Hi Lawrence, probably you could use the lowest-frequency alpha station for
calibration purposes.
I heard from Wolf that he was working on a built-in frequency calibration
tool for SpectrumLab but I don’t know about current progress.
I have so much noise at my sub-urban location that I have almost renounced
to receive something interesting below 10KHz. VLF gentlemen here in this group
suggested that I switch on a different solution that is to find a quieter place
far from civilization J A portable E-probe plus a digital
recorder should be a better setup for me in that case…
Cheers
D.
From:
[email protected] [mailto:[email protected]] On Behalf Of Laurence KL1X
Sent: giovedì 22 aprile 2010 17.09
To: [email protected]
Subject: RE: LF: vlf stuff
Stefan, Xtain, Danielle, Bob - thanks for the
comments -
On the QRM from the PC - no I dont get any (problematic) unless the loop is
within 3 metres or so of the loop - I have a 15m length of RG58 50 ohm
coax to the loop and the background iono/qrn masks any noise that I comes
from the unit - Ill take some screen shots and publish.
Even some 400m from the nearest power line I can see 60Hz harmonics and some
PLC stuff so Ill have to go out into the Plains a bit further.
The aim perhaps is to look for W1VLF or other signals (yourselves) sometime in
the future -
I did some VLF receiving stuff is Asia Pacfic countries over the past
few years - an example from China http://kl1x.com/vlfchina.jpg
and from the Polar regions some 30 years ago.
I didnt get a lot of time last night as I was getting bitten by
mosquitoes and was wearing short trousers but we had thunderstorms to
our West which spoilt any long distance reception -so much so that Alphas
werent visible - The normal US and some other VLF stations were good enough. Ill wait for a quieter
time and smother myself with "bug dope" but the loop/preamp was
producing good results (its very very quiet) -
I used the loop right next to the Television to calibrate the receiver
looking at the sync but I need to revisit this given some of the comments
about digital TV's.
Laurence KL 1 X in 5
bartlesville OK
http://kl1x.com
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