[GreenKeys] RTTY Art JAVA Viewer Facelift

[Bob Camp]

Hi

I've been stuck at this point for about four months, so adding to the 
project may not be a good idea. However that's never stopped me before.

One thing that would be a *very* good idea would be to come up with a 
file format for this stuff. The world is more or less an 8 bit 
environment these days. We also don't seem to worry much about file 
sizes any more. I doubt that my living room full of tape would fill 
even a very old hard drive.

A couple of thoughts:

1) Just map the five level to the upper or lower five bits in the 8 bit 
word. The result is unprintable but it's easy.
2) Map it character for character. Use a standard alphabet and come up 
with a table. That makes for a readable result.
3) Since these are pictures - shoot it straight to graphics. I don't 
like this as much since you "loose" the original data.

If you do items 1 or 2 you still have to eventually get to stage 3. 
Simply having the data may not let you display it. Simply having it 
displayed here in the living room isn't the real objective. The idea is 
to share this stuff back out on the net.

What I would propose:

1) Come up with a standard file format (header, data, specific 
extension, what ever).
2) Write some command line code to take tapes in and spit the magic 
file out.
3) Come with a vewier in Java that will display the files. That way we 
get around the machine specific stuff.

Since items 1  and 2 sound like about 10 minutes each and item 3 sounds 
like about three man years I'll do numbers 1 and 2 if you'll do number 
3 ....

Of course a good start for number 3 would be a Windows program that 
would read the file ....

	Enjoy!

		Bob Camp
		KB8TQ




On Jan 17, 2005, at 1:54 AM, William Bytheway wrote:

> I am only a wizard with Windows MFC.  Best I could do with Linux is a
> console program, very dumb and command line oriented.  Never learned 
> Motif
> or XViews for Unix. You want the source for RTTYArt so you can build 
> your
> own Unix version?
>
> Bill
> K7TTY
>
> -----Original Message-----
> From: Bob Camp [mailto:ham at cq.nu]
> Sent: Sunday, January 16, 2005 1:42 PM
> To: William Bytheway; Greenkeys ((E-mail))
> Cc: George B. Hutchison
> Subject: Re: [GreenKeys] RTTY Art JAVA Viewer Facelift
>
>
> Hi
>
> Now all I have to do is find a Windows computer. They have been getting
> more and more scarce around here since I started moving over to various
> forms of Unix a few years ago.
>
> Anybody know of a Rtty Art program that runs under Linux 2.6 kernels?
>
> 	Thanks!
>
> 		Bob Camp
> 		KB8TQ
>
>
>
> On Jan 16, 2005, at 1:29 PM, William Bytheway wrote:
>
>>
>> The RTTYArt software I wrote takes 45 to 19.2 Baud, 5, 6, 7 and 8 
>> level
>> input directly from the UART, compatible with XP/NT/W98/W95.  Yes, the
>> standard 16450/16550 UART takes Baudot code very nicely. Standard
>> speeds
>> of 45, 50, 57, 74, 100, and 110 should work for what you need.
>>
>> If you can get the raw Baudot serial stream to the UART, the software
>> can capture it "in original form".  Unlike most terminal capture
>> programs,
>> it will not "rewrite" carriage returns and line feeds.  It also shows
>> what
>> you are capturing on a graphical display.
>>
>> RTTYArt was designed specifically 4 years ago for capturing paper tape
>> pictures to file.
>>
>>     http://www.rtty.com/development/software/
>>
>> An alternate site has been provided at:
>>
>>     http://207-207-72-42.ip.theriver.com/development/software/
>>
>> It was developed using a Hal ST-6 with RS-232 interface.  Convert your
>> current
>> loop to RS-232 voltage levels and feed the raw Baudot code into the
>> UART.
>> Not
>> sure if you will need to invert the voltage, depends on your 
>> interface.
>>
>> We are interested in pictures, old QST's and QSO's, anything of
>> historical
>> value to the RTTY group.
>>
>> Bill Bytheway
>> K7TTY
>>
>> -----Original Message-----
>> From: Bob Camp [mailto:ham at cq.nu]
>> Sent: Sunday, January 16, 2005 6:47 AM
>> To: William Bytheway; Greenkeys ((E-mail))
>> Subject: Re: [GreenKeys] RTTY Art JAVA Viewer Facelift
>>
>> Hi
>>
>> There are several tons of tape sitting here hostage . . . . <clip>
>>
>
>