[Scan-DC] FedEx field - NFL

[David I. Emery]

On Mon, Nov 16, 2009 at 08:33:00PM -0500, Bill wrote:
> Even tho it's voice inversion, it's a rolling [constant changing] code

	While it probably isn't appropriate to ask this... there are
rolling code systems that split the voice band into multiple chunks and
swap them around randomly in both time and frequency (old Parkhill KY-65 NSA
encryption of the early 80s), and some simpler ones that just fiddle
around with the supressed carrier inversion frequency every so often or
swap around a very limited number of spectrum chunks....

	Anyone know any actual details of this one ?   I presume it it
nbfm otherwise...


-- 
  Dave Emery N1PRE/AE, die at dieconsulting.com  DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
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