LF: 8969.9900Hz

[uwe-jannsen@kabelmail.de]

Markus, Stefan and all,

the TX will be switched on at 1310MEZ somewhat earlier as promised for late afternoon.
mode Op-4H using SpecLab GPS disziplined.
GL
Uwe/dj8wx

---

Von: rsgb_lf_group@blacksheep.org
Gesendet: 01.01.2014 02:58
An: rsgb_lf_group@blacksheep.org
Betreff: RE: VLF: 8970 Hz Op-4H

---

Congrats Markus and Stefan!

Great news, well done.

 

Am I interpreting correctly in the following?

17dB SNR with FFT bin width of ~ 69uHz, from ~~20uW ERP (9 meter antenna) at 175km?

 

I will be celebrating VLF Opera tonight.

 

Happy New Year,

 

Jim AA5BW

 

From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Joe
Sent: Tuesday, December 31, 2013 12:06 PM
To: rsgb_lf_group@blacksheep.org
Subject: AW: VLF: 8970 Hz Op-4H

 

Hi Markus, Stefan,

 

congrats to you, well done!

 

73 Joe

 

 

Von: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] Im Auftrag von Markus Vester
Gesendet: Dienstag, 31. Dezember 2013 19:15
An: rsgb_lf_group@blacksheep.org
Cc: Paul
Betreff: Re: VLF: 8970 Hz Op-4H

 

Stefan, we made it ;-))

 

DK7FC JN49IK VLF OPDS-4H correlation     Range: 8969.87 ... 8970.23 Hz
   date      time   call   distance  frequency bandwidth  snr    correlation
2013-12-31 18:07:58 DF6NM    175km   8970.000Hz   0mHz -58.3dBOp 100% 17.0dB

Wishing you all a very good start into 2014!

 

73, Markus (DF6NM)

 

From: Markus Vester

Sent: Tuesday, December 31, 2013 3:17 PM

To: rsgb_lf_group@blacksheep.org

Cc: Paul

Subject: VLF: 8970 Hz Op-4H

 

This morning I have reconnected the VLF amplifier and coil to the antenna, and started to transmit on 8970.000 Hz (Rb controlled). Sent a more or less uninterrupted carrier between 12:30 and 13:30, and have started an Opera-4H sequence at 13:41.

 

With 0.33 amps up to 9 m my estimated ERP would be around 20 uW. The carrier seems to be well visible on the OK2BVG grabber (up to 10 dB in "600"). I'm now trying to reach opds-4H at DK7FC but the SNR (10 dB for the carrier in "6000") may be just a bit marginal.   

 

Best 73,

Markus (DF6NM)