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87 Do you know anything more about the AN/ASD-5 'Black Crow' truck ignition system sensor? (United States Air Force Gunships in the Vietnam)




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This article is from the Vietnam FAQ, by Brian Ross, John R. Tegtmeier, Edwin E. Moise, Frank Vaughan, John Tegtmeier with numerous contributions by others.

87 Do you know anything more about the AN/ASD-5 'Black Crow' truck ignition system sensor? (United States Air Force Gunships in the Vietnam)

Detailed knowledge of the system required a much higher pay grade than
I had. However, here is what I think I know: it was a device that
would pick up the electronic "noise" of a spark crossing the gap on a
spark plug. I believe that it could work as far away as the horizon,
and I recall the BC operator vectoring us into to convoys. A good
operator could also let us know if the trucks were new or old, and if
they were moving or idling, simply based on the quality of the signal.
It certainly did not pinpoint a truck for us, but got us in the
neighborhood.

 

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