On 12 January 2012 17:02, Wayne Burdick <[email protected]> wrote:
> The KX3 can put out up to 12 W. At this power level we recommend using a > 13-14 V power supply. > > On some bands the KX3 will put out 10 W with a supply voltage as low as 11 > V. This is ideal for use with gel-cells and car or motorcycle batteries. > > Below 11 V, the max power setting is 5.0 W, where the KX3 automatically > switches the PA to a mode that's more efficient at low voltage/low power. > On most bands, 5 W is possible with a 9.6-V supply, e.g. 8 internal NiMH > cells. > Thanks for that info Wayne, basically the TX performance will be on par with or better than the FT-817 with the Li-Pol cell (much better when it's fully charged). That said, does anyone on the list know of a circuit that could step up the voltage of the 12V LiPol cell to a regulated clean 13.8V supply? It would be great to be able to put out the full power continuously. I guess an inverter and switched mode supply could be used but that would be far overkill, does anyone know of any chips e.g. available from Farnell that could be used in such a box? The LiPol should easily be able to deliver the amps needed even when partially discharged, and the supply would have other uses too. 73, Thomas ______________________________________________________________ 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
