Elecraft is right on top of it; I'm also confident we'll have a solution fairly soon.
73, Matt VK2RQ > On 17 May 2014, at 1:52 pm, Ron Cowherd <[email protected]> wrote: > > Yes, I have also had similar problems with the KXPA100 (SN#0876)and have > already composed and sent a letter to support. The letter is much too > detailed to reproduce here but I also suspected a firmware glitch. My unit > was working flawlessly until the upgrade. I'm sure the problem will soon be > solved. > > 73, Ron K4GYD > > Sent from my iPad > >> On May 16, 2014, at 6:56 PM, Matt VK2RQ <[email protected]> wrote: >> >> How are people finding this new firmware? >> >> I've been having problems recently with my KXPA100, where it intermittently >> shows high SWR for a brief moment, and then either recovers or puts itself >> in bypass. At first I thought I had an issue with my antenna, but I >> discovered it was happening with a dummy load too. It mostly happens on SSB, >> but it happens to a lesser extent CW. It also happens with both my KX3 with >> integrated cable, and with my K2 using the keying line. I pulled the amp >> apart, looking for poor connections and dry joints, but no success there. By >> gently blowing across the mike, I was able to get it into the failure mode, >> and stay there. The SWR bridge in the amp was reading high. I had a >> crossneedle SWR meter between the radio and the amp, but as I blew >> progressively harder into the mike, the SWR on the meter was low. Then, once >> the power applied reached a certain level, the amp would come good again. >> This made me suspect whether the band auto-sensing may have been switching >> in a wrong LPF? >> >> Then last night, I reflashed the amp with release firmware 1.28, but still >> had the problem. Then I downgraded the firmware on the amp from 1.28 to >> 1.09, which was the release my amp was shipped with. I haven't observed or >> been able to reproduce the problem since. This is now leading me to suspect >> a possible bug in the 1.28 firmware? >> >> I'm wondering if anyone else may have observed any strange glitches with the >> 1.28 firmware? >> >> 73, Matt VK2RQ >> >>> On 3 May 2014, at 2:14 am, Eric Swartz - WA6HHQ, Elecraft >>> <[email protected]> wrote: >>> >>> KXPA100 Production Firmware MCU 1.28 has been released to production status >>> and is now shipping. >>> >>> Important: This version of firmware has new features that require the very >>> latest KXPA100 Utility. >>> >>> We recommend all KXPA100 owners upgrade to the latest KXPA100 utility and >>> to KXPA100 MCU 1.28. >>> >>> >>> Some of the Key Changes in this release: >>> >>> - Better tolerates forward and reflected power overshoot for brief periods >>> to support external antenna tuners. Use approximately 10-20 watts of >>> KXPA100 output when tuning. >>> >>> - When the attenuator is acquired because of SWR or high reflected power, >>> release attenuator immediately on next key up if SWR has been reduced to >>> 3:1 or less. >>> >>> - Update band voltage tables for ICOM 703 and Yaesu FT-817 >>> >>> - Reduce power required for ATU tune. >>> >>> - Add per-band Antenna configuration (requires the new KXPA Utility for >>> user interface) >>> >>> - Improved RS232 handling for 3rd party applications. (Ham Radio Deluxe >>> v6.2, PigKnob, etc.) >>> >>> >>> 73, >>> Eric >>> elecraft.com >>> >>> ______________________________________________________________ >>> 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] ______________________________________________________________ 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]
