Message-ID: <4DBD972B.3020604@telus.net>
Date: Sun, 01 May 2011 10:23:55 -0700
From: Scott Tilley <sthed475@telus.net>
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Subject: Re: LF: 325km with the QRPp QRSS30 beacon
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Nicely done Roger and Henry!

73 Scott
VE7TIL

On 5/1/2011 10:05 AM, Roger Lapthorn wrote:
> */"Because of the extremely low antenna efficiencies, 136kHz is not a 
> band for low power transmitters" - a quote from page 67 of "LF Today", 
> the excellent book by G3XDV and M0BMU./*
>
> Henny PA3CPM has sent me a screen shot taken this morning that shows 
> my signal reaching him in Holland. Just a few dB more would make quite 
> a difference and make the signal fully readable. I am very grateful to 
> Henny (and others) for working so hard to find me.
>
> I continue to be amazed, and really pleased, that something this 
> simple (2.4W RF, 50uW ERP, QRPp beacon TX and a simple thin wire loop 
> antenna) can be detected so far away, although I know others have done 
> far better.  Of course, I accept it would not be possible without the 
> signal processing available to us on the RX end and the skill of those 
> like Henny winkling out the signal from the noise.
>
> ....but maybe in the next edition of the book, the words should be 
> changed? :-)
>
> 73s
> Roger G3XBM
>
>
> -- 
> http://g3xbm-qrp.blogspot.com/
> http://www.g3xbm.co.uk
> http://www.youtube.com/user/g3xbm
> https://sites.google.com/site/sub9khz/
>


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    Nicely done Roger and Henry!<br>
    <br>
    73 Scott<br>
    VE7TIL<br>
    <br>
    On 5/1/2011 10:05 AM, Roger Lapthorn wrote:
    <blockquote        cite="mid:BANLkTikAYz2WYQ2imFnLms1HpMGJZRe3JA@mail.gmail.com"        type="cite">
      <div style="margin-left: 40px;"><b><i>"Because of the extremely
            low antenna efficiencies, 136kHz is not a band for low power
            transmitters" - a quote from page 67 of "LF Today", the
            excellent book by G3XDV and M0BMU.</i></b><br>
      </div>
      <br>
      Henny PA3CPM has sent me a screen shot taken this morning that
      shows my signal reaching him in Holland. Just a few dB more would
      make quite a difference and make the signal fully readable. I am
      very grateful to Henny (and others) for working so hard to find
      me.<br>
      <br>
      I continue to be amazed, and really pleased, that something this
      simple (2.4W RF, 50uW ERP, QRPp beacon TX and a simple thin wire
      loop antenna) can be detected so far away, although I know others
      have done far better.&nbsp; Of course, I accept it would not be
      possible without the signal processing available to us on the RX
      end and the skill of those like Henny winkling out the signal from
      the noise. <br>
      <br>
      ....but maybe in the next edition of the book, the words should be
      changed? :-) <br>
      <br>
      73s<br>
      Roger G3XBM<br>
      <br clear="all">
      <br>
      -- <br>
      <a moz-do-not-send="true" href="http://g3xbm-qrp.blogspot.com/"          target="_blank">http://g3xbm-qrp.blogspot.com/</a><br>
      <a moz-do-not-send="true" href="http://www.g3xbm.co.uk"          target="_blank">http://www.g3xbm.co.uk</a><br>
      <a moz-do-not-send="true" href="http://www.youtube.com/user/g3xbm"          target="_blank">http://www.youtube.com/user/g3xbm</a><br>
      <a moz-do-not-send="true"          href="https://sites.google.com/site/sub9khz/" target="_blank">https://sites.google.com/site/sub9khz/</a><br>
      <br>
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