Looks like the wall wart cannot provide the 2.5 A needed for transmit. The drop to 10 V automatically triggers dropping to 5 W.
If you want a small supply, the KX-33 can provide 4 A at 14 V. https://proaudioeng.com/products/pae-kx33-low-rfi-ac-power-supply/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 7, 2021, at 1:16 PM, David Hourdequin <[email protected]> wrote: > > I am in the process of getting familiar with my newly acquired KX3 purchased > for POTA and am enjoying it immensely. > > I am powering it with a 14.8V, high quality, Yamaha walwart - very little > internal noise. Settings indicated in the VFO B display area using DISP are > normal. > > When I set the PWR level to 10 watts and then key the xmtr, the power > immediately drops to 5 watts. With the key down, I am monitoring the VFO B > display which indicates a drop from 14.8V to 10+V and 1+A. That makes it > 10W. If so, why does the reading when I push in PWR drop to 5W? Is that > ‘input’ power vs ‘output’ power, ie, 50% efficiency? > > If that is true, how does one achieve and maintain 10W of output power? > > Any help would be most appreciated. Feel free to RSVP here or call if you > like - or send me your number and I’ll call you! > > Tnx es 73, David, NS4V > > David R. Hourdequin, PE > 828-421-6216 > [email protected] > > > > > > ______________________________________________________________ > 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 > Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
