Heat issues might be the case for 'shack in a box' rigs like IC-7100s, FT-857s etc...
However, rigs like the IC-7300, IC-7610 will quite happily sit there putting out 100W of FSK (e.g. FT8) pretty much continuously. It helps that they have decent cooling. Since I'm feeding in that FSK signal via an audio input, the amp isn't biased differently... Can't really speak for Yaesu rigs, as I don't own any. 73 Mark VK5QI On Fri, Jun 19, 2020 at 6:08 AM David Rowe <da...@rowetel.com> wrote: > Hello Glen, > > > Consider though, that if you are at 10dB peak to average , that is 10W > > RMS for a 100W amplifier. Utilization of the 100W PA is not good ! > > Yes, and I would like to see if we can reduce PAPR (say by 3dB as a > firsts step) using some of the tricks you mentioned. > > However I am concerned that many of the SSB PAs in Ham radios aren't > rated for high RMS powers. They are probably biassed differently for CW > of FM operation. Bit worried about generating puddles of silicon, which > I understand happened in the early days of HF DV. > > Cheers, > David > > > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >
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