[GreenKeys] Dovetron

[COURYHOUSE at aol.com]

Larry  you said -"Apparently this came originally with the  scope and now 
it has the + display feature."
 
I have  three of these Dovetrons here  and was trying to figure  out   why 
one older  one  had  led red cross and  the others had  crt tube  ...  guess 
I  should   have suspected a retrofit.!  Ed#  _www.smecc.org_ 
(http://www.smecc.org)  
 
 
In a message dated 8/23/2013 12:21:23 P.M. US Mountain Standard Time,  
telegrapher at q.com writes:

My new Dovetron arrived today.  What a thing of  beauty.  Looks like its 
never been used.  Screws in the lid had not  been turned for one thing.  There 
was all sorts of documentation from  Dovetron about their products which 
were a page length for each.  This  unit has the TID-100 board plugged into 
the mother board.  No i've not  tried to read what its programmed for.

Apparently this came originally  with the scope and now it has the + 
display feature.  The manual that  came with it only talks about the scope 
features and nothing about the current  display.  Does someone out there have a 
file from their manual that talks  about what the different symbols or lighted 
segments mean that appear in the  different quadrants.  Lower right and 
upper left are for tuning it  appears but it seems to me that the two bars in 
the middle , whether lighted  or not meant something as well but i don't 
recall what it was.

It also  appears that the tuning for Mark-Space is not correct.  While i 
can get a  good cross (+) the upper left led does not completely extinguish 
and the  frequency reads about 2295 on the mark tuning control.  The Space 
side  reads around the 2550 cycle mark but that lower right led is  
extinguished.  I need to do a calibration of those two it appears.   

This is an MPC-1000 unit

Seems to take a pretty high input to  put the loss of sig lamp out even 
with adjusting the Threshold and level  controls,  May be something else that 
can be changed out to lower the  sensitivity.

Larry
W0OGH



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