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  #1  
Old 11-30-2011, 10:18 PM
pierce1 pierce1 is offline
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An Old THread about eico 368

Hi Everyone.I know this is old thread but I'll try anyway .Can someone tell me about where I can find the project page in service magazine April 1969 for upgrading an EICO 368 TO POST INJECTION .I Tried all over the net with no luck finding it .This is a call to jshorva 65 if you still out there or anyone who has this information would gladly appreciate it and pay for the time and trouble
Thanks all
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Old 12-21-2012, 09:23 PM
MickM MickM is offline
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Hi;
I would like this info too, if avaliable.

Thanks

Mick M
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Old 12-21-2012, 11:00 PM
bob91343 bob91343 is offline
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Tell me just what you mean by post injection and perhaps I can devise something for you.
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Old 12-21-2012, 11:11 PM
bob91343 bob91343 is offline
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Okay I figured it out. The marker and the RF output are combined via R12, 220 Ohms.

You remove that resistor and run the marker from the wiper of the Marker Size control to a separate jack. You can use the Ext Marker jack for this, by disconnecting it from C5, a .001 uF capacitor.

Now you can inject the marker anywhere you like, independent of the sweep output.
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Old 12-22-2012, 12:39 AM
MickM MickM is offline
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Hi bob91343;
thanks for the reply.
I have searched a lot for the answer.
There are a lot of references, but no actual data.
The magazine article seems to have vanished.


Mick M.
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