[AMPS] All Mode KW Transmitter firmware

[jeff millar]

Three words:   Ball Grid Array

Four words:  Micro Ball Grid Array

Personally, I like a propane torch for most stuff.  The biggest advantage is
the lack of corrosion causing Oxygen in the gas.  The usual hot air rework
stations spew hot O2 on your sensitive parts.  It's quite satisfying to see
the the BGA part snap into place with surface tension as you play the torch
across the PCB.

jeff
----- Original Message -----
From: "Radio WC6W" <wc6w@juno.com>
To: <warrenw@pentek.com>; <amps@contesting.com>
Sent: Friday, September 15, 2000 12:26 PM
Subject: Re: [AMPS] All Mode KW Transmitter firmware


>
> On Fri, 15 Sep 2000 12:05:01 -0400 "Warren J. Walsh" <warrenw@pentek.com>
> writes:
> >At 11:55 AM 9/15/00 -0400, Radio WC6W wrote:
> >
> >
> >Gee Marv, you mean you don't have a surface mount reflow solder station?
>  I
> >think every ham should have one of those in his tool kit! :-)))
> >
> >Before becoming a designer, I worked the bench as a technician and I'm
> >pretty good at fine pitch SMT soldering.  I now give most of my
> soldering
> >work to our production people, but I still have access and do my own
> >soldering from time to time.  So if you really need some help, send me
> your
> >boards and parts and I'll solder them on for you!
> >
> >73,
> >Warren - K2BM
> >
>
> Hi Warren,
>   Yes, I do have one of those fancy soldering setups... but, I don't like
> the way things are trending in the IC package department.
>
>   25 mils pitch wasn't too bad but, the DSP chip I'm looking at using has
> pins on 20 mil ctrs.;  And the Up-Converter chip is 19 mils -- Whoooo is
> making up these numbers!!
>
>    I just get a mite frustrated when every new part comes in a new
> (smaller!) package -- meaning a new PCB footprint to make up and
> sometimes another set of tips for the soldering station (at $$$ per!).
>
>   Makes me want to built something (to compensate) where the filament
> leads are fastened to the socket with ¼-20 bolts!  :-)
>
> 73,
>   Marv  WC6W
>
>
>
>
>
>
> *
>
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