"John Popelish" wrote in message
. ..
Could you squeeze a 0.1 uF ceramic cap between U1 and L1, C5, connected
between ground and VBat?

I soldered an 0603 100nF cap onto pin 6 of U1 (Vbat) and then ran a 30ga.
wirewrap wire over to pin 4 (Gnd). It didn't make a noticeable change,
although I'm not 100% certain this is what you were suggesting.

---Joel