That's right, Alan. You can safely connect an external power supply with the internal batteries installed. The KX1 will draw power from whichever has the higher voltage, the internal battery or the external power supply.
Of course, that will be the external supply normally, unless you are using a very low-voltage supply for some reason. Ron AC7AC -----Original Message----- Hi, I am running my KX1 off of a 12 Volt supply right now and leaving the batteries in the unit. I assume the purpose of D2 and D3 is to isolate the power jack from the batteries when power is applied to the Jack? Sure looks like it. 73 Alan _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com

