I would like to find schematics for this kind of tuning kit


http://www.benl.ebay.be/itm/QRP-1-30...em3ce983 2e27

http://www.benl.ebay.be/itm/361020782252

These kits provide the parts, sometimes no builing plans included. I know more or less how to make, but don't really know why resistors
needed ... (or a print, in general ... if there are no transistors to amplify ...)


Thanks
Marc

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