Andy, Video ID is nice but when sent "horizontal" it has a very low average power so won't work well in poor conditions. The RS ID is sequential MFSK and will have 100% power. Also the Video ID doesn't automatically "tune in" your software.
In MultiPSK it is possible to use both types of ID before a transmission and this is useful if testing out a relatively unknown mode and you want others who don't run MultiPSK to know what you are transmitting in and those that do to automatically switch modes. The only thing I would warn against is using the Video ID in an ARQ mode as it adds a significant delay to the switching. ALE400 FAE has the ability to transmit the RS ID only on initial calls and connects and then it is turned off for the duration of the QSO. An upshot of this is that if you know there is a MultiPSK enabled machine on frequency you can "SELCAL" it and make the link without the other operator doing anything. Even if you are off tune the other machine will home in on your signal and if it is the right call it will respond to you. I have used this to successfully send John VE5MU an "email" with a binary attachment without any intervention required by him. Of course the ARQ nature of ALE400 FAE means that the email + attachment get sent without error and you are notified that the sending was successful. 73, Sholto. Andrew O'Brien wrote: > With Multipsk, FLDIGI and DM780 all using Video ID, maybe that is the > best for now, > > Andy > > On Wed, May 14, 2008 at 9:58 PM, Rick <[EMAIL PROTECTED]> wrote: >> You know what? I have not used RS ID much as of late and it never even >> entered my mind to use this last night. But then again, both stations >> need to use Multipsk for that to work. >> >> Are any other programs going to be adding the technology? >> >> 73, >> >> Rick, KV9U >> >> Sholto Fisher wrote: >>> The problem with knowing where to tune any signal can be solved >>> completely by use of RS ID (as in MultiPSK, PocketDigi etc). It amazes >>> me we have had this technology for over a year now and very few people >>> seem to realize the potential of this. >>> >>> Even with s/n ratios down around -15dB MultiPSK will successfully lock >>> on to the center frequency of any mode and also switch to the correct >>> mode/parameters. >>> >>> In the real world there is always going to be some mis-tuning and >>> although the IFK modes have excellent tolerance in respect to this if >>> someone is 500Hz away they aren't going to decode your transmission, >>> especially if they can't see it on the waterfall. Sending an RS ID >>> before will get them on frequency instantly. >>> >>> 73, Sholto >>> KE7HPV. >>> >>> >> > > >
