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Re: LF: VLF with two small loops.

from [Markus Vester] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: VLF with two small loops.
From: Markus Vester <[email protected]>
Date: Wed, 4 Jan 2017 06:03:47 -0500
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1483527829; bh=TKxD3H22KOvhkz6ZpHDLd0GImbpvhsMNhc37a/ZxjIU=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=adXJ8YYX+TSmYJEfXxoyi/BhcdHn3IYA8+FL1mgu/zL9KCGKhfAjvGPPMuqh81HVW oO8S8lBKYhtumP7bLASqI4Qsa2v9kIugFclEccJ0pfbDihZ8dW5wcOJkiWt4GmlYtD BQ1DL7Mmg6kZQaqGipfmW0N81Wx9XJI9ceGh2O6o=
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Editing the url slightly (www -> dl, remove the ? appendix) bypasses the cumbersome pre-download page:
https://dl.dropbox.com/s/9x26r4x4ifx3rzr/4%20m%20loops.zip

Another option would be more turns on the primary and secondary (e.g. 3 and 36). The idea is that the primary inductance of the transformer should be (much) greater than that of the single-turn loop.

Best regards,
Markus (DF6NM)


-----Ursprüngliche Mitteilung-----
Von: DK7FC <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Mi, 4 Jan 2017 11:21 am
Betreff: Re: LF: VLF with two small loops.

Hi Edgar,

Thanks, interesting pictures. What AL value do these ferrite cores have? Is it an FT80-77? Maybe the AL is to low, so you may get better results when using 3 of them in parallel, with the same number of turns, if you plan to use the loop on lower frequencies...
Is it intended as a portable equipment for experiments in quite locations? :-)

73, Stefan

Am 04.01.2017 02:43, schrieb edgar:
Hi Stefan,

Try this one.

https://www.dropbox.com/s/9x26r4x4ifx3rzr/4%20m%20loops.zip?dl=0

Dropbox have "improved their service" by making the public folder private from March this year.

I am trying to learn how to share files and found that the link changed when the zip file was updated with the SL .usr file and the frequency file.

Regards, Edgar
Moonah, Tasmania.
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