I added 1000pf cap and .1uf cap parallel on the 5volt regulator and a 50 ohm resistor in series with the audrino power and I don't have any clicks anymore but still have the birdie but I can deal with that for the time being.
On Fri, Apr 14, 2017 at 6:55 PM, davetelling .
<davetelling@...> wrote:
Good & bad news..
After trying a variety of ways to figure out where the tuning noise was originating, I finally tried powering the Raduino board from a separate 12V supply. That totally eliminated the tuning clicks, but did nothing for the 7.199MHZ birdie.
However... when attempting to add additional power supply bypassing on the Raduino, I accidentally hit the si5351 with 12V. That did not go well..
Now, I have 10 pcs. on order, so I can blow up a few more if necessary.
At any rate, it may be worth investigating the clicks in other radios. See if yo ucan split the Raduino and mani board power source & see if it helps.
