I see empty callsigns displayed all the time on weak signals (HT's usually) on the receiving radio (error detection... it was bad, so... chuck it), and in the D-Plus logs on the W0CDS Gateway, all the time. Never on strong signals.
In fact, seeing the callsign go "missing" is a great way for me (as a system admin of a Gateway, but there's no visibility to people who can't see the D-Plus log, maybe I should figure out a way to publish that on the web) to tell someone's NEVER going to be able to pass D-RATS traffic... their data is already far too mangled. A way for users to test this (although possibly annoying for those listening) is to send DIFFERENT commands to D-Plus back to back. If you send a command and get the expected message back for the PREVIOUS command you sent... your headers are mangled. (I've run into this taking down a D-Plus link while mobile and heard it happen to a number of people. Send the command, then switch back to CQCQCQ and get "Not currently linked" after transmission #2. This means D-Plus thought you sent the original command over again, and didn't "see" CQCQCQ. Sadly, this is HIGHLY confusing for users.) -- Nate Duehr, WY0X n...@natetech.com On Fri, 16 Oct 2009 21:25 +0000, "Woodrick, Ed" <ewoodr...@ed-com.com> wrote: And you can tell that there is some error detection/correction because how often do you see a bad call sign displayed? If there wasn’t, you’d see also sorts of crap in the Last Heard list. Ed WA4YIH From: dstar_digi...@yahoogroups. com [mailto:dstar_digi...@yahoogroups.com] On Behalf Of Tony Langdon Sent: Friday, October 16, 2009 5:09 PM To: dstar_digi...@yahoogroups.comsubject: Re: [DSTAR_DIGITAL] Re: Beeps At 07:20 AM 10/17/2009, you wrote: >That is not what I read in previous discussions by folks who were >actually doing protocol-level work, but if you insist that the >headers are encapsulated inside the portion of the stream that's >covered by FEC, I can't really refute it technically. My understanding is that the voice uses the FEC built into the AMBE vocoder, which the headers don't have access to. 73 de VK3JED / VK3IRL [1]http://vkradio.com References 1. http://vkradio.com/ 2. http://groups.yahoo.com/group/dstar_digital/message/9044;_ylc=X3oDMTM1NDA5anFtBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARtc2dJZAM5MDg4BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTI1NTcyODMyNAR0cGNJZAM5MDQ0 3. http://groups.yahoo.com/group/dstar_digital/post;_ylc=X3oDMTJxYnNxNDQ1BF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARtc2dJZAM5MDg4BHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTI1NTcyODMyNA--?act=reply&messageNum=9088 4. http://groups.yahoo.com/group/dstar_digital/post;_ylc=X3oDMTJmZmVraWhvBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNudHBjBHN0aW1lAzEyNTU3MjgzMjQ- 5. http://groups.yahoo.com/group/dstar_digital/messages;_ylc=X3oDMTJmdWxyaWhsBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNtc2dzBHN0aW1lAzEyNTU3MjgzMjQ- 6. http://groups.yahoo.com/group/dstar_digital/files;_ylc=X3oDMTJnZWFpdnJqBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNmaWxlcwRzdGltZQMxMjU1NzI4MzI0 7. http://groups.yahoo.com/group/dstar_digital/photos;_ylc=X3oDMTJmOW9oNHNvBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNwaG90BHN0aW1lAzEyNTU3MjgzMjQ- 8. http://groups.yahoo.com/group/dstar_digital/links;_ylc=X3oDMTJnY2dmcW0xBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNsaW5rcwRzdGltZQMxMjU1NzI4MzI0 9. http://groups.yahoo.com/group/dstar_digital/database;_ylc=X3oDMTJkcjMzZWJiBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNkYgRzdGltZQMxMjU1NzI4MzI0 10. http://groups.yahoo.com/group/dstar_digital/polls;_ylc=X3oDMTJnNHExNHNoBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNwb2xscwRzdGltZQMxMjU1NzI4MzI0 11. http://groups.yahoo.com/group/dstar_digital/calendar;_ylc=X3oDMTJlbzEybHZvBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNjYWwEc3RpbWUDMTI1NTcyODMyNA-- 12. http://groups.yahoo.com/;_ylc=X3oDMTJlZjdqOW45BF9TAzk3NDc2NTkwBGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNnZnAEc3RpbWUDMTI1NTcyODMyNA-- 13. http://groups.yahoo.com/group/dstar_digital/join;_ylc=X3oDMTJnMGJuZXZpBF9TAzk3NDc2NTkwBGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNzdG5ncwRzdGltZQMxMjU1NzI4MzI0 14. mailto:dstar_digital-dig...@yahoogroups.com?subject=email%20delivery:%20Digest 15. mailto:dstar_digital-traditio...@yahoogroups.com?subject=change%20delivery%20format:%20Traditional 16. http://groups.yahoo.com/group/dstar_digital;_ylc=X3oDMTJlMWMwc2QxBF9TAzk3NDc2NTkwBGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNocGYEc3RpbWUDMTI1NTcyODMyNA-- 17. http://docs.yahoo.com/info/terms/ 18. mailto:dstar_digital-unsubscr...@yahoogroups.com?subject= 19. http://groups.yahoo.com/group/dstar_digital/members;_ylc=X3oDMTJnc3RzMGNkBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDdnRsBHNsawN2bWJycwRzdGltZQMxMjU1NzI4MzI0 20. http://groups.yahoo.com/group/dstar_digital/links;_ylc=X3oDMTJoOGNxMXR0BF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDdnRsBHNsawN2bGlua3MEc3RpbWUDMTI1NTcyODMyNA-- 21. http://groups.yahoo.com/group/dstar_digital;_ylc=X3oDMTJmMzIzcHNrBF9TAzk3MzU5NzE0BGdycElkAzIwNTEwNTI2BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDdnRsBHNsawN2Z2hwBHN0aW1lAzEyNTU3MjgzMjQ- 22. http://us.lrd.yahoo.com/_ylc=X3oDMTJuaGlldm02BF9TAzk3MzU5NzE0BF9wAzEEZ3JwSWQDMjA1MTA1MjYEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwNuY21vZARzbGsDYnJhbmQEc3RpbWUDMTI1NTcyODMyNA--;_ylg=1/SIG=11314uv3k/**http%3A//brand.yahoo.com/forgood 23. http://us.lrd.yahoo.com/_ylc=X3oDMTJwc3UzcWplBF9TAzk3MzU5NzE0BF9wAzIEZ3JwSWQDMjA1MTA1MjYEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwNuY21vZARzbGsDdG9vbGJhcgRzdGltZQMxMjU1NzI4MzI0;_ylg=1/SIG=11c6dvmk9/**http%3A//toolbar.yahoo.com/%3F.cpdl=ygrps 24. http://groups.yahoo.com/start;_ylc=X3oDMTJwa25rN3RjBF9TAzk3MzU5NzE0BF9wAzMEZ3JwSWQDMjA1MTA1MjYEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwNuY21vZARzbGsDZ3JvdXBzMgRzdGltZQMxMjU1NzI4MzI0
