Am So 21. September 2008 schrieb Werner Almesberger: > Uwe Klein wrote: > > I had thought about using the FR as an energy sink. > > Using a 4pole networkanalyzer and a pair of antenna > > in a grid dip meter style arrangement. > > This should indicate all absorbtive elements. > > My heart filled with joy upon reading this. You didn't exaggerate > about your lab being very well equipped :-) > > Let's hope Andy or Joerg can find something. > > Thanks, > - Werner >
I've never seen us investigating thus deeply and time-consuming on a certified-to-work fix anytime before, just to study *why* it's working. Probably that's what Graeme called "be happy with just doing tests". Alas I don't have any spare time for this kinda joy. I like to sell a high-quality (=bug-fixed) product *now*. Only answer I'm interested in is: why don't we already have those beads/EMI-filters in GTA02A7, though it's been validated to fix buzz since more than a month now, and we seemingly all accepted it's a viable fix for GSM-buzz (or at least we agree it's safe to have those beads even for GTA03: U4906, U4907!)? When are we going to give them a try on GTA02? Is anybody assuming we could spoil GTA02 design to a point where even replacing those EMI-filters by 0R would break the device? I urgently recommend to start to do a PCB with pads for EMI-filters *now*. I absolutely veto on producing GTA02 with a 100uF on C4306. @Sean: you asked me to solve this issue. That's my result for now. /jOERG
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