Message-ID: <58822A0B.9080204@posteo.de>
Date: Fri, 20 Jan 2017 16:17:31 +0100
From: DK7FC <selberdenken@posteo.de>
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To: rsgb_lf_group@blacksheep.org
References: <0166BDF4-A692-4E83-AA17-DE6FC012EC1F@talktalk.net> <E7F5A41C84CB41B19EA9EC252D662A42@PCPMF> <877D570598134B12ADC67A8D874C9F32@AGB> <BC20A83130204F18AFD8F2E6D515BFE5@malcoHP> <23DE64E288C84B19B7C9212A6CADFBB8@PCPMF> <587E6B7A.6090204@posteo.de> <BN3PR1101MB1059F1E32221E309B072C9EACF7C0@BN3PR1101MB1059.namprd11.prod.outlook.com> <587E72D1.3080109@posteo.de> <BN3PR1101MB1059C5C899DDB2622A3A5CC3CF7C0@BN3PR1101MB1059.namprd11.prod.outlook.com> <587E9CEB.7010105@posteo.de> <alpine.DEB.2.11.1701180040570.642@mailn.lipkowski.org> <587EAE7E.8070607@posteo.de> <96a864da2bc335c77277487a4a1d9e0e@smtp.hushmail.com> <5881222D.9050002@posteo.de> <58813585.9000200@abelian.org> <58821669.2060604@posteo.de>
In-Reply-To: <58821669.2060604@posteo.de>
Subject: Re: LF: VLF/ULF activity weekend 21th/22th
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...sorry i just see that my frequency is 2970.000 Hz, not 2970.005 Hz as 
announced...

73, Stefan

Am 20.01.2017 14:53, schrieb DK7FC:
> Am 19.01.2017 22:54, schrieb Paul Nicholson:
>>
>> Looks good Stefan.  I'll be looking for your signals.
>
> Is there already a visible peak? The ERP is 2.8 uW. The carrier is now 
> running since almost 6 hours. I'm curious! Also it is interesting that 
> you can find optimised settings relative to 8270 Hz. I don't yet 
> understand why it should make a difference to duplicate the stream and 
> get and apply the blanker from and to different filter settings on the 
> separate channels. Exiting stuff to experiment with.
>
> BTW, it is always a bit strange to claim to do the first whatever 
> (records...), but a few years ago the computer technique was not as 
> developed to handle modes like 16K25A. So can we conclude that it was 
> _impossible_ to manage a message transfer over several 100 km on the 
> lower VLF ( < 10 kHz ) with such power levels?
>
> The PC causes a lot of phase glitches which are corrected immediately 
> but one can see a noise spectrum at -20 dBc :-/ I just didn't find the 
> time to prepare a better setup during the last days but i'm already 
> working on it...
>
> 73, Stefan

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...sorry i just see that my frequency is 2970.000 Hz, not 2970.005 Hz
as announced...<br>
<br>
73, Stefan<br>
<br>
Am 20.01.2017 14:53, schrieb DK7FC:
<blockquote cite="mid:58821669.2060604@posteo.de" type="cite">
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Am 19.01.2017 22:54, schrieb Paul Nicholson:
  <blockquote cite="mid:58813585.9000200@abelian.org" type="cite"><br>
Looks good Stefan.  I'll be looking for your signals. <br>
  </blockquote>
  <br>
Is there already a visible peak? The ERP is 2.8 uW. The carrier is now
running since almost 6 hours. I'm curious! Also it is interesting that
you can find optimised settings relative to 8270 Hz. I don't yet
understand why it should make a difference to duplicate the stream and
get and apply the blanker from and to different filter settings on the
separate channels. Exiting stuff to experiment with.<br>
  <br>
BTW, it is always a bit strange to claim to do the first whatever
(records...), but a few years ago the computer technique was not as
developed to handle modes like 16K25A. So can we conclude that it was <u>impossible</u>
to manage a message transfer over several 100 km on the lower VLF (
&lt; 10 kHz ) with such power levels?<br>
  <br>
The PC causes a lot of phase glitches which are corrected immediately
but one can see a noise spectrum at -20 dBc :-/ I just didn't find the
time to prepare a better setup during the last days but i'm already
working on it...<br>
  <br>
73, Stefan<br>
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