[hpsdr] Pandora Update and Question

[Zucker, Friedhelm]

Hi,

Those who need a high accuracy and quality prototype of a front or back panel very fast might take a look at

http://www.frontpanelexpress.com/ in the US,

http://www.schaeffer-ag.de in Europe.

They offer a free design software (including price calculation) and a fast production at a very reasonable price.

Anyway, they are too expensive for mass-pro.
But taking into account the extra milling cost for fast PCB manufacturers, 
they might be in the same price region for single/low quantities and the panels look perfect ;-)

73 de DL9GAZ


 

>-----Ursprüngliche Nachricht-----
>Message: 11
>Date: Tue, 4 Sep 2007 11:49:26 -0700 (PDT)
>From: Chris Albertson <chrisalbertson90278 at yahoo.com>
>Subject: Re: [hpsdr] Pandora Update and Question
>To: "hpsdr at hpsdr.org" <hpsdr at hpsdr.org>
>Message-ID: <645978.42893.qm at web56505.mail.re3.yahoo.com>
>Content-Type: text/plain; charset=iso-8859-1
>
>
>I looked at the 3D model on the wiki.  I occurred to me that the only
>truly custom part is the pack panel.    Any proper size case could
>work as long as the slots on the back matched the cards that are
>plugged into Atlas.  Perhaps a cheap way to get this back panel made
>with international distribution is to not make the back panel out
>of sheet metal but from PCB material (coper clad fiberglass.)
>
>Any of a dozen of the overnight PCB fabricators can make a custom
>board with holes routed the exact shape of the connectors on the
>backs of the various HPSDR cards. The coper cladding makes as good
>a shield or ground as does aluminum sheet.  The real difference is
>that for sheet metal you need a high volume production run to make
>stamping out custom prts economical but PCB makers are setup for
>low volume custom work.  There could be a half dozen design files
>on the web, one panel design for a specific mix of HDSDR cards.
>
>I'm thinking of using this technique myself for the front pannels
>of some equipment I'm building for myself.  I occured to me a
>while back that I could etch traces to _much_ closer toleraces
>than I can cut aluminum sheet so why not use my PCB layout 
>software for front panel design?   So if I can do front panels
>why not rear panels with connector cutouts?
> 
 
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