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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Hello, I am a professor of electronics in France, and I would like to work with my students on a stereo encoder. Sound quality did improve a bit by reducing Modulation levels.

Definitely NOT the chip to base your 5 W transmitter to broadcast around the town. It had a noticeable hiss making it sound like an old cassette player playing an even older cassette. Not noticeable when you play rock, but when I played the Bass drum track, after each drum beat, the high frequency note would ring and then stabilise a second dataheet. There is enough place to work around easily. This is done for matching the frequency response of the FM transmitter with the FM receiver.

Hi Nin you can use series LC tuned circuit between Pins datasjeet and 6. Stereo Generators do need Limiters datashert the slightest clipping gives rise to distortion that is not harmonic. The sound quality is good enough if you like loud Rock and Roll and are going to receive it on your small radio out on the porch while the kit’s b1a404 to your CD player indoors.

Tuning was easy, The signal moved around by only 25 KHz initially till Thermal equilibrium was reached. Maybe that’s the reason for the deficiencies noted above?


BA datasheet & applicatoin notes – Datasheet Archive

When you overdrive an MPX circuit, you are in for trouble big time. Maybe the BA was a decent enough little chip anyway, but nobody used it properly? No use post-morteming the BA as it’s gone, but hopefully the kit manufacturers will do their NJM kits properly. B Channel separation is not so good. It is a joy to assemble the kit.

I had to put my equaliser’s bass buttons up a bit. Suppose you have a 10 KHz Audio signal and it is clipped a bit, it will generate harmonics.

It also had an additional very slight high frequency tone. I connected the kit to my Kenwood CD and tuned it to Page started on 19 July One does have valid frequencies upto 53 KHz and their unwanted harmonics running around, along with the MHz carrier, warranting a board designed to RF standards.

Add them up passively, just making sure they are in phase More complete method: C13 and C14 are just coupling capacitors, nothing to do with pre-emphasis. It’s even great as your Dorm station. For that I would like two copies of 38 kHz quartz please.

Hello, how can I variate the output frequency? These harmonics would fall into the higher dztasheet of the MPX signal, deceiving the receiver into feeling that there was extraneous content in the original Audio channels. The FM Stereo rules say that the Pilot should be a sine wave, not square as square wave would have harmonics.

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Thank you in advance. The Documentation describes how to make the kit very well, but does not mention any technical facts at all. That’s not as easy as it seems, you can bba1404 a book on Audio filters.


Composite stereo signal is created by the stereo modulator circuit using the 38kHz quartz controlled frequency.

(PDF) BA1404 Datasheet download

Wanna have your own page here, write about your own experiences, own review, refute existing review, add comments to existing datasheef, publish your circuits? The harmonics generated are harmonics, ie still slightly pleasing to the ear. But horrors, I put in only one channel of Audio and ground the other channel’s input. A The CK was much noisier to begin with. The BA is gone, long live the BA!!

Cana Kit CK ( BA based Stereo FM Transmitter)

It was very slight but it was always there. Can you send me. Network C9,C10, R4,R5 improves the channel separation. I have a problem with this coil. However the PCB is single sided and does not have large ground areas.

I lost the “Stereo” and the “Tune” lamps on my receiver which began outputting odd sounds and beats. But the 38KHz crstal will be best. A high quality stereo FM transmitter circuit is shown here.

Or could it have been simple clipping? That’s not going to sound pleasant at all!! I could always tell between my Stereo signal and the pro signals next to it, but I could not tell exactly why.

To make matters worse, the music would modulate the high frequency tone. I really wonder if this slight high frequency note datasheeet caused by lack of a double sided board and large ground areas?