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The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Bob, There are no more band slots left in the psk-map , we have used them all up , so your flying solo on this one ! Could be a job for Op4H , but the decoder is set to 8K .....not a problem for a SDR , set up , racal 6790gm has a synth bfo that can be set 8K off , don't know what other sets are about with that kind of bfo range [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.29 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 5f3d51ad98dd7d967f54e1b86b99caac Subject: Re: LF: Would slower QRSS help? Content-Type: multipart/alternative; boundary="----=_NextPart_000_0164_01CF364F.8B24BA30" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=2.0 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MAILTO_TO_SPAM_ADDR,MISSING_OUTLOOK_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false This is a multi-part message in MIME format. ------=_NextPart_000_0164_01CF364F.8B24BA30 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bob, There are no more band slots left in the psk-map , we have = used them all up , so your flying solo on this one !=20 Could be a job for Op4H , but the decoder is set to 8K .....not = a problem for a SDR , set up , racal 6790gm has a synth bfo = that can be set 8K off , don't know what other sets are about = with that kind of bfo range=20 I think Spec-Lab has a frequency convertor mode , never used = it , not sure how the interface is configured , but if that can = get the audio from say 1500 hz upto 8KHz in software , then = that opens up some possibilities=20 73-G,=20 From: Bob Raide=20 Sent: Sunday, March 02, 2014 7:25 PM To: rsgb_lf_group@blacksheep.org=20 Subject: RE: LF: Would slower QRSS help? Paul; Jay and Stefan and you suggested I should transmit carrier for 1 hour on = 29.49900 then move up 10 MHz [29.49901] for hour and back again a few = times and then will start QRSS180. Does that make sense? Bob =20 > Date: Sun, 2 Mar 2014 19:06:37 +0000 > From: vlf0403@abelian.org > To: rsgb_lf_group@blacksheep.org > Subject: Re: LF: Would slower QRSS help? >=20 > > I will be running in QRSS 180 tonight. >=20 > Good luck. After last night's test maybe a few more receivers > will be listening on 29499 Hz. I'm sure this signal will go > a lot further than UK. It counts as a strong signal here > and there is 10 or 20dB or more (depending on rx bandwidth) > in hand to reach further into Europe. >=20 > More plots: a graph of signal level and phase, 10 minute > averages stepping 5 minutes. >=20 > http://abelian.org/vlf/tmp/29499_140302k.gif >=20 > The background noise is plotted after sferic blanking. >=20 > On the spectrogram it looks like the noise tails off more > sharply between 04:00 and 04:30 but when I actually plot > the noise it's a quite smooth decline. But the signal is > gradually coming up hence the appearance of a 'window' in the > 2 or 3 hours before dawn. >=20 > For comparison, NAA at 24kHz during the same period >=20 > http://abelian.org/vlf/tmp/29499_140302m.gif >=20 > Some pronounced dips during the night at 29499 Hz don't appear > in the NAA record. >=20 > -- > Paul Nicholson > -- >=20 ------=_NextPart_000_0164_01CF364F.8B24BA30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bob,
 
There  are  no  more   = band =20 slots  left  in the  psk-map , we  have used = them =20 all  up  , so  your  flying  solo  on = this =20 one  !
 
Could be  a  job  for  Op4H = , =20 but the  decoder is  set to  8K .....not  a = problem =20 for   a  SDR  , set  up  ,  racal=20 6790gm   has a  synth  bfo  that  can = be =20 set  8K off  , don't  know  what  other =20 sets  are  about  with  that  kind  = of =20 bfo  range
 
I think  Spec-Lab    has = a =20 frequency   convertor  mode , never  used  = it  ,=20 not  sure  how the  interface  is  configured , = but  if that  can get the  audio   from  = say=20 1500  hz  upto  8KHz  in software  , then  = that  opens    up some  possibilities
 
73-G,

From: Bob Raide
Sent: Sunday, March 02, 2014 7:25 PM
Subject: RE: LF: Would slower QRSS help?

Paul;
Jay and Stefan and you suggested I = should=20 transmit carrier for 1 hour on 29.49900 then move up 10 MHz [29.49901] = for hour=20 and back again a few times and then will start QRSS180.  Does that = make=20 sense? Bob
 
> Date: Sun, 2 Mar 2014 19:06:37 +0000
> From: vlf0403@abelian.org
> To: = rsgb_lf_group@blacksheep.org=
>=20 Subject: Re: LF: Would slower QRSS help?
>
> > I will be = running=20 in QRSS 180 tonight.
>
> Good luck. After last night's test = maybe a=20 few more receivers
> will be listening on 29499 Hz. I'm sure this = signal=20 will go
> a lot further than UK. It counts as a strong signal = here
>=20 and there is 10 or 20dB or more (depending on rx bandwidth)
> in = hand to=20 reach further into Europe.
>
> More plots: a graph of = signal level=20 and phase, 10 minute
> averages stepping 5 minutes.
> =
>=20 http://abelian.org/vlf/tmp/29499_140302k.gif
>
> The = background=20 noise is plotted after sferic blanking.
>
> On the = spectrogram it=20 looks like the noise tails off more
> sharply between 04:00 and = 04:30 but=20 when I actually plot
> the noise it's a quite smooth decline. But = the=20 signal is
> gradually coming up hence the appearance of a 'window' = in=20 the
> 2 or 3 hours before dawn.
>
> For comparison, = NAA at=20 24kHz during the same period
>
>=20 http://abelian.org/vlf/tmp/29499_140302m.gif
>
> Some = pronounced=20 dips during the night at 29499 Hz don't appear
> in the NAA=20 record.
>
> --
> Paul Nicholson
> --
>=20
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