Just in the last few minutes I have logged into remote Perseus receivers
near Vancouver and Seattle and the spectrum in and around 4286khz is
normal with no indication of any wide band noise.
The sound of Stanag 4285 has a harsh repetitive sound that I sure would not
call white noise.
I don't know what you and others are hearing (I am curious too) but I don't
see anything here to associate it with the signal on 4286 khz. I have some
spectrum screen grabs I could post but this reflector doesn't allow
attachments.
I don't think this is related but will mention it in case someone has
noticed this too....
Much of this winter/spring I have observed a fast pulsating sounding
sweeping signal (somewhat like the Chinese OTHR on 40m) on the lower end of
80m in our evenings. It can on for several minutes and then off for what I
would call irregular times - no on/off pattern that is obvious to me. It
starts below 80m and comes up to maybe 3750, the edges aren't well defined
and it isn't that strong here. Using the 80m 4 sq the signal peaks to my
SW. It has been heard by others in southern Alberta and Northern BC (many
hundreds of km distant) at the same times so it certainly isn't too local.
On rare days I have also noted it on 160m in the 1900 khz area.
73 Don
VE6JY
On Mon, Apr 28, 2014 at 5:53 PM, Kenneth G. Gordon <kgordon2006@frontier.com
> wrote:
> On 28 Apr 2014 at 17:19, Don Moman VE6JY wrote:
>
> > As other have said STANAG is very common on HF. I have used SIGMIRA
> > software in the past to decode it.
> >
> > I hear the signal on 4286 khz very loud here at almost any time, even now
> > (almost midday) it is strong so I'd suspect the signal would come from
> CFS
> > transmitters near Matsqui, BC. I do not know this for a fact so don't
> turn it
> > into one. I do know that the signal observed here is less than 4 khz
> wide and if
> > it was truly as wide as you claim (over 3 mhz), that would be a serious
> issue
> > and would be widely reported by the many amateurs in the PNW.
>
> Within the last half-hour, it has been reported to me from at least 6 other
> hams all who live within 10 miles of me...and by one who lives 100 miles
> north of me.
>
> ALL of them report very serious interference which they were never able to
> "characterize" nor find the source since it sounds so very much like
> extremely loud "band noise" or "white noise".
>
> I suspect that very, very few hams would even recognize it for what it
> actually
> is, and thus it would never be reported.
>
> Ken W7EKB
>
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