Date: Sat, 10 Nov 2018 15:54:23 +0000 (UTC)
From: Markus Vester <markusvester@aol.com>
To: rsgb_lf_group@blacksheep.org
Message-ID: <1926011534.196921.1541865263063@mail.yahoo.com>
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Subject: Re: LF: 1476 kHz AM
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Many thanks again also to Rik, Ian, Stefan, Mauro, Ewald for your fine obse=
rvations and suggestions, both on behalf of Ralph and from myself.=C2=A0=C2=
=A0I can say that we are=C2=A0overwhelmed by the number of positive respons=
es.

Yes some type of subaudio=C2=A0ID=C2=A0on the carrier would surely make sen=
se. I had thought of=C2=A0a phase modulation scheme (perhaps similar to=C2=
=A0the 162 kHz timecode), but at this speed it may have=C2=A0a negative imp=
act on synchroneous AM demodulators which use a PLL to regenerate=C2=A0the =
carrier.=C2=A0A very slow (several seconds) but characteristic frequency mo=
dulation may indeed be the best option.

Best 73,
Markus


-----Urspr=C3=BCngliche Mitteilung-----
Von: Mauro Giroletti <mauro.giroletti@alice.it>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 10. Nov. 2018 16:35
Betreff: R: RE: LF: 1476 kHz AM

Hi,=20
reception=C2=A0 1476khz my locator JN45nk .73Mauro Ik2GFT


 ----Messaggio originale----=20
Da: cpaul@gmx.net=20
Data: 10-nov-2018 15.59=20
A: <rsgb_lf_group@blacksheep.org>=20
Ogg: RE: LF: 1476 kHz AM=20
=20
The carrier is right now audible and visible on a=20
battery powered portable SDR (Reuter Pocket)=20
with just a small active ferrite antenna.=20
=20
73=20
Clemens=20
DL4RAJ=C2=A0=20

=20
=20


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<div style=3D"font-size:10pt;font-family:arial,helvetica,sans-serif;color:b=
lack;"><div style=3D"color: black; font-family: arial,helvetica,sans-serif;=
 font-size: 10pt;">Many thanks again also to Rik, Ian, Stefan, Mauro, Ewald=
 for your fine observations and suggestions, both on behalf of Ralph and fr=
om myself.&nbsp;&nbsp;I can say that we are&nbsp;overwhelmed by the number =
of positive responses.<br><br>Yes some type of subaudio&nbsp;ID&nbsp;on the=
 carrier would surely make sense. I had thought of&nbsp;a phase modulation =
scheme (perhaps similar to&nbsp;the 162 kHz timecode), but at this speed it=
 may have&nbsp;a negative impact on synchroneous AM demodulators which use =
a PLL to regenerate&nbsp;the carrier.&nbsp;A very slow (several seconds) bu=
t characteristic frequency modulation may indeed be the best option.<br><br=
>Best 73,<br>Markus<br><br><br>-----Urspr=C3=BCngliche Mitteilung-----<br>V=
on: Mauro Giroletti &lt;mauro.giroletti@alice.it&gt;<br>An: rsgb_lf_group &=
lt;rsgb_lf_group@blacksheep.org&gt;<br>Verschickt: Sa, 10. Nov. 2018 16:35<=
br>Betreff: R: RE: LF: 1476 kHz AM<br><br></div><div id=3D"yiv4036354262"><=
div>Hi, <br></div><div>reception&nbsp; 1476khz my locator JN45nk .</div><di=
v>73</div><div>Mauro Ik2GFT<br></div>
<br>
<blockquote>
  ----Messaggio originale----
 <br>Da: cpaul@gmx.net
 <br>Data: 10-nov-2018 15.59
 <br>A: &lt;rsgb_lf_group@blacksheep.org&gt;
 <br>Ogg: RE: LF: 1476 kHz AM
 <br>
 <br>The carrier is right now audible and visible on a
 <br>battery powered portable SDR (Reuter Pocket)
 <br>with just a small active ferrite antenna.
 <br>
 <br>73
 <br>Clemens
 <br>DL4RAJ&nbsp; <br><br>
 <br>
=20
<br></blockquote></div></div>
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