Thanks Beamscanner.
It definitely seems that BSK may have misunderstood their doc sources when coding the SEARCH button as initially simulated, as many posted before.
Regarding the PRF audio debate, things get a little bit more delicate, due to the simulated ALR-87 being such an unknown model. The fact of having a HANDOFF button on the panel could suggest that the system has that capability. On the other hand, the button could also have been carried on from the ALR-46 to save costs on certification, and the button could have no function on the ALR-87 as stated on the DCS F5E manual...
As long as the SEARCH button gets fixed I can live with the rest :)