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Datashwet sure seems like that empty location where a SMD cap would fit would be wired up to pin It is not solving it at all, it is merely “covering it up” but it is still there and will always be there until the pilot level is correctly adjusted.

Analog Layout Finger Size 4. Apparently the one he has now after the run of them is working good so far. Me too for bn1415 weekend test. RFB Well despite all the little improvements that can be done to the FM02, its a good little unit for what is there. Hooked it up and it’s about par for the corse now I hooked it up backwards and fried the whole thing. Had I gotten a perfect transmitter done, and nothing in the datashedt, what good would that have done me?

After this was in place, the sound is nice and clear. The pf will get you in the ball park and the maximum capacitance you want in there would be a 5 nano datasheer.

I still haven’t been in the same room as mine so can’t check for myself. PLL takes a frequency of VCO, divides it dxtasheet a lower frequency which can be compared with a stable reference oscillator. Dec 248: This is what I use, get it all at radio shack, use a perf board, bend the component leads to each other and solder them to datssheet the circuit.


The pilot rides at around Power supply input filtering could use some attention too.

Arduino communication with bh

Won’t even turn on now so I guess I’m done. Share this post Link to post Share on other sites. Yes with the volume all the way down I still have static when it’s hooked up to one of my laptops. In order to eatasheet this, a proper modulation monitor or O-scope capable of Mhz or more will be needed to adjust properly. By default, this pin is at a high capacitance dataasheet when left open.

With it I have Suggest a cheap FM transmitter IC However if I unplug the 3. I had a ton of 60hz buzz in my transmitter with anything plugged into it even a battery powered MP3 player using the supplied antenna, the minute I hooked up my CB antenna all the buzzing went away and it sounds great again! It’s all I got — John. They said they will send it to me tomorrow.

I’ll need to google about 13 things just to understand this statement.

Only way to really know is to have the schematic of your particular unit, or begin probing from Pin 19 to the nearby SMD components close to Pin 19 and check for continuity on one of the pads facing Pin Connect a relatively short wire the darn transmitter’s antenna output 2.

About RF section,I’m absolutely not clear about what u r pointing at I put this “last” as for the priority list of striving for perfection for multiple reasons.

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A mono audio signal can be from a microphone and most FM datsaheet circuits have enough gain for a microphone. In my truck, there’s probably better filtering in that head unit for the pilot tone, and it’s barely noticeable.

If there are bn1415 enhancements that can be made as with the FM02 to make it a bit better from RF’s suggestions that would be great. I did notice that when I touched the braided part of the antenna Idunbenhad stylemy buzz would go away. The only thing that may affect it is the mounting and proximity to other objects. Also if I leave it hooked up to my iPad and stop music playback there is no static. I hear ya, RFB. Don’t be unhappy with your FM It does not have enough pre-emphasis and has no filtering whatsoever.

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I used a plain ol ceramic disc cap, clipped the leads so they would be short but long enough to allow folding of the capacitor on its side so it rests on the board. The file will be downloaded in just a moment.

Those that are having issues, they all seem to be pretty much the same kind of issues considering the differences in dafasheet local conditions, setups and antennas being used. Thnx for your input. Maybe I read into it too bh4115, but the verbiage very much seemed like you were saying that the numbers were in favor of FM02s being bad and Uke was one of the few that had datashet work well.

Given the fact over of these units have been purchased and shipped by me, I would say the ‘problems’ are non existent in any real numbers. I managed to get one but there is no sample schematic in the Datasheet.

I cut one end of the rg58 and soldered the center diod to one side of the dipole and soldered the shielding to the other side.

Headphone amplifier is small enough to fit in Altoids tin box, and thanks to low power consumption may be supplied from a single 9V battery. Does it matter if the cap is ceramic, tantalum, or something else?

I got the shipping info and look forward to getting up and running next week.