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W1 Circuit Board

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David Heinsohn

W1 Circuit Board

I just started working on the W1. So I just really looked at the
circuit board. I noticed that the pads seem to be white rather than
silver or gold. So all you bright folks can tell me what's different
and why. I assume that this is a new and better way to produce a
board. It certanly takes solder OK.

TNX
de
KD0R
David

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Don Wilhelm-4

Re: W1 Circuit Board

David,

I believe that is one version of the RoHS compliant solder pads.

73,
Don W3FPR

David Heinsohn wrote:

> I just started working on the W1. So I just really looked at the
> circuit board. I noticed that the pads seem to be white rather than
> silver or gold. So all you bright folks can tell me what's different
> and why. I assume that this is a new and better way to produce a
> board. It certanly takes solder OK.
>
> TNX
> de
> KD0R
> David
>
>

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Brett Howard

Re: W1 Circuit Board

I thought the RoHS compliant stuff that Elecraft is doing was all in the
ENIG process. I've ordered a K1 and a K3 since RoHS and all the boards
are ENIG. Perhaps for the W1 they are using IMAg?

I should explain:
ENIG = Electroless Nickel Immersion Gold (or gold pads)
or
IMAg = Immersion Silver (or silver (whiteish) pads)

For the record both have their pluses and minuses such as the IMAg is
more susceptibile to oxidization and other cleaning issues (cleaning
when the boards are made) where as ENIG is usually less often plagued by
cleaning issues however contamination in the process can lead to whats
referred to as black pads. ENIG costs a little more and is generally
accepted as slightly "better". Probably mostly because of the higher
cost. ;)

~BTH

On Sat, 2009-07-25 at 19:52 -0400, Don Wilhelm wrote:

> David,
>
> I believe that is one version of the RoHS compliant solder pads.
>
> 73,
> Don W3FPR
>
> David Heinsohn wrote:
> > I just started working on the W1. So I just really looked at the
> > circuit board. I noticed that the pads seem to be white rather than
> > silver or gold. So all you bright folks can tell me what's different
> > and why. I assume that this is a new and better way to produce a
> > board. It certanly takes solder OK.
> >
> > TNX
> > de
> > KD0R
> > David
> >
> >
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

Matt Palmer-4

Re: W1 Circuit Board

ENIG is better but unless its class 3 equipment it doesnt make much
difference....

Matt
W8ESE
Former KD8DAO

On Sun, Jul 26, 2009 at 5:00 AM, Brett Howard<[hidden email]> wrote:

> I thought the RoHS compliant stuff that Elecraft is doing was all in the
> ENIG process. I've ordered a K1 and a K3 since RoHS and all the boards
> are ENIG. Perhaps for the W1 they are using IMAg?
>
> I should explain:
> ENIG = Electroless Nickel Immersion Gold (or gold pads)
> or
> IMAg = Immersion Silver (or silver (whiteish) pads)
>
> For the record both have their pluses and minuses such as the IMAg is
> more susceptibile to oxidization and other cleaning issues (cleaning
> when the boards are made) where as ENIG is usually less often plagued by
> cleaning issues however contamination in the process can lead to whats
> referred to as black pads. ENIG costs a little more and is generally
> accepted as slightly "better". Probably mostly because of the higher
> cost. ;)
>
> ~BTH
>
> On Sat, 2009-07-25 at 19:52 -0400, Don Wilhelm wrote:
>> David,
>>
>> I believe that is one version of the RoHS compliant solder pads.
>>
>> 73,
>> Don W3FPR
>>
>> David Heinsohn wrote:
>> > I just started working on the W1. So I just really looked at the
>> > circuit board. I noticed that the pads seem to be white rather than
>> > silver or gold. So all you bright folks can tell me what's different
>> > and why. I assume that this is a new and better way to produce a
>> > board. It certanly takes solder OK.
>> >
>> > TNX
>> > de
>> > KD0R
>> > David
>> >
>> >
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

David Pratt

Re: W1 Circuit Board

>On Sun, Jul 26, 2009 at 5:00 AM, Brett Howard<[hidden email]> wrote:
>> I thought the RoHS compliant stuff that Elecraft is doing was all in the
>> ENIG process. I've ordered a K1 and a K3 since RoHS and all the boards
>> are ENIG. Perhaps for the W1 they are using IMAg?

