Correct Skull, in Batumi, Sogalung and Vaziani there aren´t any compatible radioaids with the Sabre and Fagot.
Radionavigation beacons and aids are defined in the beacons.lua file. These are defined with a object atached and these objects, if destoryed, make the signal fails.
This file is only ued at this moment by ED and BST modules. Thrid parties make their own files (I don´t known why)
For example, LN MiG-21 allows 72 frequencies defined by the user and 99 RSBN/PRMG but the real ARK-10 only supports 26. The near-far selector in the Fishbed makes nothing. In the real system, beacons are stowed in the push buttons for the "near" and 16 in the rotary selector for the "far".RSBN-6 allows only between 20-30 stations I think, and these presets are diferent for a RSBN and a PRMG station.
The switches Azimut and Bearing with the rotary not in use in the RSBN panel in the LN MiG allows to input a distance in the counter, so the pilots can select a NDB and put the desired distance.
In the Mission Editor we can see the channels of the PRMG in the military russian airports (the blue numbers in Mozdok, Krasnodar, Krymsk..)
I think that until we´ve got a L-39 Albatross we can´t use properly the russian radionavs.
I expect that in the 2.0 we colud make the assignations for the beacons for the planes in the ME, like in the Fagot.
Sorry for my english.