Hello VLF enthusiasts,

I am interested in joining the VLF party. I have already tested a nice
audio amplifier which will produce 100W RMS on each channel and is
easy to bridge. I haven't given a lot of thought on the circuitry to
connect the sound card to some sort of active antenna. Are there any
suggestions on how to proceed? Also, are you using externally clocked
soundcards? I suppose, once you get into the uHz territory, having an
external super stable clock feeding the soundcard is a must?

73, Dimitris VK1SV



2011/10/20 Stefan Schäfer <[email protected]>:
> Hello Lubos,
>
> Excellent! We're looking forward to your signal :-)
>
> Just in time my VLF grabber
> (http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html) is
> available again, after a PSU failure... Hope it holds now.
> GPS lock is active and checked.
>
> Unfortunately the wind conds were not good in the last wekends so i still
> have to wait for my 12th exp...
>
> Good luck you Dreamer :-)
>
> 73, Stefan/DK7FC
>
> Am 19.10.2011 17:47, schrieb Lubos OK2BVG:
>
> Hello VLF!
> I will be testing my new Rubidium frequency reference tomorrow:
> ***INFO***
> Date: 20.10.2011
> Time: 08:00 UT - 11:00 UT
> Antenna: Marconi L 24m up + 220m top load
> PA: 120W
> Identification: K
> Mode: DFCW 3000
> FRQ: 8970.040 (+/- some few mHz :-)
> Shift: 10mHz
> I hope, the propagation will be good!
> Lubos, OK2BVG