No idea
I see
Yes, for older RWR’s the only way to tell the specific systems apart was to know what it should sound like, since you only had a series of band indicator, & and mode lights to go off otherwise.
The APR-39A for example of a threat library and a “synthetic map display” (no longer direct output of antenna) and a speak & spell chip to provide head up capability.
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It’ll resurface when we get either FRS.51 or GR.9A
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Well, FRS51 would be the other chat
