From: Rob Renoud <k3rwr@md.metrocast.net>
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Date: Sat, 19 Jan 2019 17:07:15 -0500
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References: <CAL-VeeMHmAWKyyaEkYLw+FgQuikE5VVPwrNdnPSvB4AcVw+K7A@mail.gmail.com> <CAL-VeeNA73-H+DOPdDeQ2H+74_F9Tv5gFp6psTXtUVEKWWuv_Q@mail.gmail.com> <1UTCMpy6DA.3Qa4W73pIAl@optiplex980-pc> <CANA3B6WHXd47Q60hxEodG9AdquBTZZw6PpgmxQ5Wt6H+2dQwEw@mail.gmail.com> <1UTCMwovFO.7Td6s5SXdvV@optiplex980-pc>
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To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: EbNaut
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Riccardo,

I will also be listening tonight.  Bandwidth  +/- 2 Hz centered on 137545 Hz=
.

73 & GL,
Rob - K3RWR

> On Jan 19, 2019, at 16:43, "jrusgrove@comcast.net" <jrusgrove@comcast.net>=
 wrote:
>=20
> Riccardo
> =20
> Will be checking for decodes. Bandwidth here +/- 3 Hz centered on 137545 s=
hould others care to join in. A winter storm is moving into the area with sn=
ow, freezing rain, sleet and the possibility of significant icing. Fingers c=
rossed that reception is not adversely affected.    =20
> =20
> Jay W1VD=20
> =20
> =20
> ----- Original Message -----
> From: Riccardo Zoli <riccardozoli80@gmail.com>
> Reply-To: <rsgb_lf_group@blacksheep.org>
> To: LF Group <rsgb_lf_group@blacksheep.org>
> Sent: 1/19/2019 3:50:50 PM
> Subject: Re: LF: EbNaut
>=20
> Hi Jay and all LF EbNauters,
>=20
> Many thanks for your reports and suggestions.
> And many thanks Jay for your efforts. Yes, indeed: so I'll try tonite with=
 a half of symbol duration, pratically the same parameters used in my transm=
issions on 14/15 Nov. 2018:
>=20
> QRG: 137545 Hz
> Coding 8K19A
> CRC 16
> 3 sec./sym.
> 6 characters
> Duration: 28 min.
> every 30 minutes, 1st transmission on 2100 UTC, last on 0700 UTC.
>=20
> Reports are welcome as usual...
>=20
>=20
> All the best
>=20
> 73 de Riccardo IW4DXW
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
> Il giorno Sab 19 Gen 2019, 12:36 jrusgrove@comcast.net <jrusgrove@comcast.=
net> ha scritto:
>> Alex, Riccardo & EbNaut-eers
>> =20
>> Unfortunately no copy of either station last night. Alex ... understand y=
our TX frequency may have been moving around.
>> =20
>> I wonder if a 1 hour transmission is too long for 137 kHz? Recalling spec=
trograms of QRSS going back many years seems to indicate a QSB pattern of ap=
proximately 15 - 30 minutes. Both receptions of IZ7SLZ and IW4DXW (a while b=
ack) were 'one and done' with no hint of the signal in adjacent time slots .=
.. using 30 minute transmission times. Even DK7FC's normally big signal show=
s big QSB swings from one half hour period to the next. Can't help but wonde=
r if 20 or 30 minute transmission periods make better use of the QSB charact=
eristics on 136 kHz.
>> =20
>> Comments?
>> =20
>> Jay W1VD     =20

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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">Riccardo,</div><div dir="ltr"><br></div><div dir="ltr">I will also be listening tonight. &nbsp;Bandwidth &nbsp;+/- 2 Hz centered on 137545 Hz.</div><div dir="ltr"><br></div><div dir="ltr">73 &amp; GL,</div><div dir="ltr">Rob - K3RWR</div><div dir="ltr"><br>On Jan 19, 2019, at 16:43, "<a href="mailto:jrusgrove@comcast.net">jrusgrove@comcast.net</a>" &lt;<a href="mailto:jrusgrove@comcast.net">jrusgrove@comcast.net</a>&gt; wrote:<br><br></div><blockquote type="cite"><div dir="ltr">


