<div dir="ltr">Pi heatsinks galore...<div><br></div><div><a href="https://www.amazon.com/s/ref=nb_sb_ss_c_1_7?url=search-alias%3Daps&field-keywords=pi3+heatsink&sprefix=pi3+hea%2Caps%2C131&crid=1V39GG15UYOAL">https://www.amazon.com/s/ref=nb_sb_ss_c_1_7?url=search-alias%3Daps&field-keywords=pi3+heatsink&sprefix=pi3+hea%2Caps%2C131&crid=1V39GG15UYOAL</a><br></div><div><br></div><div>73,</div><div><br></div><div>Scott</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Jan 7, 2017 at 3:08 PM, Terry Fox <span dir="ltr"><<a href="mailto:tfox@knology.net" target="_blank">tfox@knology.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">***** High Performance Software Defined Radio Discussion List *****<br>
<br>
Also look for heat sink kits for the Raspberry Pi.  They often come in sets of three.<br>
73, Terry, N4TLF<br>
<br>
<br>
-----Original Message----- From: Kjell Karlsen<br>
Sent: Saturday, January 07, 2017 1:16 PM<br>
To: <a href="mailto:hpsdr@lists.openhpsdr.org" target="_blank">hpsdr@lists.openhpsdr.org</a><br>
Subject: [hpsdr] Fwd: Re: Mercury questions<br>
<br>
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Fra: "Kjell Karlsen" <<a href="mailto:la2ni@online.no" target="_blank">la2ni@online.no</a>><br>
Til: <a href="mailto:wb4gcs@amsat.org" target="_blank">wb4gcs@amsat.org</a><br>
Cc:<br>
Emne: Re: [hpsdr] Mercury questions<br>
Dato: Sat, 07 Jan 2017 17:58:11 +0100<br>
<br>
Hi Jim.<br>
<br>
The heat sink is probably placed on the ADC.<br>
<br>
I bought a lot of them on e-bay some years ago. They are made for use on<br>
RAM chips in a PC, they I got have PN: RHS-03 but anyone works. 12x13 mm<br>
or so.<br>
<br>
73, Kjell<br>
<br>
<br>
<br>
<br>
På Sat, 07 Jan 2017 16:16:25 +0100, skrev Jim Sanford <<a href="mailto:wb4gcs@wb4gcs.org" target="_blank">wb4gcs@wb4gcs.org</a>>:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
***** High Performance Software Defined Radio Discussion List *****<br>
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All:<br>
<br>
I am helping a friend get an HPSDR going.  In comparing his Mercury  board with my two boards, I see that one of mine has a heatsink on U5.   My other board (purchased from TAPR years ago) and my friend's board do  not have a heatsink on U-5.<br>
<br>
I do not see a reference to a heatsink in the BOM.  Thermal imaging predictably shows higher temperatures on the devices without a  heatsink. (161F versus 150F or so on the heatsink.)<br>
<br>
This was obviously added to my one board somewhere along the way.  Does anybody know when/why?<br>
<br>
Specifically, should I be looking for heatsinks for the two boards?  If so, does anybody have/remember part number and source?<br>
<br>
Or is this "nice to have" but not necessary?<br>
<br>
Thanks & 73,<br>
<br>
Jim<br>
<br>
<a href="mailto:wb4gcs@amsat.org" target="_blank">wb4gcs@amsat.org</a><br>
<br>
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