[Elecraft] K3S Build Progress: 1st power-on

[ae4pb at carolinaheli.com]

The small box appears to be missing for the TCXO. I've gone through the
bubble wrap jungle twice. 
On the gloves. My static mat is grounded via the static lead, The work piece
is grounded via a static lead to the mat, and I'm grounded to the mat via
another lead. It's a real world static sensitive assembly setup. I've seen
this done in manufacturing so I'm not sure where any ESD precautions are
defeated. I've even seen the work lead left off in manufacturing. I added
just because. *shrug*..maybe I missed something. 
Jerry Moore
AE4PB, K3S Sn. 10324

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jim
Rogers
Sent: Thursday, September 17, 2015 8:54 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3S Build Progress: 1st power-on

The assembly manual is quite clear when it calls for SS (stainless
steel) hardware.

RE: surgical rubber gloves - I would advise against that. The purpose of the
anti-static mats and ESD percautions would be defeated by the use of any
insulating material between you and the boards you are handling. 
Remember the whole purpose is to keep everything at the same potential. 
Remember the old high school physics experiment of the rubber rod and the
silk cloth?

The TCXO is probably in a small box protected by conductive foam.

73s, Jim, W4ATK
On 9/17/2015 7:30 AM, ae4pb at carolinaheli.com wrote:
> Well the Assembly so far has gone pretty well; other than the odd 
> hardware dance. This is an area that can be improved dramatically 
> without being overly complex. There's apparently one set of Stainless 
> hardware and the rest are zinc. I infer from the assembly that all (or 
> nearly all) hardware that is on the OUTSIDE or mates to outside
screws/bolts is stainless.
> Everything internal ONLY is zinc.
>
>   
>
> My Hints/Tips:
>
> 1.   Wear surgical/rubber gloves - During assembly I suggest wearing thin
> rubber gloves (lowes, home depot..etc.. ). That helps keep 
> oil/fingerprints off of everything and you get a slight better grip.
>
> 2.   Use a magnetic parts tray - even for the SS hardware it helps as they
> have some slight carbon content.
>
> 3.   Use a magnetic tipped screwdriver.
>
> 4.   User gravity to put/keep washers on the screws - don't be afraid to
> pick up the assembly you're working on and position it such that 
> gravity helps keep parts where they need to be. Keep it Simply Simple.
>
> 5.   Work in a well-lighted area and I'd even suggest a desk/work lamp. I
> have plenty of light in my office and the addition of a desk lamp made 
> a dramatic difference to my work.
>
> 6.   Don't mix bags - keep hardware from one bag in it's own container.
> Don't mix zinc and stainless J
>
> 7.   Don't be distracted - ask the wife, kids, pets, ..etc.. to leave you
be
> for a bit. I had to dis-assemble/re-assemble the front panel several 
> times because my better half wanted to share details of something. 
> Being that she has the higher priority I listened and inadvertently 
> assembled some parts incorrectly and caught it on verification.
>
>   
>
> Well I'm past the resistance and first power-on test. Just need to 
> figure out if/how they packed the TCXO. I have the KREF3 module but 
> can't locate the TCXO.. not many parts left, 3 modules, the 100w PA and
sheet metal mmmm.
>
>   
>
>   
>
> Jerry Moore
>
> AE4PB, K3S SN# 10324
>
>   
>
>   
>
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