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ad9850 vfo

I picked up one of the cheap ad9850 modules from China and made a new vfo. I modified this code from ak2b to use the ad9850 instead of the si5351. To see my si5351 vfo, click here.

ad9850_vfo

As you can see from the waveform and the frequency counter at the bottom, this little module seems very accurate. Since it also produces a square wave output, I may try to build a little function generator.

ad9850_waveform

 

I also tried my hand at some surface mount soldering. I picked up a few bare si5351 chips and some little adapter boards. I was just able to get it done with the big chisel tip I had on the iron, but before I do any more, I’m going to pick up a finer tip. I may try the solder paste and heat gun thing as well.

smd

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