[hpsdr] Card dimensions, current and future.

[Ben Hall]

Hi Lyle,

I know what you're saying:  Max height is the spacing of 20.32mm minus 
the thickness of one board, minus some room for thru-hole connector 
pins.  If the board is 1mm and we leave 2mm for thru-hole pins, that's 
17.32, of allowed component height.

But, that leaves no room for a piece of shielding to go between the cards.

Let's say the maximum component height is 15mm.  That means I've got 
2.32mm of space in which to locate an inter-board shield.

Perhaps said inter-board shield isn't needed?  Is there a convention for 
a ground plane layer in all of the current/proposed HPSDR boards?  If 
each board has a ground plane layer without significant non-shielded 
areas, perhaps that is sufficient and the case only need worry about 
external shielding?

BTW, nice to see another Army Aviation guy here.

Lyle Johnson wrote:
> Check the connector-to-connector spacing of ATLAS.  Allow some room for 
> through-hole connector pins on the bottom of the boards...
> 
> Lyle KK7P

-- 
Thanks and 73,
Ben, KD5BYB


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