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

Thu Jul 15 19:40:11 PDT 2010

I am very nearsighted and do not use magnification - the human eye is 
the best lens that you can buy !  If you are farsighted that is a 
different  issue all together.

Harbor freight has a nice 3x Clip on Magnifier [www.harborfreight.com] # 
66825 @ $6 and also a Micro Flush Cutter # 90708 @ $2 hard to beat.  
Their [on sale] $1.99 DMMs are exceptional as well and you can not buy 
test leads for that price.

Be sure to get a solder sponge [damp] & holder to keep the tip clean 
along with steel wool.  I use a Weller WR-40P Iron with a ST6 tip.  I 
also have a 1N4004 diode in series with a switch [put in a gang box] so 
the iron can idle with out building up crud.

I prefer SST Dental picks and hemostats for handling parts and placing 
on pcbs.

Good luck, 73

Dick Faust K9IVB

Dwayne L wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> which precautions in particular for static?
>
> I good advice on the floor, I think I will relocate to the kitchen so I have access to a smooth floor.
>
> For magnification, what works well for folks with glasses? I am not really blind, but wasn't sure if I needed something to use with my glasses or could get away without (never tried).
>
> --- On Thu, 7/15/10, Tim O'Rourke <w4yn at earthlink.net> wrote:
>
>   
>> From: Tim O'Rourke <w4yn at earthlink.net>
>> Subject: Re: [hpsdr] So I ordered an atlas, preparation is in order
>> To: "Dwayne L" <wraithx at yahoo.com>, hpsdr at lists.openhpsdr.org
>> Date: Thursday, July 15, 2010, 2:45 PM
>> 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
>>
>>     
>
>
>
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