However, for the time being it is not confirmed that Smolensk north had either RSBN or PRMG transmitter installed and operating.
It was rumoured in Poland, that such system was (temporarily) installed
before the April 7th visit of Tusk and Putin, and then disassembled before
the arrival of Kaczyński.
Of course tooted widely as part of conspiracy theory.
Blasted down with the argument, that the Tu-154 101 was anyway not capable
of using it, so it was put up for Putin only, and put down, for obvious reasons,
after he left. (If fact at all.)