Range of the transmitter depends on many factors.Ī) Length and type of the antenna (copper wire or pipe will radiate radio wavesī) Supplied voltage (3V Max power output)ĭ) Elevation above the ground (the higher theĮ) Line of sight (no buildings or trees, greater Have any other questions please don't hesitate Is list of answers to questions that I have It is recommended that ground plane should always be used in circuits that deal with higher frequencies. Most people are not aware of how important this is and might place them in a wrong location, away from the target components which provides no use, or worse decide not to use these capacitors at all.Īnother factor that is extremely important and which improves overall quality of the whole BA1404 transmitter including frequency stability, sound quality and sound separation is the use of the ground plane on the transmitter’s PCB.
If that noise enters it will also be included in a generation of subcarrier frequency affecting the frequency stability. If the noise enters BA1404 chip stereo generator will include it in a transmitted sound affecting both the sound and multiplex signal that is responsible for generation of the clear stereo signal. What they do is filter out the noise in the incoming DC voltage. These capacitors have to be as close as possible to a BA1404 chip and a variable coil because this will GREATLY improve the sound quality, sound separation and even frequency stability as well. Another reason is the use of two 1nF decoupling capacitors one for BA1404 chip and another for 3.5 variable coil.
First reason is the use of 38 KHz crystal which provides rock solid frequency for stereo encoder. There are several factors that account for improved sound quality and a separation. It can also be supplied from two 1.5V batteryĪnother quality of the presented BA1404 transmitter is a crystal clear stereo sound and improved sound separation. The transmitter can work from a single 1.5V cellīattery and provide excellent crystal clear stereo Happy to announce that this goal and expectations Stability, maximizes transmitter's range, and That improves sound quality, has very good frequency Simple to test many existing BA1404 transmitterĭesigns, compare their performance, identify weaknessesĪnd come up with a new BA1404 transmitter design The above FM transmitter design is a result of
SAT receiver, and many other audio sources.
#Fm stereo generator kit tv
Transmitter you will be able to transmit MP3 musicįrom your iPod, computer, discman, walkman, TV In your car, this transmitter will let you do Wireless link between your iPod and a receiver The music around the house, or simply create a You want to create your own radio station, transmit
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