[Central-Electronics] CE-100V Scope

[LeeCraner at aol.com]

Gordon:
 
I haven't been following this thread, so I don't know what you've tried  
yet.  Separately, I've sent you a schematic of just the scope portion of  the 
transmitter (actually, the 200V scope circuit, but it should be the same in  
you're 100V).  This schematic is part (page 19) of my dissected 200V  
schematic set available on my website:
 
http://www.emmittsfixitshop.com/Projects_CE200V.html
 
What you should have on your horizontal plates is a demodulated 8Mc  
signal.  If you have a regular bench scope, trace the 8Mc signal from the  8Mc amp 
plate through phono jack/plug feeding the xmtr's scope assembly and on  
through to pins 3 and 8 on the xmtr's CRT.  You should find your  problem in 
short order. 
 
73
Lee WB6SSW
 
 
In a message dated 9/13/2013 3:40:35 P.M. Pacific Daylight Time,  
gordon at n6wk.com writes:

I  received the Correct CRT tube today.
I installed it in great anticipation,  but when I turned the radio on and 
it warmed up, The Vertical Line is  still there  :-(
I noticed that V21 is an 8mc Amp, So should I be  seeing a 8Mc signal on 
Pin 9 of that tube?
I notice the Focus control  works, the Intensity works but the width 
doesn't seem to do much  .

I am baffled !

73,
Gordon
N6WK


On 9/9/2013  4:39 AM, Paul wrote:
> Just curious, what mode are you testing the scope  in? You mention "when 
you talk" so are you only testing it in a voice mode  like AM or SSB? What 
do you see if you test it in CW mode? If SSB mode, have  you nulled the 
carrier, as you adjust the null controls you should see the  vertical trace 
reduce in size until it becomes a pinprick in the center of the  scope.
>   
> Keep at the restoration, took me over a  year to do my 200V and now it is 
my main BA transmitter paired with my 75A-4.  I use the 200V far more than 
my KWS-1, especially since I added the 160m mod  to the 200V. That's where 
the KWS-1 really falls down, no 160m although the  75A-4 has 160m. What was 
Collins thinking?
>    
>
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