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Re: LF: VLF, easyloop

To: "[email protected]" <[email protected]>
Subject: Re: LF: VLF, easyloop
From: Daniele Tincani <[email protected]>
Date: Wed, 18 Apr 2012 00:02:04 +0100 (BST)
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Hello Stefan,
 
you know I was using an easyloop (with the LT1028A inside) when I managed (first time for me) to capture your 8970 Hz signal from my balcony. Very simple and reliable in my experience. I slightly modified a pair of R and C values to extend the frequency limit up to about 50 kHz. I connect the preamp to a 40-turns loop wound inside a square frame of PVC tubes.
 
73
Daniele

Da: Stefan Schäfer <[email protected]>
A: [email protected]
Inviato: Martedì 17 Aprile 2012 23:20
Oggetto: LF: VLF, easyloop

VLF,

I just built the preamp of Renato Romero's design for a VLF loop preamp, http://www.vlf.it/easyloop/_easyloop.htm
The circuit is very easy and compact and looks very promising, http://dl.dropbox.com/u/19882028/VLF/Easyloop.jpg. I took the LT1028 instead of the OP27 though.
I'm looking forward to do a new /p VLF test with my hoola hop loop in the forest soon.
Is there someone on air during the next days?

73, Stefan/DK7FC



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