[GreenKeys] M28 line feed on carriage return

[Wa3frp]

There is one easy way to accomplish this on a M28 line printer that IRV W6FFC documented back in the 1970s.

It is as simple as exchanging two of the universal code bars in the stunt box.  Here are the steps to make the change:
 
 
  
Remove the roll of paper
  
With the motor running, look      at the top of the stunt box.
  
Hit the CR key and some slot      will show activity.  This should be      slot 5, counting from right to left as you stand in front of the machine.
  
Hit the LF key and two slots      should show activity.  These should      be slots 38 and 40, counting from right to left as you stand in front of      the machine.
  
Leave slot 40 alone.
  
Remove the LP and take out the      stunt box (after disabling all power).
  
Swap the universal code bars      in slots 5 and 38 and reassemble the machine.
 

 
Now, when the CR key is pressed, nothing happens.  When the LF key is pressed, both CR and LFoccur at the same time.
 
You will still have to hit the CR key when you aretransmitting.  The CR character stillneeds to be sent to the distant machine. It may seem awkward to type the CR key and have nothing happen. But, thesimplicity of this change, the fact that no additional parts are needed andthat it works so well are huge benefits.

73


Russ - WA3FRP
wa3frp at aol.com

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