Re: VLF: Sunday morning test 8270.020 Hz

["PA1SDB, Peter" <pa1sdb@amsat.org>]

Hi Markus,

Unfortunately you where already QRT befor the propagation got better. You'r right, perhaps propagation to your direction is differend in relation between Uwe and my QTH.

If you take a look (in my grabber) at DJ8WX his signal and you's, there is not much difference.

Uwe is already running for such a long time, he leaves a impressive trace, but between 8 and 13 is his signal also weak at my QTH.

Perhaps it is possible for you to switch on a few hour between sunset and sunrise !

 

Best 73's, Peter.

 

 

 

----- Original Message -----

From: Markus Vester

To: rsgb_lf_group@blacksheep.org

Sent: Sunday, April 07, 2013 12:35 PM

Subject: Re: VLF: Sunday morning test 8270.020 Hz

Peter,

 

yes I was also wondering whether it was really me but now it's sure. I think I did have some samplerate tracking issues around 11 UT, but it looks good again now. Interestingly but perhaps unrelated, DHO went off air for a minute at 11:18.  

 

In the past we have observed that the diurnal propagatipon pattern depends on the phase between groundwave and ionospheric components, and thus on the distance between TX and RX. So it may well be different between you and Uwe, versus you and myself. Unfortunately I won't be able to transmit contiuously throughout day and night, and will have to go off air around 13 UT today.

 

Best 73, and thanks again,

 

Markus (DF6NM)

 

 

From: PA1SDB, Peter

Sent: Sunday, April 07, 2013 2:13 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: VLF: Sunday morning test 8270.020 Hz

Hello Markus, VLF

At first I was quite sure, but later in the morning I started to doubt whether I  did receive DF6NM.

Meanwhile, in the afternoon I really see the trail of DF6NM appear in the spectrogram.

As you can see in the traces of DJ8WX (in my grabber) the propagation is not good during daylight between us.

I hope you are able to stay on air for a while.

 

73s Peter

 

www.qsl.net/pa1sdb

 

 

 

 

 

 

 

----- Original Message -----

From: Markus Vester

To: rsgb_lf_group@blacksheep.org ; rsgb_lf_group@yahoogroups.co.uk

Sent: Sunday, April 07, 2013 9:02 AM

Subject: Re: VLF: Sunday morning test 8270.020 Hz

Great, it seems to work! DJ8WX had apparently interrupted his carrier for an hour but has come back. To my surprise, I seem to be making it to Appingedam as well

 http://www.ok2bvg.cz/vlfgrabber/

 http://www.qsl.net/pa1sdb/

 

Thanks to Lubos and Peter for monitoring and running your excellent online grabbers, and to Uwe for motivation and company!

 

Best 73,

Markus (DF6NM)

 

From: Lubos OK2BVG

Sent: Sunday, April 07, 2013 8:45 AM

To: _RSGB_LF

Subject: RE: VLF: Sunday morning test 8270.020 Hz

Hello Markus, VLF!

I am looking forward to see your signal on my grabber. It would be fine to see both signals, from  Uwe and you, together.  

73!

Lubos

---

From: markusvester@aol.com
To: rsgb_lf_group@blacksheep.org; rsgb_lf_group@yahoogroups.co.uk
Date: Sat, 6 Apr 2013 21:03:37 +0200
Subject: VLF: Sunday morning test 8270.020 Hz

This afternoon I have resonated the venerable seven-bucket VLF coil to my home antenna on 8.27 kHz, and I'm currently running a test transmission on 8270.020 Hz. Assuming appropriate weather conditions (ie no wind and rain, but cold and grey so that the neighbours won't want to enjoy their gardens and complain about the tone), I intend to join Uwe 5 mHz below his carrier, for a couple of hours starting sometime around 8 UT tomorrow. The signal will be weak (10 uW ERP) but I'm hoping to leave a trace in Lubos' grabber window.

 

Best 73,

Markus (DF6NM)

 

www.df6nm.de