References: <C40FF218-20A6-4F34-9190-3D9B94C5EF5C@arimi.it> <50240D07.9030208@iup.uni-heidelberg.de>
From: IZ2JGB <iz2jgb@arimi.it>
In-Reply-To: <50240D07.9030208@iup.uni-heidelberg.de>
Message-Id: <64A4DF44-1877-42FB-9D3B-074D8E3D7508@arimi.it>
Date: Fri, 10 Aug 2012 00:14:35 +0200
To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
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Subject: Re: LF: Grabber
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Ciao,

Ok for The rx, i'll start with The vlf, i've
Got a nice edirol soundcard that samples up to 24 bit/96 khz.

I'll need some help in configuring spectrum lab since i'm a beginner in that=
 field.

The network, website and ftp are ready.

Regarding the sked i need The help of=20
Giulio I2FGT Because i'm a donkey in
CW ... But we can set it up. And hopefully i'll learn , sooner or later.

Thanks,
Giorgio



Inviato da iPhone

Il giorno 09/ago/2012, alle ore 21:18, Stefan Sch=C3=A4fer <Stefan.Schaefer@=
iup.uni-heidelberg.de> ha scritto:

> Hello Giorgio,
>=20
> This is very good news. I'm looking forward to your progress.
>=20
> BTW many MF stations would be happy to have a CW sked on MF with IQ2MI, if=
 possible :-)
>=20
> For MF i have built a DC receiver but it is still not optimised because th=
e band is still splitted. If i would optimise the filters then i would have n=
o chance to receive stations on 502 kHz or on 501.3 kHz :-) So that, and the=
 publication of the final schematic, has to wait a bit.
>=20
> It depends on what is your goal: Simply having a receiver that does the jo=
b or the goal to have a completely homemade receiver. If you only want to re=
ceive then one of the new cheap SDR receivers will be an easy solution. A fr=
ontend has to be added though. Others may have better advice on that.
>=20
> For 137 kHz i'm using this RX: https://dl.dropbox.com/u/19882028/LF/DK7FC%=
20LF-p%20RX%20converter.jpg
> G4WGT is using a modification of that circuit on his grabber. And there is=
 the kit of JA8SCD,http://icas.to/e/ The IDC-136 is used by TF3HZ and YV7MAE=
 for example.
>=20
> For VLF you already have a receiver, your soundcard! Here you only need to=
 connect an antenna. I'm using this one http://www.iup.uni-heidelberg.de/sch=
aefer_vlf/8,97kHz%20active%20E%20field%20antenna%20by%20DK7FC.jpg
>=20
> 73, Stefan/DK7FC
>=20
>=20
> Am 09.08.2012 17:45, schrieb IZ2JGB:
>> Hello group!
>>=20
>> After The esperiment with The 500khz
>> IQ2MI beacon it's now time to build a suitable receiver / grabber.
>>=20
>> I'll like to start with The 480 / 500 khz,
>> Then adding The 137 and maybe
>> The vlf ( 0 - 20 )
>>=20
>> Any good / new ideas to start with ?
>>=20
>> Thanks
>> IZ2JGB
>> Giorgio
>>  =20
>=20