[GreenKeys] Christmas Question From KD6EMW

[Russmill47 at aol.com]

In a message dated 12/24/2004 8:30:46 P.M. Eastern Standard Time,  
Wndrrt at cs.com writes:

Merry  Christmas to all who have been so helpful.
 
Merry Christmas! Thanks for giving us the opportunity to be helpful!



1. Can you put a TD, keyboard and printer in series with the TU  and 
transmit, 
or does the keyboard have to be separate from the TD and  printer to 
transmit? 
If you want to use the TD, must it transmit  separately?  I am searching for 
a setup plan to use all this new  hardware, the 14 and the 19 set.  Let me 
put 
it another way.   Does each component, TD, keyboard and printer have to be 
hooked to the  loop and the TU exclusively?  I think I need a "plug and play" 
 
diagram. 

2. Can I transmit and print my transmission at the same  time?  I know this 
sounds like the same question.

3.   Here is a new one.  When a glass screen communicates with a mechanical,  
why do the mechanicals like it if the glass screens turn off their  deedle?
I saw your question and smiled.  The deedle question came up before  the 
glass screens came to be.  The theory is something like this:  It  is better to 
have the teleprinter main shaft running at speed than to have  everything at 
full stop, patiently waiting for the "go" signal from the start  pulse.  The 
deedle also helps the distant operator tune your signal if  either party is 
drifting, frequency wise.  And, finally some of us are slow  typists and the deedle 
keeps things alive at both ends.  How's  that? 



4.  Why use crystals?  Don't new radios stay on  frequency?  My old Heathkit 
seems to do OK when it warms up. When I  use MMTTY as a learning tool, I 
notice 
that it changes frequency to follow  the signal as it changes. Does this not 
upset the little rock  crystal?    Just wondering.  
I happen use crystals because that's what my transmitter is equipped to  use. 
 And, it's easier to frequency shift this transmitter's crystals than  to 
modify the PTO that I could also use. Many folks have successfully used  the 
mainline frequency shift keyer that Irv Hoff developed for use with both  crystals 
and PTO's, VFO's, etc. On the other hand, crystals are nice for  Autostart 
net frequencies as you always know that you are a few Hz from where  you want to 
be transmitting. Finally, the crystal is being shifted 170 Hz,  not enough to 
matter.  Crystals can be 'pulled' much further than that  without problems, 
especially if the crystal output is being multiplied within  the transmitter. 
For example, some transmitters are set up for the  crystal to be frequency "x" 
and then internally multiply that frequency 'x'  to be "2x' or '4x' output 
frequency.    
 

73,
 
Russ
WA3FRP