[Yaesu] viewers

Tue, 15 Jan 2002 20:28:34 -0500

I use Paper Port to do my scanning and file conversion (Paper Port
originally came with my Visioneer Scanner).

Most small schematics need to be scanned with lots of DPI resolution.  I
seldom use less than 300 DPI.  I probably would scan my FT-990 main diagrams
at 600 DPI because they are so small.

JPEG is really lousy on schematics because it is a lossy compression system.
Most programs allow for the very large .BMP format, and most have some form
of TIFF file formats (.TIF).  TIFF can be stored uncompressed and
compressed.  A version of TIFF is used on most FAX machines at 100 x 200 DPI
resolution (or greater).  TIFF also supports multi-page documents which
programs like Irfan View handle really well.

I have not seen the problem which you mentioned below using JPEG files, but
I have seen this type of thing using some other programs.

Wilson Caselli, K1MIJ

----- Original Message -----
From: "Ralph Mowery" <[email protected]>
To: <[email protected]>
Sent: Tuesday, January 15, 2002 6:15 PM
Subject: [Yaesu] viewers

> I have been checking out a few ways to get some schematics scanned in
> and have not found a good format to use to get a small file size without
> loosing too much info.
>
> I like Irfan View also but have found out that if I try to blow up the
> jpg scanned in does not expand very clear.  If I use some other viewers
> then the same schematic looks very good when I enlarge it.  Have you
> noticed the same thing ?
>
>
> "Wilson A. Caselli" wrote:
> >
> > You would be better off to use a lossless compression method like .GIF
file
> > compression or LuraWave .LWF, or any other lossless method.  JPEG just
> > doesn't cut the mustard with schematics.
> >
> > I also love Irfan View.
> >
> > Wil, K1MIJ
> >
> > ----- Original Message -----
> > From: "Bayard Fox" <[email protected]>
> > To: <[email protected]>
> > Sent: Sunday, January 13, 2002 11:30 PM
> > Subject: Re: [Yaesu] FT-5100 Schematic - 100 Pages?
> >
> > > Why not save the .bmp as a .jpg?  This will reduce its size quite a
bit.
> >
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