But the thing is, Siegfried, WSPR is limited by design to use just 200Hz of spectrum. Each individual user needs only about 6Hz of bandwidth. JT65 also uses quite a small part of the spectrum. I accept that those modes don't allow the free text contacts you are looking for, but these modes can handle the number of people who wish to use them without interfering with other users.
The trouble with ROS is the amount of spectrum it requires to allow free text to be exchanged using WSPR-like power levels means that there isn't a place for it on the popular bands like 40m and 20m. ROS would be fine if it was just an experimental mode being used occasionally between a few enthusiasts. But by making a free download available to all it has become a problem for all of digital ham radio. With the number of users out there, even 3 channels won't be enough for ROS to become a widespread use mode. It is no good just designing a clever mode if you don't also consider how it will be used given the constraints that exist within the amateur bands. The question I would like to ask you, Siegfried, and any other defenders of the ROS software is this: Why should dozens of other users be pushed aside and suffer QRM just so people like you can try to make DX contacts using lower power than normal? No-one is forcing you to use such low power. Taking up excessive bandwidth in order to do so is plain selfish. If people want to make DX contacts they should use one of the existing modes and more power. It would be nice to be able to use modes like ROS but our bands simply aren't wide enough to allow everyone to do so. Why not just use PSK31 which at 30 or so Hz is narrow enough to allow dozens of simultaneous free text contacts and still does not demand huge amounts of power to work DX? Julian, G4ILO --- In [email protected], "Siegfried Jackstien" <siegfried.jackst...@...> wrote: > > >Jose is then inventing the (too wide) wheel again. José's goals have been > met by WSPR far and far better... > > No that is not correct > > Does wspr send keyboard to keyboard with any text at any given time with 300 > signs a minute ? > > No wspr is different in many ways > > Wspr is okay for propagation tests with low power and has a fixed transmit > window (in time) > > Ros is faster, has no timing window and no precoded messages > > so you can type what you want to the other not only call locator and > output > > any text is possible > > faster as most of us can type >
