Message-ID: <001301cc1e4d$f8a37a00$0401a8c0@xphd97xgq27nyf>
From: "mal hamilton" <g3kevmal@talktalk.net>
To: <rsgb_lf_group@blacksheep.org>
References: <1306697738.1967.9.camel@gerhard-desktop> <002801cc1e38$c42eb920$0401a8c0@xphd97xgq27nyf> <1306699091.1967.20.camel@gerhard-desktop>
Date: Sun, 29 May 2011 23:15:51 +0100
MIME-Version: 1.0
Subject: Re: LF: Re: OE3GHB Grabbers
Content-Type: text/plain;
	charset="UTF-8"
Content-Transfer-Encoding: 7bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


Gerhard
Not too many Fish or you will start to grow Fins and a Tail
Too many protection diodes across the FET will Degrade the performance, a
Tube amplifier would be better. Commercial radio stations used to use the
807 tube.
mal/g3kev

----- Original Message -----
From: "Gerhard Hickl" <gerhard.hickl@aon.at>
To: <rsgb_lf_group@blacksheep.org>
Sent: Sunday, May 29, 2011 8:58 PM
Subject: Re: LF: Re: OE3GHB Grabbers


> Hey Mal!
>
> Thank you for the hint. I already prepared for the big EMP by buying
> some canned fish and water in bottles!!!!!!!
>
> Do you think a C3M-tube would be suitable? I have got plenty of
> them.....
>
>
> 73
> Gerhard
>
>
>
> Am Sonntag, den 29.05.2011, 20:44 +0100 schrieb mal hamilton:
> > Gerhard
> > Be prepared for the Big EMP and use a tube preferably a 4CX1500 instead
of
> > FET preamps.
> > g3kev
> >
> > ----- Original Message -----
> > From: "Gerhard Hickl" <gerhard.hickl@aon.at>
> > To: <rsgb_lf_group@blacksheep.org>
> > Sent: Sunday, May 29, 2011 8:35 PM
> > Subject: LF: OE3GHB Grabbers
> >
> >
> > > Hello group!
> > >
> > > Both of my grabbers for LF and VLF are working normally again since
> > > yesterday evening. After a distant thunderstorm last week, the VLF
> > > grabber failed because of a damaged FET in the first stage of the
> > > E-Probe.
> > >
> > > I replaced the transistor and added three protecting diodes into the
> > > first stage. I hope this will solve the problem definitely.
> > >
> > > The LF-grabber which was not affected got stuck last Friday evening
when
> > > the PC which is running all the instances of SpecLab hang. This also
> > > happened because of a local thunderstorm. So you see, on LF and VLF
> > > there are many other challenges beside propagation and noise.....
> > >
> > > LF:
> > > members.aon.at/grabber
> > >
> > > VLF:
> > > members.aon.at/grabber/VLF
> > >
> > > 73
> > > OE3GHB
> > > Gerhard
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>