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Date: Fri, 22 Jun 2012 08:42:23 +0100 (BST)
From: Daniele Tincani <danieletincani@yahoo.com>
To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
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Subject: LF: Ferrite broadband (LF-MF) antenna?
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Hello LF,=0A=A0=0AI apologize to you all for resuming a topic that was alre=
ady largely debated here. I have seven of those=A0quite known russian surpl=
us ferrite rods (20cm x 1cm) and -=A0just for my fun - I'm planning to spen=
d some time in building an LF-MF antenna with them. I would like to obtain =
a=A0broadband (untuned) antenna, ideally VLF-LF=A0and/or LF-MF, suitable fo=
r outdoor installation, so what I would appreciate some suggestions about i=
s the required low-impedance amplifier, similar to those used in air-core b=
roadband loops, if it does make sense of course. Any ideas? I found an unus=
ed 12AU7 in=A0my drawer, could=A0it be effectively=A0chosen as the active d=
evice (low voltage)=A0for=A0such amplifier?=0A=0AThank you for any feedback=
=0A73=0ADaniele IZ5WWB
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:Co=
urier New, courier, monaco, monospace, sans-serif;font-size:10pt"><div>Hell=
o LF,</div><div>&nbsp;</div><div>I apologize to you all for resuming a topi=
c that was already largely debated here. I have seven of those&nbsp;quite k=
nown russian surplus ferrite rods (20cm x 1cm) and -&nbsp;just for my fun -=
 I'm planning to spend some time in building an LF-MF antenna with them. I =
would like to obtain a&nbsp;broadband (untuned) antenna, ideally VLF-LF&nbs=
p;and/or LF-MF, suitable for outdoor installation, so what I would apprecia=
te some suggestions about is the required low-impedance amplifier, similar =
to those used in air-core broadband loops, if it does make sense of course.=
 Any ideas? I found an unused 12AU7 in&nbsp;my drawer, could&nbsp;it be eff=
ectively&nbsp;chosen as the active device (low voltage)&nbsp;for&nbsp;such =
amplifier?<br></div><div>Thank you for any
 feedback</div><div>73</div><div>Daniele IZ5WWB</div><div>&nbsp;</div></div=
></body></html>
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