[Elecraft] RE: N-GEN: LED but no noise

[DAVE HEALY]

Ted, WB3AVD wrote:
"Hi folks:
built all the mini-kits this weekend, but this one not yet working. The =
LED
lights, but no noise! I've rechecked all components--not much chance =
here
for mistakes! Is it possible that I've mis-installed U1 (the MMIC)?? I
soldered its four leads directly to the silver solder pads on the =
surface of
the PCB, in the correct orientation. Correct?? No noise. I then =
desoldered
it, thinking I'd done something wrong. Should I have routed the leads to =
the
four nearby holes in the PCB instead??  And should the number on the =
surface
of U1 be "up"?? The directions seem unclear on this.Any chance my U1 =
(MMIC)
is dead?  Thanks for the advice, again!"

Hi, Ted.  Had the same problem.  I ended up flopping U-1 upside-down =
(with the cut-lead input still pointing toward the center of the board). =
 And it worked.

Queried Gary about this and he said it shouldn't matter as both of the =
90deg leads that go to the top and bottom of the board are grounds.  My =
printing on the device is now down:

http://home.internetcds.com/~barbados/u1.jpg

Try flopping it with the cut lead to the center of the board and yes, =
just solder to the pads, not the holes.

Good luck!

73,

-dave-  N7DKK Oregon



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