[Central-Electronics] CE-100V Scope

[Gordon]

Hi Lee,
When checking for a 8Mhz signal at  V21, I do not see it.
So, I went back and started tracing from the 8 mhz crystal and I loose 
it in the  Modulator Diode/Coil plugin can .
I have a good 8Mhz signal going in on pins 5,6,7 & 8, but nothing coming 
out on pin 3 to the coax that goes to the low level RF board.
Looks like I need to open that Can up and see what's up.
I should be able to see a 8 Mhz signal coming out of that can on my HP 
Freq counter, like I see going in shouldn't I ?

73,
Gordon


On 9/13/2013 4:24 PM, LeeCraner at aol.com wrote:
> 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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