Sounds like either that mod has already been done or your KIO3 board is newer than you think. IIRC the original value of R19 and R20 was 600 ohms. Adding a 51 ohm resistor in parallel gives 47 ohms. The newer boards have 51 ohm resistors in place of the 600 ohm units.
Perhaps Elecraft should add a "Does My K3 Have This Modification" section to their older mod instructions. Most of the newer mod instructions have such a section that explains how to tell if the mod has already been done. 73 -- Joe KB8AP On Jan 19, 2011, at 3:24 PM, [email protected] wrote: > I'm really confused. I have a KIO3A, Rev A, C 2007. According to the Mod > instructions this board should need the resistance modification. BEFORE I > began the mod, the resistance across R19 and R20 was about 51 ohms each. > So how can I put a 51 ohm resistor in parallel with R19 and 20 and end up > with a new resistance of between 45 and 49 ohms? Thinking there might be a > flaw in my thinking somewhere, I added a leaded resistor across R20 and > sure enough, the resistance was now about 26 ohms, so I took it out. > > What gives? Instructions wrong? Am I missing something? Thanks in > advance. > > 73, Dave ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
