[Milsurplus] More FCC foolishness
Mike Morrow
kk5f at earthlink.net
Wed Sep 15 21:23:47 EDT 2010
>: The ability to DF intermittent signals of even a few msec has been with
>: us for ten years. If a serious target gets on their radar you don't have
>: a chance of avoiding detection to a very high degree of accuracy.
>
>Now walk to the next room and the original location is useless.
The capability to DF even very short-lived intermittent HF signals is a
science that was perfected almost 70 years ago.
Just look at the British FH-4 HFDF set for an example. These were able
to point the signal's direction on a CRT display even in response to the
very short Morse burst signals of nearby U-boats. Huff-Duff was a very
effective system, as the Kriegsmarine found out.
Amazing technology, and not a microprocessor anywhere!
There's nothing new about instantaneous DF.
Mike / KK5F
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