On Sat, 17 Oct 2009 21:18:29 -0000 "rameuser" <[email protected]> wrote:
> The problem is that there is no software for this function. > The flex radio people have it on a to do list. There is a > basic SSB generator that can be run in two instances which > will serve many peoples needs such as SSTV on one sideband > and voice on the other. This does not suit my needs because > the two separate SSB programs will not run in perfect sync. Maybe you clould describe your needs for "perfect sync" in an ISB signal. What do you want to achieve? With truly independent sidebands there is no phase relation between upper and lower sidebands so they do not require exactly the same carrier frequency. Only that the two carrier frequencies are close enough. > I do not see it adding much CPU load on any modern PC as > it only requires an extra hilbert transform and a mixer. The problem is the user interface. What is it you want to do that would require ISB. > As for receiving hardware, almost any transceiver with > a second receiver can receive ISB. It would be nice to > see it added to some SDR package that supports transmission. Well, with a second receiver one can receive a second independent channel. You say you want a special case. Why? 73 Leif / SM5BSZ
