correct as is NCTR should not be initiated by the pilot.

[WHOGX5]

In Wags NCTR video he "initiates" NCTR with TMS Left Long. This is incorrect. NCTR is a "passive" mode insofar that it is constantly running when you have an STT lock; it is not initiated by the pilot. The reason you need to use TMS Left to perform an IFF Interrogation is that the aircraft actually needs to send out an interrogation pulse in order to trigger a response from the transponder of the interrogated aircraft. With NCTR, all your radar does is analyze different parameters of the returning radar energy from the STT lock in order to determine aircraft type. That is also why it only works in STT, because you can't really perform the necessary analysis from a mode like TWS where the radar only sweeps over the target instantaneously. If NCTR was performed using TMS Left you'd simply have to spam TMS Left until you actually get a postive ID when in STT which would only add to pilot workload with zero benefit.

 

[BIGNEWY]

We have very clear documented evidence that TMS Left Long is required

Please PM me any unclassified evidence to support your claim. 

thanks

[llOPPOTATOll]

BN is correct, you need to TMS Left long. However it should be possible to use NCTR without going to STT