[hpsdr] Munin2 heat sink

[George Byrkit]

It just might be metric!  After all, it was designed by someone in Europe, and the US is
pretty much the only country where we'd be talking about inches and fractions thereof,
rather than metric measurements.

Personally, I think the US should produce stuff in metric much more than it does, because
it would be more acceptable to a wider audience, and maintainable without having to have a
second set of rarely used tools (like those Imperial nut drivers).  I have come to this
conclusion previously after 15 years in BioTech, where the poor field service guys had to
have both Imperial and Metric tools to service equipment.  And when we closed a facility
in the UK, and brought production back to the US, the mechanical engineers redimensioned
everything to Imperial, and made all kinds of errors!

73,
George K9TRV

-----Original Message-----
From: Hpsdr [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of MDS Info
Sent: Wednesday, July 22, 2015 2:41 PM
To: HPSDR
Subject: [hpsdr] Munin2 heat sink

***** High Performance Software Defined Radio Discussion List *****

Hello,

I am using my own heat sink on the Munin2 construction.

>From my measurements, a 0.345" standoff is required for the circuit board.

Can anyone else confirm this?

When I lay the pcb on the copper bar, and drop in the mosfet, the top of the
drain is 0.1"
above the pcb, and drain tab is about 0.005" thick...hence 0.25" thick bar +
(0.1 - .005).095"

???

BTW, almost everyone's pcb's were shipped Monday, first class.

73's

Glen K4KV



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