The RBN's unique contribution, in North America but also worldwide, is to provide as many data points as possible during the 1400-2200Z period. In order to do this, two departures from normal practice are needed:
1. It is desirable for science to have much more frequent spots of stations active in the QSO Party than could be produced with the standard 10 minute respot interval. To this end, Alex has provided for adjustabilty in this respect in the current versions of CW Skimmer, CW Skimmer Server and RTTY Skimmer Server. By adding a single line to the .ini file for your skimming software, you can adjust the respot interval anywhere from the original 10 minutes down to zero. In the latter case, every repetition of a station's callsign will be reported (provided of course that the station includes CQ or TEST at least twice in each transmission).
2. The RBN archive is not the best source of the scientific data
we hope to produce, because the timing is relatively imprecise
(nearest minute). So check your Skimmer computer for a file
titled "spots.txt" , which will be found in C:\users\[your
username]\Appdata\Roaming\Afreet\Products\Skimsrv. The spots.txt
file gives the time when a spot is actually made, to the nearest
second. Regrettably, there is no comparable file in CW Skimmer.
For Skimmer ops, your data are welcome too, even if still on a
10-minute scale - after all the eclipse period is hours long!
If you have been operating your node for a while, this file will
be quite large - all that we need is 1400-2200Z on the 21st. You
can use a text editor to extract the part we need. We'll tell you
where to send your spot file shortly.
HamSCI is also looking for recordings of digital I/Q data from Skimmer receivers made during the duration of the Solar Eclipse QSO Party. This will allow HamSCI to replay and analyze recordings from specific receivers in greater depth following the contest. HamSCI will be publishing guides shortly on how this can be done with the QS1R or Red Pitaya and CW Skimmer Server, or with any SDR capable of sending data to CW Skimmer using its built-in recording function. Note that this will consume significant hard disk space - up to about 4GB per hour per band. The data will be accepted for upload or in physical form after the contest.
If you're interested in putting your node to work on this
project, you're still lacking one thing - the magic formula to put
into your Skimsrv's ini file. Email me, and the secrets
of the universe will be revealed.
I'm doing it this way because I want to have some reasonable confidence that people won't start using shorter interval settings with the RBN servers outside the eclipse period. Even one Skimmer can make a big difference in this regard, and we will not hesitate to block anyone's spots from the RBN server if they violate this rule outside the eclipse period.
73, Pete N4ZR Check out the Reverse Beacon Network at <http://reversebeacon.net>, now spotting RTTY activity worldwide. For spots, please use your favorite "retail" DX cluster.
Should I give RBN
people the zenodo URL for uploading their RBN spots.txt files? Maybe a folder just for this?
73, Pete N4ZR Download the new N1MM Logger+ at <http://N1MM.hamdocs.com>. Check out the Reverse Beacon Network at
<http://reversebeacon.net>, now spotting RTTY activity worldwide. For spots, please use your favorite "retail" DX cluster.
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It may also be useful
to develop a means of comparing the spot data generated by the
RBN with the I/Q recordings. The CW Skimmer Server's spots.txt file has
time resolution to
the nearest second.
73, Pete N4ZR Download the new N1MM Logger+ at <http://N1MM.hamdocs.com>. Check out the Reverse Beacon Network at <http://reversebeacon.net>, now spotting RTTY activity worldwide. For spots, please use your favorite "retail" DX cluster.
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I discussed this with Steve Hicks yesterday. They are planning time stamps to support contract from SWRI and that will fold into the main product but it isn't in there yet.
Boh
Dr. Robert W. McGwier, Chief Scientist
Hume Center for National Security and Technology
Virginia Tech