[hpsdr] Pandora question

[John Ackermann N8UR]

Sorry, Alexander, but we don't have those details finalized yet as we 
are just now bending sheet metal for the first (factory-produced) 
prototypes.  We're looking at some sort of adhesive-backed foam strip, 
but the thickness will depend on the actual fit once we get things put 
together.

Foam is really the only option as a metal retaining bracket (which was 
our first thought) would result in shorts or mechanical interference; 
several of the boards do not have enough component top clearance for 
that.  Even a plastic bracket would have mechanical clearance problems, 
along with probably being prohibitively expensive to fabricate for our 
small volume.

John
----

Alexander Geckeler said the following on 03/04/2009 11:48 AM:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> John Ackermann N8UR schrieb:
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> Atlas mounts into the bottom of Pandora.  The cards plug in to Atlas. 
>> The top of Pandora has a hatch that allows access to the cards without 
>> fully disassembling the case.  The hatch has a piece of foam that 
>> presses down on the cards to hold them in place when the hatch is 
>> fastened down.
>>
>> John
>> ----
>>
>> Michael Ardai wrote:
>>> ***** High Performance Software Defined Radio Discussion List *****
>>>
>>> What are the plans for securing the individual pcbs to either Atlas 
>>> or Pandora?
>>> /mike
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> Hello John,
> 
> interesting that you will use foam to keep the boards in place. What 
> kind of foam (soft, hard ...) you are intent to use and of what 
> thickness at what given clearance from above to the upper edge of a board.
> 
> Alexander _______________________________________________
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