Hi Carol, Actually both receivers were spot on. they wre giving the same results. I think each receiver sends it's own data some might send a little more then another. We just record the data as like a dump file, what the receiver sends we get even if we don't use the data. I think the important thing to keep in mind here is that they are really not that big. I'd suggest a replay folder on your cf card if you don't want to store them on the main unit. that's actually what i do. I have quite a few of these little replay files I've been recording sense January. This might give you an idea, i just checked the size of my replay folder. i have 97 files and they total 27 mb. Hope this helps. Chris On Wed, 18 Jul 2007 21:36:24 +0100, you wrote: >I'm interested to know how the data differred with the two receivers, Chris, >if you have time to give a quick account, please.