aransas42
New member
anyone know of a good source for these? would be nice to get the knobs too. thanks in advance

My favorite scopeI was using mine last night on an old AM radio.
There is always a ton of parts on E-bay. Here is what you need:
https://www.ebay.com/itm/Tektronix-465M-100MHz-2-Channel-Oscilloscope-TIME-BASE-MODULE-/183892597844