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Title: Lambda C-481 , 481M help Post by: Opcom on January 17, 2014, 08:50:27 PM I'm helping my friend Jacob modify a lambda C-481, and the schematic attached to its rear inside wing is so defaced we can't use it. Does anyone have a good one? Or have a PS that has a good schematic on it, which they could photograph as well? (the back panel swings out making it easy enough for a close up.) AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
His project is to convert it to a grid bias servo amplifier with a response to about 40KC. That is not hard, but the schematic is needed, so to do it right. It is just like converting it to a series modulator. Any assistance would be appreciated. It's a bit old and rusty to be worth buying manuals for, esp. when it is going to be re-purposed like this other unit was (http://www.montagar.com/~patj/amxmtr_dc_classamod.html). |