Date: Thu, 22 Dec 2011 13:00:28 +0100
From: "manginbenoit.pro" <manginbenoit.pro@laposte.net>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: Re: LF/MF X-Band Request
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GA John,

Indeed an air core multiturn loop proves its sensitivity, at least on paper=
. Plus, the=20
directional nulling possibilities do really interest me.

But X-Banding with Mal's or Stefan's LF signals can surely be done via a si=
mple=20
miniwhip. But s!:;!: happens, sometimes.

RXing definetely suffers from something nasty here, as I did not even hear =
a friend of=20
mine's MF tests last night, although an hour and a half before IQ2MI was cl=
early=20
audible.

The whip's preamp must have not appreciated something in between the two re=
ception=20
attempts. Or maybe is it the SDR. By the way, I will try to hear something =
with the=20
FT897 and LF/MF converter tonight. If OK, the SDR must be the failing link.

73,
de F8GRY/Ben


> Message du 22/12/11 12:11
> De : "John Rabson"=20
> A : rsgb_lf_group@blacksheep.org
> Copie =C3=A0 :=20
> Objet : Re: LF: Re: LF/MF X-Band Request
>
> Ben,
>=20
> On receive it is the SNR that matters. It is a good idea to have a loop (=
preferably=20
rotatable) as well as a long wire, so you can choose which gives better rec=
eption.=20
>=20
> I have found a 2x 2 metre air-cored loop very effective for receive on 13=
7.=20
>=20
> 73
> John F5VLF
>=20
> On 22 Dec 2011, at 11:19CET, mal hamilton wrote:
>=20
> > Hi Ben
> > RX antennas seem to be the problem for most. A very effective antenna i=
s a
> > piece of insulated wire as long and as high as possible resonated for t=
he
> > frequency of interest and a good sensitive RX. All other types of small
> > antennas ie ferrite rods, micro probes, etc are alright for receiving
> > broadcast high power stations or amateur QRSS acty but poor for CW
> > reception.
> > I have noticed EU stn on LF can only work their neighbours using QRS be=
cause
> > of poor RX antennas, not enough sensitivity for CW.
> > Sending out a Beacon is the easy part but conducting a cw QSO is a diff=
erent
> > ball game.
> > Hope you get yours fixed
> > mal/g3kev
> >=20
> >=20
> > ----- Original Message -----
> > From: "manginbenoit.pro"=20
> > To:=20
> > Sent: Thursday, December 22, 2011 9:08 AM
> > Subject: Re:LF: Re: LF/MF X-Band Request
> >=20
> >=20
> > GM Mal,
> >=20
> >=20
> > That's actually the case. RX problem still here. I heard a signal in th=
e
> > noise, tried
> > to dig it out, but did not success.
> >=20
> > Your signal should not be so hard to copy from this QTH.
> >=20
> > Now QRT too, trying to solve the thing.
> >=20
> > TNX trying. I'll post later on abt problem solving and back on trafic.
> >=20
> > de F8GRY/Ben
> >=20
> >=20
> >> Message du 22/12/11 09:53
> >> De : "mal hamilton"
> >> A : rsgb_lf_group@blacksheep.org
> >> Copie =C3=A0 :
> >> Objet : LF: Re: LF/MF X-Band Request
> >>=20
> >> Om
> >> You seem to be on BEACON MODE and not listening.
> >> I have called you but you are not responding or your RX/ANTENNA is not
> >> working
> >> Now QRT here
> >> de G3KEV
> >>=20
> >> ----- Original Message -----
> >> From: "manginbenoit.pro"
> >> To:
> >> Cc: "rcf5kmb googlegroups com"
> >> Sent: Thursday, December 22, 2011 8:10 AM
> >> Subject: LF: LF/MF X-Band Request
> >>=20
> >>=20
> >> GM All,
> >>=20
> >> Starting CQing X-Band on 7022, QSX 136.500, seems the SDR is in better
> >> health now.
> >>=20
> >> de F8GRY/Ben
> >>=20
> >> Une messagerie gratuite, garantie =C3=A0 vie et des services en plus, =
=C3=A7a vous
> >> tente ?
> >> Je cr=C3=A9e ma bo=C3=AEte mail www.laposte.net
> >>=20
> >>=20
> >>=20
> >>=20
> >=20
> > Une messagerie gratuite, garantie =C3=A0 vie et des services en plus, =
=C3=A7a vous
> > tente ?
> > Je cr=C3=A9e ma bo=C3=AEte mail www.laposte.net
> >=20
> >=20
> >=20
> >=20
>=20
>=20
>=20

Une messagerie gratuite, garantie =C3=A0 vie et des services en plus, =C3=
=A7a vous tente ?
Je cr=C3=A9e ma bo=C3=AEte mail www.laposte.net