Tnx Jay, Uwe, Jean-Louis, group,
Jay, that sounds to be a good RX concept. You do not have a band pass filter in
the preamp? What about the 50Hz or 60Hz ;-) lines and the levels they generate
at your RX imput? No problem? Well decoupled by the transformer? Sounds easy
and at once to be built...
On that VLF SDR, the russian transmitter at 11,904kHz is really weak to copy :-(
73, Stefan
________________________________
Von: [email protected] im Auftrag von [email protected]
Gesendet: Do 25.02.2010 13:37
An: [email protected]
Betreff: LF: Re: VLF test signals?
Stephan
>Which commercial VLF transmitters can actually be received in the 10kHz range?
The Alpha stations on 11.9, 12.7 and 14.9 kHz are visible (cw speed waterfall)
and audible here a
good percentage of the time. Receiving setup is 1 meter e probe (J310 version
of the Amrad e probe,
battery powered and transformer decoupled) to a Perseus SDR receiver.
Jay W1VD WD2XNS WE2XGR/2
----- Original Message -----
From: "Stefan Schäfer" <[email protected]>
To: <[email protected]>
Sent: Thursday, February 25, 2010 6:58 AM
Subject: LF: VLF test signals?
Which commercial VLF transmitters can actually be received in the 10kHz range?
There is much listed
in the web but in times where these transmitters are shut down all this may be
already old stuff.
Who is receiving in this frequency region and can tell us a frequency and the
SNR he is achieving?
There are so many OMs who watch the VLF sector and have nothing done with LF
and this group. Perhaps
it it an idea to activate/motivate them for some tests, to increase the RXers
density.
Maybe it is good to compare some RX rprts in that region. But i will rather be
active at the
transmitters front now ;-)
Stefan/DK7FC
<<winmail.dat>>
|
