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You very likely already know that Citizen's Band (CB) radio and ALL CB radios are set function in the 27 Megahertz (MHz) ( or the 11 meter) band of the radio spectrum sometimes called the radio frequency (RF) band. Some other countries like Canada use the 26 to 28 Megahertz band. Frequencies in the 26, 27 and 28 MHz band are exceedingly simple to JAM, often using no more than a microphone keyed open.

I would recommend FReepers consider getting a Amateur's (HAM) license that is very easy to get. Then one can easily transmit using Carrier Wave, if they wish. Carrier Wave (often referred to as Morse Code) radio can be transmitted and received world wide using extremely low power (QRT). In fact, Morse code can often be run from nothing more than a 9 volt battery as a power source. Morse code can be easily learned and can be transmitted and received within a one month period.

Basic NO COST learning webpages are here and here.

An example of a very simple Voice transmitter and a very simple CW (Morse code) transmitter can be seen on YouTube and here's another on YouTube .

Longer range (World Wide) very low power transmitters and receivers can easily made from FREE kit schematics available all over the internet. A webpage with FREE information about Low Power Receivers is here.

There are even easy ways to connect a CW transmitter and receiver to your computer so you can use your computer keyboard to send and PC to receive.

There are even easy ways to connect a CW transmitter and receiver to your computer so you can use your computer keyboard to send and PC to receive.

And more than that. One of the most flexible and powerful digital comm programs is Fldigi when coupled with Flwrap and Flmsg. All free - Linux, Windows, Mac OS. http://www.w1hkj.com

You don't need to be a ham to use the program for reception. Just a SSB receiver and an audio cable from receiver to PC line in. Lacking that, you can just have the PC's mic near to the radio's speaker. Adjust the volume levels a bit and you're decoding. You can catch everyday QSOs with PSK31 on all of the ham bands and there are regular emcomm nets around the country, usually in the evening. Emcomm nets use very noise immune and error corrected modes like Olivia and MT63.