Rather than put my post at the end of the What's DXA post I'll put it here to get attention.
Go to http://tx5k.org
and click on the DXA link or go directly to DXA at http://dxa2.org
DXA is a semi realtime QSO display system. When you make a QSO it should display on the map within 1 or 2 minutes. This way you know you are in the log or if your call got busted. You do not have to refresh the web page, we do a request every minute to the web backend for new data.
The way it works is this:
The guys on the island are logging using WinTest, that is the OFFICIAL LOG! We have another program that extracts data from WinTest and puts it in a separate database. QSOs from this database are uploaded over a satellite link once a minute. So if 6 QSOs are made in a one minute period, at the end of that minute a packet is created for upload. Within one minute that packet will be uploaded. It goes to folder on a server where files are picked up once per minute and processed and sent to the DXA web site.
This means there can be up to a three minute delay (worst case) between making a QSO and it showing up on the web page. Your QSO will show up in the list of current QSOs and on the map approximately where you are located. If you see your QSO, you are in the log. If you pay attention to who worked TX5K before and after you then you can tell if your call was busted. Or, like me, another person near me has a similar call and we often are in the pileups together. I will see immediately if W6OP (me) got in the log or W6OPO (the other guy) made it. Or sometimes on phone they get me as W6AP, must be how I pronounce Oscar
In addition, DXA shows you what bands are being worked at a given time. Due to technical constraints we cannot be 100% correct on the bands but we are pretty close. Right on when the QSO rate is high. If you hover with your mouse on the QSOs in the current or previous list you should get a tooltip that gives the mode and band that was worked by that person.
Actually it is more a log search, not the official log but the copy we hold. We don't keep track of these or anything, it is just held in the browser and we make a query and light up the boxes of the QSOs you have already made. Also, if you are logged in and your QSO appears on screen we will play a sound (doesn't always work) and put a message in the box on the lower right to get your attention.
They had some kind of problem get the satellite link working. Therefore we are missing a bunch of QSOs in our server database, the OFFICIAL LOG IS SAFE on the island, don't worry about it. We hope to get the QSOs uploaded soon and get them in the DXA database.
If you have more questions, or browser issues, just leave a reply here. I'll try to check back several times a day.
On the TX5K home page click on the "Blog" link to get news and see pictures from Clipperton Island.