On Sun, Oct 07, 2007 at 10:09:42AM -0700, we recorded a bogon-computron collision of the <[EMAIL PROTECTED]> flavor, containing: > > Bob Bruninga came up with yet another method of adding precision, > called DAO. With this method you add some extra characters to the > comment field that give you the extra precision _and_ specify the > datum for the posit. Very few APRS clients have implemented DAO at > this time. Bob likes it because it doesn't make the Kenwood radios > obsolete I think. As I recall the Kenwoods can handle Base-91 just > fine for posits, but have a problem with Base-91 "Objects" or maybe > it was just Base-91 "Items".
The kenwood D7&D700 don't understand Items at all, and can't deal with base-91 objects. They handle base-91 posits Just Fine. I don't quite understand why they'd do that in the firmware --- if they're going to bother writing code to handle base-91, why not let it apply to all types of position reports? But there you have it. I don't know if the D710 supports base-91 fully. Since Bob is so down on base-91 now and he had Kenwood's ear, I suppose not. The big advantage of DAO is that stations that don't understand it just ignore the extra digits of precision it offers, and treat the packet as a regular un-compressed posit. There are numerous statements flying around in APRSSIG that Xastir supports DAO, but as far as I can tell this is incorrect, and Xastir knows nothing about DAO. -- Tom Russo KM5VY SAR502 DM64ux http://www.swcp.com/~russo/ Tijeras, NM QRPL#1592 K2#398 SOC#236 AHTB#1 http://kevan.org/brain.cgi?DDTNM "And, isn't sanity really just a one-trick pony anyway? I mean all you get is one trick, rational thinking, but when you're good and crazy, oooh, oooh, oooh, the sky is the limit!" --- The Tick _______________________________________________ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
