Message-ID: <001f01cc7234$ac7d7230$0401a8c0@xphd97xgq27nyf>
From: "mal hamilton" <g3kevmal@talktalk.net>
To: <rsgb_lf_group@blacksheep.org>
References: <4E6F70C2.8090206@iup.uni-heidelberg.de> <002e01cc722e$601ff170$4001a8c0@lark>
Date: Tue, 13 Sep 2011 16:46:23 -0000
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Subject: LF: Re: Re: low noise and OE5ODL
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Alan
Not much wrong with the HF bands, just worked VU2 (Indial) on 18 Mhz and hrd
JA, BV7, W9, and others.
also sigs on all bands up to 24.9 Mhz, hrd worked on CW
De Mal/G3KEV

----- Original Message -----
From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Tuesday, September 13, 2011 4:01 PM
Subject: LF: Re: low noise and OE5ODL


> Hi Stefan be careful with you appreciation of good conditions using the
> noise leevel!! The noise usually drops because it is not being propagated
so
> a low noise condition CAN be a state of poor propagation. I think that is
> the case at the moment. The CME associated with the X-Class flare pushed
the
> Dst down to -60nT and filled the Ring Current region with charge that will
> leak into the ionosphere over the following days. This increases the
> night-time absorption and reduces DX signal levels. A demo of this is to
> look at the levels recorded by Scott VE7TIL for a Russian BC station on
> 153kHz. This normally strong signal is depressed by 35 to 40dB at present.
>
> Alan G3NYK
> http://www.alan.melia.btinternet.co.uk/latest.htm
> "almost daily" propagation report for LF.
>
> ----- Original Message -----
> From: "Stefan Schäfer" <Stefan.Schaefer@iup.uni-heidelberg.de>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Tuesday, September 13, 2011 4:03 PM
> Subject: LF: low noise and OE5ODL
>
>
> > LF/VLF,
> >
> > Very low noise today on LF and VLF.
> >
> > Ossi/OE5ODL is QRV again, today on 8970.05 Hz, with the characteristic
> > drift. A good ID :-)
> >
> > Just found some time to build a LF preamp for the ferrite antenna. Maybe
> > someone has fun and time to make some acty on 137.7 in a hour or so?
> > Would like to compare signal levels and S/N of both, the 50 Ohm preamp
> > and the high-Z preamp in a quiet location.
> >
> > Screenshots will be posted here...
> >
> > Best 73, Stefan/DK7FC
> >
> > PS: Will run a QRSS-3 beacon on 137.730 kHz, using 0 V PA supply voltage
> > (i.e. no supply). There is a weak signal anyway, just because the FETs
> > gets switched! This signal is visible at DF6NM in the QRSS-60 window in
> > 174 km distance! ;-)
> >
>
>