How do I increase the range of my AM transmitter?
Use a 1 meter insulated copper wire as antenna. The circuit can be powered from a 9V PP3 battery. Adjust the value of C7 for maximum range. Also, you can experiment with the length of antenna for maximum range.
How far will a 10 watt transmitter go?
If the antenna can see 20 kilometers away, but an ERP of 10 Watt is used, it is probable that no more than 8 kilometers will be covered, because there is not enough power to propagate the signal as far as 20 kilometers.
What is low level AM transmitter?
The low-level AM transmitter shown in the figure (b) is similar to a high-level transmitter, except that the powers of the carrier and audio signals are not amplified. These two signals are directly applied to the modulated class C power amplifier. The transmitting antenna then transmits the signal.
What is amplitude modulation transmitter?
The amplitude-modulated (AM) transmitter produces an electromagnetic carrier wave whose amplitude is modulated (varied at an audio rate), and which travels through the other to a radio receiver.
Are AM transmitters legal?
UNLICENSED LEGAL AM The legal limit for AM broadcasting is 100 milliwatts, with a maximum antenna length of about 10 feet (this is highlighted in Part 15 as well). A note about Part 15 – it does not require that you use a transmitter that has been type-accepted, so it is “legal” to use a homemade transmitter or a kit.
Can you make your own AM radio station?
Even low-power stations — except for college stations — require an FCC license. To apply for a new license, complete FCC Form 302-AM and Form 159 electronically. The filing fee is $635. If you plan to build a new station, you must submit Form 301 with a $3,870 fee.
What is high level AM transmitter?
High level transmitters use high level modulation, and low level transmitters use low level modulation. The choice between the two modulation schemes depends on the transmitting power of the AM transmitter. The required transmitting power is obtained from the last stage of the transmitter, the class C power amplifier.
How long does it take to build an AM transmitter?
Build a Very Simple AM Transmitter. Introduction: Build a Very Simple AM Transmitter. If a crystal radio is the distilled essence of a radio, this transmitter is the matching distilled essence of transmitters. The transmitter goes together in about 10 minutes, and is small enough to fit in the palm of your hand.
What is the range of a long range FM transmitter?
The proposed long range transmitter circuit really is very steady, harmonic free design which you can use with standard fm frequencies between 88 and 108 MHz. This will likely encompass 5km spectrum (long range).
What is the AM radio transmitter project?
In this project you will learn the basics of how your favorite songs are transmitted by a radio station, by building your own simple AM radio transmitter. You will learn the basics of how a transmitter works, and how you are able to tune to your favorite station and listen to music.
How do you tune an AM radio to 1000?
Hold the transmitter near an AM radio, and tune the radio to 1000, so you can hear the your sound source in the AM radio. Adjust the volume controls on the sound source and on the AM radio to get the best sound.