Jack, I am glad to hear that you have found success with that, BUT --- Be careful with "juicing" the KX1. Yes, the power output will increase with DC voltage, but running the KX1 at greater than 4 watts can cause problems. The peak RF voltage must be less than the breakover voltage for the zener, and the capacitors in the Low Pass Filter are rated at 50 volts. The RF voltage will be greatest on C46 and C48. While the RF voltages may be under control when feeding a 50 ohm antenna load, the RF Voltages increase substantially as the SWR increases. That is one of the consequences of a compact design. If there were greater physical space, higher voltage rated capacitors could be used and this would not be a concern. Note that the same thing applies to installing the "Power Mod" on the KX1. If the KX1 already can achieve 4 watts output, the power mod should not be applied.
73, Don W3FPR Jack Regan wrote: > I am very interested in this topic!!! > > I DO juice my KX1. I run it at 14.2 VDC when at home and it makes quite big > difference in the output power! Of course, in the field I use a 12 VDC > battery. I have almost never used the internal battery setup with a nominal > 9 VDC. > > I am a big fan of more power when needed. I was stuck at 85 DXCC entities > until I got an Ameritron 811-H amp from eBay. I now have 94 confirmed and 17 > pending entities. > > BTW, I sold my legal limit amp to buy my K3, so I do understand the joy of > barefoot operations with a good rig and of course I have had my KX1 for > years now. > > Jack, AE6GC, K3-100 Kit, KX1 Kit Fully Loaded (including the SMD CW TUNING > INDICATOR) > > -----Original Message----- > snip........ > > Does anyone "juice" their K3 bu turning up the PS voltage to 15 volts or > so. I do that with my K2/10 to get some more power out. I was wondering if > that is a practice with the K3 which I am not doing. > > Lee - K0WA > > snip.................. > > > > ______________________________________________________________ > 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 > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.0.237 / Virus Database: 270.11.9/1993 - Release Date: 03/10/09 > 07:19:00 > > ______________________________________________________________ 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
