[hpsdr] So I ordered an atlas, preparation is in order

[Tim O'Rourke]

The SMD parts on this board are not too difficult to handle, get a good pair of tweezers designed for smd, the have a small undercut to assist in holding flea size parts and keep from launching them. Claen floor and work bench in case one gets away.
Use fine solder .015 or .032 max I like Kestler multicoe, I do not use lead free.
Apply thin layer of solder to 1 pad only solder that one leg or side while holding park in correct location. Press down on part and resolder the pad you just did, seats part against board. Continue to other side or legs of part. Use magnifier head set it helps.
NUMBER ONE before you start to install the card sockets double and tripple check orientation of pin 1 so that all the card slots are orientaed corerectly before soldering them on board. Solder on pin and then reheat that pin while pressing card holder against PC board. Check oriendation one more time before soldering all the contacts. Of you get a card 180 degrees off you might just as well order an new Atlas unless you have a good vacuume desodering station even with this and multilayer board you may destroy the plated through holes getting that socket off.
Take static precautions with regulators and check orientation before soldring.

Tim W4YN

-----Original Message-----
>From: Dwayne L <wraithx at yahoo.com>
>Sent: Jul 15, 2010 11:49 AM
>To: hpsdr at lists.openhpsdr.org
>Subject: [hpsdr] So I ordered an atlas, preparation is in order
>
>***** High Performance Software Defined Radio Discussion List *****
>
>Thanks to the folks that answered my previous questions, and I apologize for not following up right away.
>
>I was skimming the assembly manual, and I was curious. I just noticed the caps were polarized, which was my first question. Darn thorough instructions! Is there any real way, other than starting to plug everything else in to test that I didn't goof up? I'll probably have this guy done long before I start ordering more.
>
>On the scale of difficulty, it doesn't look terrible, but I do know I have to wrap my brain around the idea of "small".
>
>Does anyone have any tips or ideas on tools of the trade? I've built stuff before, mostly heathkit stuff. Never done surface mount other than tapping boards for test leads and voltage modifications (gotta love nvidia video cards). I'm ordering a real soldering station, instead of my little 15 watt rad shack special, but not sure if it will be here in time.
>
>
>-----------
>There are 10 kinds of people in the world...
>those who understand binary, and those who don't
>
>
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Tim O'Rourke 
W4YN at ARRL.Net
Low Power Amateur Radio Rocks 
Member of Flying Pigs,ARCI,GQRP,RSGB,ARRL Life Member
NHRA Life Member

 1279223116.0