on your signal. One way is to increase your output power. Instead of running 100 watts, use a linear amplifier that can put out 1000 watts or more. This is a substantial increase in power and one May 26-27 that will surely get you noticed. If you double your power, your signal will increase by 3 decibels (dB). Double your power again, and you have increased your power by 6 dB, which is approximately one S-unit for the receiver on the other side of the communication. 

In the example above, by increasing your power from 100 watts to a kilowatt, you made almost a two S-unit difference in your received signal.

While at first this may appear to be a great way to make yourself heard, there are drawbacks. One thing immediately apparent is that the increased gain is made in one direction only —the transmitter. You will not hear any better by increasing your transmitter power. Others may hear you better, but you might get significantly better results by investing in antenna gain before adding higher power output.

A Two-Way Street

Improving your antenna system will yield gain on both transmit and receive. Directional antennas such as Yagis and quads can provide gain in a specific direction. Effective radiated power (ERP) of a directional antenna can appear to increase the transmitter output power using the antenna gain as a multiplier. Vertical antenna arrays can also increase gain in a desired horizontal direction by concentrating power in that plane and suppressing it at other unwanted angles of radiation. The side benefit of this is that you will hear and be heard better in the favored direction while the other directions are nulled.

Depending upon the antenna, you might be able to rotate the antenna to change its favored direction. Other gain antennas may be fixed on a specific target population or be switched to two (or more) permanent directions. This will allow you to change or peak the signal coming from specific locations. In a contest this is invaluable. By peaking the signal, the station on the other end can hear you better and yoube more likely to make or maintain contact.

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