[hpsdr] Penelope Toroids

[Phil Harman]

Hi Alan,

All the cores are the same material.

73's Phil...VK6APH


----- Original Message ----- 
From: "Alan Hochhalter" <alanh137 at comcast.net>
To: <hpsdr at lists.openhpsdr.org>
Sent: Monday, December 28, 2009 12:45 PM
Subject: [hpsdr] Penelope Toroids


> ***** High Performance Software Defined Radio Discussion List *****
>
> I've got an unfinished Penelope board I'm trying to assemble.
>
> I'm at the point where I am ready for the toroids, but have a question I
> hope someone can answer.
>
> According to the Bill Of Materials, L8 and L3 are Amidon T30-6 cores.
> Since I have a pre-assembled Penelope, I can see those toroids are each
> 5 turns. (not sure how you'd know that otherwise by the way unless you
> go through the calculations, have a board, or a photo to refer to)
>
> The BOM doesn't list a supplier or part number for L5, so I'm trying to
> decide if it is the same core as L3 and L8.  The L5 core looks the same
> on my pre-assembled board as L3 and L8 except it has 6 turns which seems
> reasonable since it has a larger inductance value.  Since there aren't
> any numbers on the cores, I don't know if they're the same even through
> they look identical.
>
> Can anyone enlighten me so I can make sure I've got the right cores?
>
> Thanks,
>
> Alan
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