Bring back Lead/Tin solder!

We all got our water through lead pipe and brushed our teeth with
toothpaste from lead tubes. We got along very nicely until we had to
find jobs for the legislative bureaucrats. The world has gone crazy.

73
--
David G4DMP
Leeds, England, UK

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Brett Howard

Re: W1 Circuit Board

HASL is the best of all worlds... Cept for one small problem... It
really cuts into your European sales! ;)

~Brett

On Sun, 2009-07-26 at 13:03 +0100, David Pratt wrote:

> >On Sun, Jul 26, 2009 at 5:00 AM, Brett Howard<[hidden email]> wrote:
> >> I thought the RoHS compliant stuff that Elecraft is doing was all in the
> >> ENIG process. I've ordered a K1 and a K3 since RoHS and all the boards
> >> are ENIG. Perhaps for the W1 they are using IMAg?
>
> Bring back Lead/Tin solder!
>
> We all got our water through lead pipe and brushed our teeth with
> toothpaste from lead tubes. We got along very nicely until we had to
> find jobs for the legislative bureaucrats. The world has gone crazy.
>
> 73

gdaught6

Re: W1 Circuit Board

In reply to this post by David Pratt

David wrote...

< snip >

> The world has gone crazy.

Perhaps from too much lead ingestion! 8-)

73,

George T Daughters, K6GT
CU in the California QSO Party (CQP)
October 3-4, 2009

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Alan Bloom

Re: W1 Circuit Board

In reply to this post by Brett Howard

The K3 needs the gold flash coating so that the pushbuttons work
reliably. That's probably why it uses ENIG.

Al N1AL

On Sun, 2009-07-26 at 02:00 -0700, Brett Howard wrote:

> I thought the RoHS compliant stuff that Elecraft is doing was all in the
> ENIG process. I've ordered a K1 and a K3 since RoHS and all the boards
> are ENIG. Perhaps for the W1 they are using IMAg?
>
> I should explain:
> ENIG = Electroless Nickel Immersion Gold (or gold pads)
> or
> IMAg = Immersion Silver (or silver (whiteish) pads)
>
> For the record both have their pluses and minuses such as the IMAg is
> more susceptibile to oxidization and other cleaning issues (cleaning
> when the boards are made) where as ENIG is usually less often plagued by
> cleaning issues however contamination in the process can lead to whats
> referred to as black pads. ENIG costs a little more and is generally
> accepted as slightly "better". Probably mostly because of the higher
> cost. ;)
>
> ~BTH
>
> On Sat, 2009-07-25 at 19:52 -0400, Don Wilhelm wrote:
> > David,
> >
> > I believe that is one version of the RoHS compliant solder pads.
> >
> > 73,
> > Don W3FPR
> >
> > David Heinsohn wrote:
> > > I just started working on the W1. So I just really looked at the
> > > circuit board. I noticed that the pads seem to be white rather than
> > > silver or gold. So all you bright folks can tell me what's different
> > > and why. I assume that this is a new and better way to produce a
> > > board. It certanly takes solder OK.
> > >
> > > TNX
> > > de
> > > KD0R
> > > David
> > >
> > >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

Arie Kleingeld PA3A-2

K3 Synthesizer ALC Modification

In reply to this post by David Pratt

For all who still hesitate to do mods in their K3, here's a video how
easy some mods can be.
This video shows the KSYN3 ALC mod.

http://www.youtube.com/watch?v=CFS8ZtCNJ0A

73,

Arie PA3A

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