Query Plotting event

[Sketco]

I hope someone can clear up a conundrum (to me anyway).
Bearing in mind, I am a quite new user of Radarbox, so there's plenty of room for operator error.
I am also aware that more often than not mil flights do not plot to screen.

That said. This is what occured.
I had the opportunity today to have some time well wasted in front of the screen.
At 09:46, up pops

C2B39B  CFC3701 144614   Canada - Armed Forces 2011/12/22 09:46:25
Squawk: 2726 (Transit (ORCAM) Shannon).

The Canadair CC-144B Challenger remains in "MyFlights" for 8 minutes but unplotted.
No news there that's most often the case with mil flights and some others.

I post a heads up to a forum I'm a member of, hoping someones got comms already while I'm scanning the receiver for it. Having no plot, I guesstimate its general locale based on the known coverage of my airnav box.

Here's where it gets odd. Within minutes of my post a couple of members are all over this flight and pinpoint its location,(declaring it plotted on their screen) which by now is well out of my radarbox range.

So, I start up my network flights, apply a filter for this aircraft, but get nothing. Meanwhile, and some time later, it's reported heading toward Paris. Again, nothing from the network, nothing from the filter.

I'm hoping someone can shed some light on this.

I'm left wondering:
I know they operate a different product: Is this a windup?
There's a setting I can't see or don't know about?
It's a known quirk of radarbox?

Any ideas appreciated
Cheers

[tarbat]

They were probably using Multilateration in Planeplotter, which allows non-ADS/B aircraft to be plotted.  See http://www.airnavsystems.com/forum/index.php?topic=4578

[Sketco]

Once again, saved by the Tarbat.
Belay all after "I hope someone can clear up a conundrum (to me anyway)."

Job Done. Many thanks

[SpeedWagon]

I have seen one or more of the CC-144Bs on Flightradar24 a couple of times.  In fact used their playback feature to trace it from Ottawa to either Comox or Vancouver.  As it was on the screen over Saskatchewan so I am guessing it was not being tracked with MLAT, not too many receivers in the Canadian prairies.

[Sketco]

Interesting. Thanks Speedwagon.
But you never know what's hiding in those prairie sentinels. LOL. Longest drive of my life on the trans-canada Toronto to Cupar