[time-nuts] PN sequence generation using GPS

[scmcgrath at gmail.com]

Hi Chuck

I'd see you on my waterfall display.  A flexradio is a wonderful thing.  The Icom 7x00'es would also see the energy and display it.

73 - Scott N1JIN
Sent from my Verizon Wireless BlackBerry

-----Original Message-----
From: Chuck Harris <cfharris at erols.com>
Sender: time-nuts-bounces at febo.com
Date: Fri, 25 Feb 2011 10:31:32 
To: Discussion of precise time and frequency measurement<time-nuts at febo.com>
Reply-To: Discussion of precise time and frequency measurement
	<time-nuts at febo.com>
Subject: Re: [time-nuts] PN sequence generation using GPS

Hi Scott,

Speaking as a ham, I can tell you that no one will even notice that
you are there.  Frequency hop SS signals, when done correctly, only
land for a few milliseconds at seemingly random frequencies within
their band.  Because their PN sequence makes them appear random, there
aren't any identifiable rhythms to their signals that would signal their
presence... just a slight increase in background noise.  They really
aren't noticeable with the usual narrow bandwidth tuned rice boxes
that most hams use.

I have played extensively with frequency hoppers, like the PRC117, and
absent a wideband receiver, that covers their entire band, you would
never know they are there.

-Chuck Harris

scmcgrath at gmail.com wrote:
> Speaking as a ham,  if this is tried you will have hams complaining and DF'ing the offending signal.
>
> Chuck, you are correct in that no one but the hams care but the reason behind this is that policing the ham bands has
> been delegated to the hams and specifically certified 'Official Observers'.  Once a infraction and especially
> a.unlicensed infraction is noted penalties are pretty severe and swift.
>
> If you want to do this get a 'experimental license' Sent from my Verizon Wireless BlackBerry

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