You can embed the profile as an image on any website. A HTML snippet is provided on each statistics page, which looks like this:
<a href="https://rbn.telegraphy.de/activity/SO5CW"><img src="https://rbn.telegraphy.de/activity/image/SO5CW"></a>
Replace SO5CW with your call. When embedding this on your QRZ.com/HamQTH profile, make sure you switch to the Source view (click on the icon shown on the left) to see the raw HTML code, and then copy&paste the snippet into the source code. Note that the image is only updated once every hour, as opposed to the website which shows data in real time.
Reports are generated for every callsign spotted by the RBN. Currently the RBN receives CQ calls in Morse code, PSK31/PSK63, and RTTY. If you're QRV in these modes, and call CQ, it is very likely that your callsign shows up on the RBN.
Please note that the report says "hours with at least one RBN spot," which means exactly that: Clock hours (e.g. from minute 00 to 59) in which one spot was received. If you call CQ at 11:59:30 and one Skimmer reports you at 11:59:59 and another at 12:00:01, this means there was RBN activity in two hours, although you only called CQ once.
If you call CQ a lot, the reported hours will be inflated compared to the hours you spend at the radio. If you mainly answer CQ calls, you may not show up at all, regardless of how many hours you spend on the radio.
RBN data is downloaded and processed daily, around 02:00 UTC. Additionally (as of 2019-01-21) live data is also fed into the database, but this is still an experimental feature. Therefore, to be sure that your data is included, wait until 02:00 UTC on the following day.
You can always check your signal in real time on reversebeacon.net or skimmer.g7vjr.org.
Skimmers are not perfect. It often happens that calls are not copied correctly by skimmers and therefore a wrong callsign gets reported. You can find dozens of variations of some well known contest calls, with dots missing, etc. For example W3LPL frequently gets spotted as W3LP, W3RPL, LW3LPL,...
Another source of error is that multiband skimmers often suffer from receiver overload and nonlinearities, resulting in phantom spots on wrong bands. So if you called CQ on 40m but a Skimmer reported you on 17m, you might want to check your transmitter for spurious emissions to be sure, but it is more likely that a Skimmer was overloaded. This naturally happens most frequently with Skimmers where your signal is very strong on the fundamental frequency.
This site reflects exactly what the RBN spots, and I am reluctant to make any changes to the data I am receiving. Quite often, a callsign gets spotted with a missing last letter or some other miscopied parts, due to QRM, QSB etc. However, for every "busted" spot there are typically dozens of good spots, so they statistically don't matter and the accuracy of the report for your own callsign hardly suffers from this.
Last modified: 2021-12-10 - Fabian Kurz, DJ5CW <firstname.lastname@example.org>
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