<meta name="GENERATOR" content="MSHTML 11.00.9600.18450">

<div>Riccardo</div>
<div>&nbsp;</div>
<div>Will be checking for decodes. Bandwidth here +/- 3 Hz centered on 137545 should&nbsp;others care to join in.&nbsp;A winter storm is moving into the area&nbsp;with&nbsp;snow,&nbsp;freezing rain, sleet and the possibility of significant icing. Fingers crossed that&nbsp;reception is not adversely affected.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</div>
<div>&nbsp;</div>
<div>Jay W1VD&nbsp;</div>
<div>&nbsp;</div>
<div>&nbsp;</div>
<blockquote style="PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0.5em; MARGIN: 0px 0px 0px 0.5em; BORDER-LEFT: #c7e5ff 1px solid; PADDING-RIGHT: 0px">
<div><b>----- Original Message -----</b></div>
<div><b>From:</b> Riccardo Zoli &lt;<a href="mailto:riccardozoli80@gmail.com">riccardozoli80@gmail.com</a>&gt;</div>
<div><b>Reply-To:</b> &lt;<a href="mailto:rsgb_lf_group@blacksheep.org">rsgb_lf_group@blacksheep.org</a>&gt;</div>
<div><b>To:</b> LF Group &lt;<a href="mailto:rsgb_lf_group@blacksheep.org">rsgb_lf_group@blacksheep.org</a>&gt;</div>
<div><b>Sent:</b> 1/19/2019 3:50:50 PM</div>
<div><b>Subject:</b> Re: LF: EbNaut</div>
<hr style="BORDER-TOP: medium none; HEIGHT: 1px; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; COLOR: #ccc; BORDER-LEFT: medium none; BACKGROUND-COLOR: #ccc">

<div>
<div><br></div>
<div>Hi Jay and all LF EbNauters,</div>
<div><br></div>
<div>Many thanks for your reports and suggestions.</div>
<div>And many thanks Jay for your efforts. Yes, indeed: so I'll try tonite with a half of symbol duration, pratically the same parameters used in my transmissions on 14/15 Nov. 2018:</div>
<div><br></div>
<div><b>QRG: 137545 Hz</b></div>
<div><b>Coding 8K19A</b></div>
<div><b>CRC 16</b></div>
<div><b>3 sec./sym.</b></div>
<div><b>6 characters</b></div>
<div>Duration: 28 min.</div>
<div>every 30 minutes, 1st transmission on 2100 UTC, last on 0700 UTC.<br></div>
<div><br></div>
<div>Reports are welcome as usual...</div>
<div><br></div>
<div><br></div>
<div>All the best</div>
<div><br></div>
<div>73 de Riccardo IW4DXW</div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div><br><br>
<div class="gmail_quote">
<div dir="ltr">Il giorno Sab 19 Gen 2019, 12:36 <a href="mailto:jrusgrove@comcast.net" rel="noreferrer noreferrer" target="_blank">jrusgrove@comcast.net</a> &lt;<a href="mailto:jrusgrove@comcast.net" rel="noreferrer noreferrer" target="_blank">jrusgrove@comcast.net</a>&gt; ha scritto:<br></div>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div class="m_-2421619824143885426m_6199151934480157154m_5406829222246077191OECFntDef">
<div>Alex, Riccardo &amp; EbNaut-eers</div>
<div>&nbsp;</div>
<div>Unfortunately no copy of either&nbsp;station last night. Alex ... understand&nbsp;your TX frequency may have been moving around.</div>
<div>&nbsp;</div>
<div>I wonder if a 1 hour transmission&nbsp;is too long for 137 kHz?&nbsp;Recalling spectrograms of QRSS going back many years seems to indicate a QSB pattern of approximately 15 - 30 minutes. Both receptions of IZ7SLZ and IW4DXW (a while back) were 'one&nbsp;and done' with no hint of the signal in adjacent time slots ... using 30 minute transmission times.&nbsp;Even&nbsp;DK7FC's&nbsp;normally big signal shows big QSB swings from one half hour period to the next. Can't help but wonder if 20 or 30 minute transmission periods make better use of the QSB characteristics on 136 kHz.</div>
<div>&nbsp;</div>
<div>Comments?</div>
<div>&nbsp;</div>
<div>Jay W1VD&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</div></div></blockquote></div></div></blockquote>
</div></blockquote></body></html>
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