can anyone help me with this, sorry for being so naive, but in this schem. ( http://mujweb.cz/jmartis/qrv4_en_final.png ) what electrical component is located off of pin 4 of the UC that almost looks exactly like a variable resistor. Also, all the capacitor labeling is odd too, 3n3? And if anyone knows a webpage or something that has every symbol on it for everything that would be wonderful! thank you! ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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