[GreenKeys] Printing punched tape on my model 15 is FIXED!!!

Don Robert House Packard42 at gmail.com
Tue Apr 26 02:10:06 EDT 2011


Good news Derek,

As my boss at Illinois Bell used to say... "Everything is easy once  
you know how"
Trite but true.

73,
Don
K9TTY


On 25 Apr 2011, at 11:57 PM, Derek Cohn/WB0TUA wrote:

Hi Guys,

Thanks to the members of the list, my problem is solved.   
Unfortunately, the problem was between my ears.

I did another test and ran the output of ITTY to my Model 15 and got  
perfect printing....here is the sample:

http://www.mindspring.com/~vibroplex/tty_problem4.jpg

That narrowed the problem down to tape that I was punching and playing  
back myself.  I got two good suggestions from the greenkeys members:

1) Rice gave me three suggestions for making adjustments that affect  
the printing of the first column.

2) Don House pointed out that the "fox box" generates a CR-LF-LTRS at  
the end of each line and that my TD must not be sending the LTRS  
correctly and the LTRS is required to seat the carriage properly.   
Well, the reason that the TD was not sending the LTRS character  
correctly is because I was not typing it!  I was just doing CR-LF and  
then typing on my merry way.

Being a lazy bum, I decided to check out Don's suggestion before  
trying to adjust my machine ad potentially make things far worse.  I  
typed another paragraph of info (complete with more typos) but hit  
LTRS after CR-LF.  I played the tape back 3 times and could not get  
the problem to reoccur.  Here is what it looks like now:

http://www.mindspring.com/~vibroplex/tty_fixed.jpg

Now, I just need to figure out how to type my Morse Day welcome  
message without typos.

By the way, to those of you reading this message from overseas...I  
know that Morse's contribution to the telegraph is widely thought to  
have been exaggerated and that the experiments of Joseph Henry were  
likely more responsible for the invention.  Also, the "Morse" code is  
thought my many scholars to have been the invention of Alfred Vail,  
Morse's assistant.  All this is way too complicated to communicate to  
the visitors who are coming to the Wabash depot in Ferguson, MO for  
Morse Day and want to watch things go click and clack.
I am very grateful to Rice and Don for their suggestions and I think  
I'm back on track!

73,

Derek
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