[Lowfer] Observation...

Tue, 29 Jan 2002 22:48:49 -0500

> I've noticed something similar. When I'm across the room (10-20 feet) away
the
> real time Argo (or captures) I'm displaying is much more readable.

I find the same thing with sound. As a matter of fact, I first copied WA
because I was listening for someone else and as I walked around the shack I
had spots where I swore I heard CW at a very high pitch. When I sat at the
rig, near the speaker or wearing the 'phones, I heard nothing but if I
walked around the room I hit "sweet spots" where I *KNOW* I heard cw.

A Lot of listening and tweaking later and I pulled out WA's signal.

Of course, it wasn't signing WA then. Bill didn't know better so it was
IDing as:
"If you hear this signal please call 617 555 1234" which took FOREVER in
QRSS120.

Mike
wa1ptc
----- Original Message -----
From: "Jay Rusgrove" <[email protected]>
To: <[email protected]>
Sent: Tuesday, January 29, 2002 8:04 PM
Subject: Re: [Lowfer] Observation...

> Mike
>
> I've noticed something similar. When I'm across the room (10-20 feet) away
the
> real time Argo (or captures) I'm displaying is much more readable. It must
have
> something to do with the eyes sensitivity to the extraneous white bits of
noise
> being less pronounced. I thought about writing to Alberto about this
asking for
> some sort of software mask or something. Figured he would think I was
nuts.
>
> Jay Rusgrove, W1VD
>
> Mike Staines wrote:
>
> > Thanks, Rye.
> >
> > I prefer to roll my own so I crafted up a perl script to do the same
thing.
> >
> > But thanks for the pointer.
> >
> > Now, another observation that is related to the display of the
> > "thumbnails"...
> >
> > When I was going through my captures from last night by looking at small
> > thumbnails I found that the signals could be very easily distinguished
from
> > the noise. When I expanded the capture to it's full size the contrast
> > (signal Vs noise) was less evident.
> >
> > Not sure if this effect is my eyes or the dither algorithm used by the
> > browser but I think I will take some of my weaker captures and see it I
can
> > improve things with some image processing.
> >
> > Mike
> > wa1ptc
> > ----- Original Message -----
> > From: "Rye Gewalt" <[email protected]>
> > To: <[email protected]>
> > Sent: Tuesday, January 29, 2002 6:30 AM
> > Subject: Re: [Lowfer] Observation...
> >
> > > Mike:
> > >
> > > I seem to see the same thing with some other interesting results
around
> > sunrise
> > > -- which the physics books seem to support (diurnal shift).  As I get
> > older I
> > > find that my personal diurnal shift occurs at about 3AM and sometimes
> > several
> > > times each night.....   But it gives me a chance to check Spectran
> > captures and
> > > adjust the receiving equipment.
> > >
> > > If you want to see postage stamp images that you can click for a
larger
> > view, I
> > > heartily recommend a program called Irfanview which is a freeware
program.
> > It
> > > will automatically make a thumbnail page in HTML showing all of the
images
> > in a
> > > file and then allow you to throw out those that you don't want and
save
> > the
> > > result.  You can also add notes to the bottoms of the images.
Everybody
> > who
> > > uses it loves it.  I suspect is it another labor of love like Spectran
and
> > Argo
> > > where the author just wants to share cool stuff.   Check:
> > >
> > > http://www.ryansimmons.com/users/irfanview/
> > >
> > > Regards
> > > Rye
> > >
> > >
> > >
> > > Mike Staines wrote:
> > >
> > > > OK, John.. Thanks.
> > > >
> > > > I usually find that all my DX shows up between 2:30 and 5:00 (at the
> > latest)
> > > > local time.
> > > >
> > > > I have captures for every 5 minutes or so and I am just finishing up
a
> > > > little web program so I can view most of them in one window then
select
> > (by
> > > > clicking) the ones I want to see full size.
> > > >
> > > > Mike
> > > > ----- Original Message -----
> > > > From: "John Andrews" <[email protected]>
> > > > To: <[email protected]>
> > > > Sent: Monday, January 28, 2002 11:54 PM
> > > > Subject: Re: [Lowfer] Observation...
> > > >
> > > > > Mike,
> > > > >
> > > > > > I set up argo captures of 166.5 for Sunday night. About 6:30 AM
> > (EST)
> > > > > Monday
> > > > > > morning, three signals started showing up on the freq. I have to
> > look
> > > > > > closely but I am sure I have BAT and, possibly NC. The third is
> > keyed
> > > > but
> > > > > I
> > > > > > cant make anything out of it.
> > > > > >
> > > > > > It is weird that I suddenly would get BAT after sunrise here in
New
> > > > > > Hampshire.
> > > > >
> > > > > Your sunrise is currently 7:02 AM. Enhanced propagation in the
hour
> > before
> > > > > sunrise has been pretty frequent here. BAT was still coming in
quite
> > well
> > > > > this morning at 7, but died shortly afterward.
> > > > >
> > > > > John A.
> > > > >
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