[Elecraft] KXPA100: Manual antenna switching and output power limit questions
Hi All, I searched Nabble and did not find these questions about the KXPA100 answered, so apologies in advance if they have been asked/answered previously. 1. If one has the KXAT100 ATU option installed, and is using the KXPA100 with an exciter other than the KX3 gasp, is manual antenna switching accomplished with a long press of the ATU TUNE button, as appears to be so from the legend on the control panel, or some other way? (Full disclosure: I have an IC-703+ with the W4RT dual Collins filter kit installed that unfortunately I get to use seldom enough that I can't justify replacing with a KX3 at this time.) 2. Does the KXPA100 have any limitation on recommended power output when using high duty cycle digital modes such as RTTY, JT65, PSK? Thanks in advance and 73 de Tyler, KC2LST __ 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
Re: [Elecraft] KXPA100: Manual antenna switching and output power limit questions
My unofficial response is that this is a thermal issue. With adequate cooling (operating on top of a glacier in Alaska in January), it can run at 100W for a very long time. In a bad thermal environment (operating in an olive drab canvas tent near Yuma at 1 PM local time in late June with a paperback book or two stacked on top of the heatsink), it will protect itself and go offline if it gets too hot. 73, Lyle KK7P 2. Does the KXPA100 have any limitation on recommended power output when using high duty cycle digital modes such as RTTY, JT65, PSK? __ 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
Re: [Elecraft] KXPA100: Manual antenna switching and output power limit questions
Hi Tyler, Basically what Lyle said about power output vs ambient temperature. Regarding the antenna switching, long press on the TUNE button changes antennas. You'll also be able to configure the amp to select a pre-programmed antenna port based on band. For example, a 6 meter beam on ANT2 and a dipole on ANT1 etc. This will be configurable using the KXPA Utility. 73, Paul -- View this message in context: http://elecraft.365791.n2.nabble.com/KXPA100-Manual-antenna-switching-and-output-power-limit-questions-tp7575571p7575577.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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
