Jeff, I've never seen a drop anywhere near this size across an APP connector. The contacts themselves are rated at something like 6 microohms resistance.
How are you measuring the drop? The K3's supply voltage display is not a good way to measure the drop across just the connector, because the voltage shown reflects several other components' voltage drops. These include the reverse-polarity protection diode, the self-resetting fuse for the low-power circuitry, and the current-sense resistor. On keydown, even circuit traces will show a drop, as will the cable between the rig and the power supply. 73, Wayne N6KR On Mar 24, 2011, at 3:08 PM, Jeff Cochrane - VK4BOF wrote: > I just cannot relate to the voltage drop across the connectors when > drawing 20+A. > On my rig (with its factory built cable) it approaches 1.2 Volt. > (And yes, the connectors do get warm!) > Even with decent cables that I have made using 4mm wire and 45Amp PP > connectors I still see .6 to .8V drop. ______________________________________________________________ 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
