Re: LF: QRSS120 and grabbers

[Stefan Schäfer <schaefer@iup.uni-heidelberg.de>]

If someone starts to become on LF (or on any band) he cannot move 
backwards! Each litte experiment (like resonating an antenna) is a 
success! Reaching the neighbour in 3 km distance is a great success! No 
need to compete with others! The personal success counts and everyone 
can define for him selfe what a personal success means!
In 2002 i run a marathon (42.195 km) in 4:13 h:mm. How stupid would i am 
if i would say "Even before 10s of years others run it 2 hours faster so 
its no success"??????
Stefan/DK7FC



Am 01.12.2010 20:16, schrieb mal hamilton:
> Listen to experience and avoid moving backwards. Historically lots of
> records have been achieved this past several years on LF. I would encourage
> you and others to build on this experience and do something outstanding.
> You ought to be congratulated with your advancement on the Touch 4g
> technology.
> de mal/g3kev
>
> ----- Original Message -----
> From: "Roger Lapthorn"<rogerlapthorn@gmail.com>
> To:<rsgb_lf_group@blacksheep.org>
> Sent: Wednesday, December 01, 2010 6:09 PM
> Subject: Re: LF: QRSS120 and grabbers
>
>
> So why not QSY somewhere else in the spectrum Mal and teach yourself
> something new? Some of us here are still learning on LF for the first time,
> and can do without your "help".
>
> Roger G3XBM
>
> Sent from my iPod Touch 4g
>
> On 1 Dec 2010, at 17:06, "mal hamilton"<g3kevmal@talktalk.net>  wrote:
>
>    
> > I have some nice pics of my signal a few years back being received TA at
> > QRS 3 on 137 Kcs also 500 Kcs last year.
> > also NC1K was able to copy G3KEV and MM0ALM on normal CW in the past.
> > When there was an abundance of acty on 137 a few years ago I could copy
> >      
> the
>    
> > USA stations on QRS1 and normal CW.
> > For those serious about TA qso's a well engineered station and elevated
> > antenna will do the trick without a struggle. There is no need for QRS
> > slower than 30 sec dot.
> > VE1JG was a big player in the past along with VE1ZZ and both  able to copy
> > my CW
> > Many TA QSO'S have taken place in the past when there was lots of acty
> >      
> from
>    
> > the UK in particular. and I have made dozens of contacts especially around
> > this time of year. In the early days the USA had to reply xband usually
> >      
> for
>    
> > me on 7 Mcs because they did not have a permit for 137
> > At the present time some seem to be RE-INVENTING the wheel, obviously not
> > reading past history about LF.
> > de Mal/G3KEV
> >
> >
> > ----- Original Message -----
> > From: "Stefan Schäfer"<Stefan.Schaefer@iup.uni-heidelberg.de>
> > To:<rsgb_lf_group@blacksheep.org>
> > Sent: Wednesday, December 01, 2010 4:06 PM
> > Subject: Re: LF: QRSS120 and grabbers
> >
> >
> >      
> > > Hi Mike,
> > >
> > > Yes, some thoughts:
> > >
> > > Am 01.12.2010 15:36, schrieb Mike Dennison
> > >        
> > > > I believe the danger is to regard this as the 'optimum' speed for DX
> > > > working, simply because the S/N ratio is good.
> > > >          
> > > Is that really a danger?
> > >        
> > > >   In practice, there is
> > > > another factor in play. There is often rapid and deep fading on a DX
> > > > path, often resulting in only parts of letters being received at this
> > > > speed, even though the peak signal is quite strong (see many of the
> > > > pictures of transatlantic reception regularly posted on this group).
> > > >
> > > > The situation becomes worse if the final aim of experimenting with a
> > > > path is to have a two-way DX QSO. Even exchanging minimal
> > > > information, a QSO will take several hours, during which time the
> > > > conditions must hold up.
> > > >          
> > > When was the last real QSO done in QRSS>= 30? I rember the contact
> > > between VE7TIL and JA7NI but most of the active people are just
> > > transmitting a character (representing their callsign) in beacon mode. I
> > > have never seen a "CQ ... K" in 60 or 120.
> > > So if one just wants to transmit a beacon signal it doesn't matter if
> > > there is some QSB. As an example, XGJ is monitored very often most of
> > > the nights. If the G would be lost (X_J)and in the next turn the J would
> > > be lost (XG_), anyway everbody would know it't (XGJ). Furthermore the DX
> > > interested OMs gets the confirmation on the other grabbers.
> > > If a QSO is wanted, i fully agree with your opinion. But a QSO means
> > > that both stations are sitting in front of the PC, so they can change
> > > the RX to the wanted QRSS/DFCW mode.
> > > Anyway, i am providing both QRSS-60 and QRSS-120 for TA and EU, so
> > > people may chosse what they like :-)
> > >        
> > > > Take a look at VE7TIL's excellent DCF39
> > > > graph to see how short a good DX opening usually is - perhaps an hour
> > > > if you are lucky.
> > > >          
> > > ...which wouldn't be enough for a (real) QSO in QRSS-60 but enough for
> > > "FC" or "NM" or "NI" in QRSS-120.
> > >        
> > > > The very few who have had transatlantic QSOs have used QRSS30 or at
> > > > most QRSS60. I am not aware of a successful two-way involving a
> > > > longer dot length.
> > > >
> > > > I would suggest that DX beacons and grabbers use a =maximum= of 60s
> > > > dot length (though a second grabber screen could be provided for 120
> > > > etc if desired). In my opinion this would be more likely to result in
> > > > useful propagation data.
> > > >
> > > >          
> > > Done.
> > >        
> > > > Any thoughts?
> > > >
> > > > Mike, G3XDV
> > > > ==========
> > > >
> > > >          
> > > 73, Stefan
> > >
> > >        
> >      
>