Makes sense.
I guess someone wanting a cheap and dirty solution would have to use a down-converting mixer and record to a file via a sound card, and then mix back to a ham band (assuming, as I suspect would be the case, that for a demo they'd be willing to put up with the image and carrier). 73, Dave AB7E On 8/11/2010 11:10 PM, David Woolley (E.L) wrote: > David Gilbert wrote: >> make them unusable for recording simple RF. A DVR might not have >> that problem, although noise and signal levels could still be an >> issue. It might also be the case that any standard video recorder >> (or at least the software associated with it) might try to insert >> sync pulses on playback. > > The lossy compression strategies used in DVRs make them only suitable > for moving picture for direct human consumption. They do things like > only encoding the differences between frames, encoding the movement of > blocks, transmitting a rough update to a frame and then refining it > over successive frames if it doesn't change, and selective control of > spacial frequency response. > > Because the compression is 3D (two in space and one in time), sync > pulses are even more important to them. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
