Rich, The first K3 I owned always showed a large voltage drop on TX that was pretty much incurable (as well as other issues), much to my (and others) consternation. I tried (In no particular order) Heavy gauge power cables, No fuses, Upping the power supply voltage, Re soldering the 30 Amp Anderson plugs on the power cable [s] and numerous different power leads, all to no avail. So, I learnt to live with it sort of. (The issue was always in the back of my mind however.) After some time though, financial circumstances forced me to sell my beloved K - Line. The new owner of the K3 also had concerns about the voltage drop, but, as he knew that I had already tried all the common things listed above he gave the radio the 'once over'. imagine his surprise when he discovered that there was NO SOLDER AT ALL on the Anderson Plug leads where they connect to the mainboard of the radio! So, he soldered the connections and as a result, that K3 now works perfectly all the time and with minimal voltage drop. (Which is probably just as well as the owner is a gold miner and lives in bush camps in Tropical Far North Queensland, Australia using nothing but solar power and batteries.)
So, it may just be an idea to open the radio and check the solder joints in and around the Anderson Plugs, you never know, your rig may have a dry joint there too. (And yes, I still own a K3, they ARE the best Amateur Radio transceiver on the planet after all) :) 73 de Jeff Cochrane - VK4XA (Ex VK4BOF, VK4VHF) Proud owner of Elecraft K3 #4767 Folks, I am not sure if I have some sort of issues or not. My K3 shows 13.7VDC on RX. When I TX that reading drops to 10.9VDC. Is that a normal drop? I do not believe this is a K3 issue, but I was wondering if others see that much drop before I dig into my 12VDC supply system. Thanks Rich ______________________________________________________________ ----- Jeff Cochrane - VK4XA Innisfail, QLD, Australia. K3 #4767 -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Voltage-on-TX-tp7609564p7609627.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
