I know that for the 5000a it was originally (and conservatively) stated that we Rtty'ers should stick to 50 watts output especially during contests, etc. Same for PSK. Later on, after getting some experience in the field, they lifted the restriction and said 100 watts was fine. I do not know what PAs they used in the 3000 but I would expect a similar approach (i.e., recommend 50 watts until experience shows it can be 100).
Neal Campbell Abroham Neal Software Programming Services for Windows, OS X and Linux www.abrohamnealsoftware.com (540) 242 0911 On Tue, May 5, 2009 at 12:05 PM, Brian Lloyd <brian-wb6...@lloyd.com> wrote: > > On May 5, 2009, at 6:22 AM, Burt wrote: > >> >> >> --- On Mon, 5/4/09, Tim Ellison <telli...@itsco.com> wrote: >> >> >>> [Tim] The PA will run 50 watts RTTY without any issues. >>> The PA is rated as full duty cycle, 100W ICAS (intermittent >>> commercial and amateur service) >> >> >> full duty cycle is key down all the time > > Well, one of the nice things about ddutil is that it has a display of PA > temperature. I operate olivia which tends toward long key-down periods. I > normally run with the audio input level at -1dB so my power output is > typically around 80W. I can stay key-down that way for an indefinite period > of time with the PA running at about 55C. > > So while they may spec it as ICAO, you can use ddutil to monitor PA temp and > know for yourself. > > -- > > 73 de Brian, WB6RQN/J79BPL > Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com > > > > > > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flex-radio.com/ Homepage: > http://www.flex-radio.com/ > _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
