To: rsgb_lf_group@blacksheep.org
Date: Sun, 17 Mar 2019 19:30:54 -0400
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From: <riese-k3djc@juno.com>
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Subject: Re: LF: 160 years of Popov birthday
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why not build one,, i  did several years ago,, took a lot of RF to
activate but it worked

Bob K3DJC

On Sun, 17 Mar 2019 22:02:36 +0000 (UTC) James Hollander
<mrsocion@aol.com> writes:
Hi Roman,   

Yes, I wonder how to do it in software.  As you know, a coherer has a
large number of particles that statistically become more closely packed
and connective in response to RF voltage or current applied to them.   

Since software defined radios have replaced many functions in short wave
receivers with software on a computer, why not envisage some software
virtualization of the coherer.  We've been trained to think a coherer is
a quaint relic of the first days of radio.   But what truly are the
performance limits of the coherer in principle and what improvements
starting from the coherer concept might actualize advances or
technological alternatives in radio?   Perhaps ultimately the answer is
"None",  but has  the question even been probed.

I recognize most of us may not be in a position to inquire into the
matter, but I want to put the topic forward.   If there's any group that
includes someone with the background and interests to potentially think
through this software challenge, they're probably in this
LF/VLF/ULF/SLF/ELF group now or in the future!

TU & 73, Jim H    W5EST 


-----Original Message-----
From: Roman <rw3adb@YANDEX.ru>
To: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Sent: Sun, Mar 17, 2019 7:34 am
Subject: Re: LF: 160 years of Popov birthday


Hi Jim!

PSE more info about your software, OM!
VY interesting. 


> FB, Roman. BTW, I've wondered how one could write radio detection
software to act like a coherer and improve upon its principle. The
software would be a "swarm detector" working on the collective
interaction of many elemental pieces or software elements. 73, Jim H
W5EST
-- 
73!

Roman, RW3ADB 
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<DIV>why not build one,, i&nbsp; did several years ago,, took a lot of RF =
to=20
activate but it worked</DIV>
<DIV>&nbsp;</DIV>
<DIV>Bob K3DJC</DIV>
<DIV>&nbsp;</DIV>
<DIV>On Sun, 17 Mar 2019 22:02:36 +0000 (UTC) James Hollander &lt;<A=20
href=3D"mailto:mrsocion@aol.com">mrsocion@aol.com</A>&gt; writes:</DIV>
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 10px; MARGIN-LEFT: 10px; BORDER-LEFT: #000000 2px =
solid"=20
dir=3Dltr>
  <DIV>Hi Roman,&nbsp;&nbsp; </DIV>
  <DIV>&nbsp;</DIV>
  <DIV>Yes, I wonder how to do it in software.&nbsp; As you know, a coherer=
 has=20
  a large number of particles that statistically&nbsp;become more closely =
packed=20
  and connective in response to&nbsp;RF voltage or current applied to=20
  them.&nbsp;&nbsp; </DIV>
  <DIV>&nbsp;</DIV>
  <DIV>Since software defined radios have replaced many functions in short =
wave=20
  receivers with software on a computer, why not envisage some software=20
  virtualization of the coherer.&nbsp; We've been trained to think a =
coherer is=20
  a quaint relic of the first days of radio.&nbsp;&nbsp; But what truly are=
 the=20
  performance limits of the coherer in principle and what improvements =
starting=20
  from the coherer concept might actualize advances or technological=20
  alternatives&nbsp;in radio?&nbsp;&nbsp;&nbsp;Perhaps ultimately the =
answer is=20
  "None",&nbsp; but has&nbsp; the question even been probed.</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>I recognize most of us may not be in a position to inquire into the=
=20
  matter, but I want to put the topic forward.&nbsp;&nbsp; If there's any =
group=20
  that&nbsp;includes&nbsp;someone with&nbsp;the background and interests&=
nbsp;to=20
  potentially&nbsp;think through this software challenge,&nbsp;they're =
probably=20
  in&nbsp;this&nbsp;LF/VLF/ULF/SLF/ELF group now or in the future!</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>TU &amp; 73, Jim H&nbsp;&nbsp;&nbsp; W5EST&nbsp;</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>&nbsp;</DIV>
  <DIV=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: arial,helvetica; COLOR: black">---=
--Original=20
  Message-----<BR>From: Roman &lt;rw3adb@YANDEX.ru&gt;<BR>To: rsgb_lf_group=
=20
  &lt;rsgb_lf_group@blacksheep.org&gt;<BR>Sent: Sun, Mar 17, 2019 7:34=20
  am<BR>Subject: Re: LF: 160 years of Popov birthday<BR><BR>
  <DIV dir=3Dltr>Hi Jim!<BR clear=3Dnone><BR clear=3Dnone>PSE more info =
about your=20
  software, OM!<BR clear=3Dnone>VY interesting.=20
  <DIV id=3Dyqtfd07414 class=3Dyqt2192406977><BR clear=3Dnone><BR clear=3D=
none>&gt; FB,=20
  Roman. BTW, I've wondered how one could write radio detection software to=
 act=20
  like a coherer and improve upon its principle. The software would be a "=
swarm=20
  detector" working on the collective interaction of many elemental pieces =
or=20
  software elements. 73, Jim H W5EST<BR clear=3Dnone>-- <BR=20
  clear=3Dnone>73!</DIV><BR clear=3Dnone>Roman, RW3ADB=20
  <DIV id=3Dyqtfd00255 class=3Dyqt2192406977><BR clear=3Dnone><BR=20
  clear=3Dnone></DIV></DIV></DIV></FONT>
  <DIV>&nbsp;</DIV></BLOCKQUOTE></BODY></HTML>

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