[NLRS] Power on 5760 MHz

[Russ Ramirez]

I have had 100% success so far using a Hakko 888 and 1.2mm tips along with
.38mm solder. The combination ensures there's not too much heat or solder.
I also have a ATTEN 850B reflow station that I use with silver solder paste
from Cash Olsen (http://kd5ssj.com), but honestly the former method is way
faster overall and you don't have to worry about solder bridges.

Russ
K0WFS

On Thu, Nov 8, 2012 at 10:55 AM, Dr. Gerald N. Johnson
<geraldj at weather.net>wrote:

>
>
> I expect to know more about QFN assembly by spring. After some
> experiments with cheaper parts. I'm wondering about old fashioned
> methods of sweating, like by applying solder, then wicking most of it
> off rather than using solder paste which tends to be expensive, and have
> short shelf life because the flux attacks the huge surface area of the
> tiny granules. And vendors are partiular about how thick solder paste is
> applied through a window in a stencil. A great technique for production,
> not easy for one off. Then I'd go to reflow the parts that can't be hand
> soldered.
>
> A thermostatically controlled lab hot plate with a bit of aluminum plank
> for a heat spreader seems like it may be very handy, though many an
> electric skillet has been applied with a slab of 1/8" or 1/4" aluminum
> as the heat spreader to make the heat at the board more uniform. An IR
> no contact thermometer is probably the handiest temperature check,
> though some sort of temperature indicating crayon may be as good and
> less costly if it can be located for the right temperature.
>
> 73, Jerry, K0CQ
>
>
> On 11/8/2012 10:02 AM, tosca005 at umn.edu wrote:
> >
> >
> > Jerry:
> >
> > Thanks for setting me straight on this. It sounds like it is well beyond
> my
> > abilities to work with, so I should scrap the idea. I guess it's like
> they
> > say, if it sounds too good to be true, it probably is exactly that! :)
> >
> > 73 de W0JT
> >
> >
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