BA datasheet, BA circuit, BA data sheet: ROHM – Fm Stereo Transmitter,alldatasheet, datasheet, Datasheet search site for Electronic. Page 4. Page 5. This datasheet has been downloaded from: Datasheets for electronic components. Part, BA Category, Communication => Freq/Signal Converters/Generators. Description, FM Stereo Transmitter. Company, ROHM Electronics. Datasheet.

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You may also like: However, what I liked best datasyeet the BA was the amount of excitement it created among the hobbyists. In the circuit R7, C16, C14 and R6, C15, C13 forms the pre-emphasis network for the right and left channels respectively. I need a BA IC.

There is enough place to work around easily. I had to put my equaliser’s bass buttons up a bit. That’s not going to sound pleasant at all!! But horrors, I put in only one channel of Audio and ground the other channel’s input. Many hobbyists detested the BA when they tried to make it do what it was not supposed to do, making it the black chip of the FM Transmitter family. The kit took me about an hour to make. Network C9,C10, R4,R5 improves the channel separation. Thank you in advance.

The FM Stereo rules say that the Pilot should be a sine wave, not square as square wave would have harmonics. What is left in and right in.

A high quality stereo FM transmitter circuit is shown here. Can it be possible to make a radio mp3 broadcast a long distance without buying an external boaster? Is it available in India?


The Documentation describes how to make the kit very well, but does not mention any technical facts at all. Radio Transmitters Previous post Next post You may also like: Still the chip was fantastic in that it allowed you to transmit some kind of Stereo at the real low end. The BA is gone, long live the BA!! When you slightly overdrive a Mono signal, you get a slightly distorted na1404.

According to the way the FM standards were designed, one cannot transmit more than 15KHz as that would affect the 19 KHz pilot tone used to tell the receiver that the incoming signal is in stereo. These harmonics would fall into the higher part of the Eatasheet signal, deceiving the receiver into feeling that there was extraneous content in the original Audio channels.

Stereo Generators do need Limiters because the slightest clipping gives rise to distortion that is not harmonic. Page started on 19 July I have a problem with this coil. D Bass response was acceptable, but a bit lacking.

BA Rohm, BA Datasheet

Tuning was easy, The signal moved around by only 25 KHz initially till Thermal equilibrium was reached. That’s not as easy as it seems, you can write a book on Audio filters.

Professional gear would have a “brick wall” filter to remove all content above 15 KHz datashwet feeding it to the MPX. To make matters worse, the music would modulate the high frequency tone.

(PDF) BA1404 Datasheet download

Frednand Start your learning by trying out simple circuits like — lighting an LED. I was expecting a low level of signal to ooze through to the other channel, but not so distorted!!


The PCB is very good quality and so are the datashedt. I found I could cover my whole house and atleast mtrs out in the open. Hi Nin you can use series LC tuned circuit between Pins 5 and 6. It is a joy to assemble the kit. There were mailing lists and ftp sites arguing about the pros and cons of BA kits.

B Channel separation is not so good. The steeper the filter, the harder it gets to design them without other problems showing up. I could always tell between my Stereo signal and the pro signals next to it, but I could not tell exactly why.

The kit pre-emphasizes the Audio inputs passively. Left in datxsheet right in are audio inputs, of course. The Decoder in the receiver will erroneously construe this as if there was an 8KHz signal originally present in the Audio. A The CK was much noisier to begin with. Stereo FM transmitter circuit.

BA1404 Datasheet PDF

Sound quality did improve a bit by reducing Modulation levels. As expected the kit went berserk at the high end.

I tried different antenna and found that could shift the operating frequency by KHz. Add them up passively, just making sure they are in phase More complete method: For that I would like two copies of 38 kHz quartz please.