?When I think about it, it should be much easier to "preprocess" input audio into I and Q paths by CPU/DSP and then use a relatively simple hardware mixer + envelope modulator of the PA. Or, even better, instead of using class E PA modulated by supply voltage (can 100% modulation be achieved by modulating supply voltage of a class E amplifier? - needed for PSK) add a linear stage, class B or AB. It would surely destroy the excellent energy efficiency vs class E PA, but it would be relatively easy way to implement SSB by doing in software what is difficult to realize in hardware and doing in hardware what would be terribly complicated in software.?
Just an idea...
73! Jindra OK4RM
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On Thu, May 16, 2024 at 09:15 PM, Doug Hendricks wrote:
I for one, am extremely disappointed in this announcement.? ?I was expecting the announcement of firmware that would give us the long awaited SSB.? Instead we got 2 new bands that have very limited usability at qrp levels.? How many qrpers have a portable antenna for 160?? And 6 has to have a band opening.? ?This is not a condemnation of the announcement,? just an explanation of my disappointment.? ?Hans, when can we reasonably expect firmware that will? give us SSB?
