[Elecraft] OT 20M Moving QRM

[Dave Cole]

See my private email to you Ken...
-- 
73's, and thanks,
Dave (NK7Z)

For software/hardware reviews see:
http://www.nk7z.net

For MixW support see:
https://groups.yahoo.com/neo/groups/mixw/info

For SSTV help see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


On Thu, 2016-03-03 at 14:44 -0700, Ken G Kopp wrote:
> On Mar 3, 2016 2:41 PM, "Ken G Kopp" <kengkopp at gmail.com> wrote:
> 
> > Dave,
> > 
> > You shouldn't make finite statements like this.  There are some of
> > us who
> > sometimes know better.
> > 
> > Sounders -do- come in a -wide- variety of formats ... many are
> > purposefully wide and use variable sweep rates so as not to be so
> > "visible".  Some move very slowly.  It all depends on the kind of
> > information being sought.
> > 
> > In a past life I lived / worked in the shadow of the NBS Labs in
> > Boulder,
> > who operates one within the City of Boulder.  There was another a
> > mile away
> > from our house in Longmont.  That one took about a minute to travel
> > across
> > 160M.  There is one at Weber State in northern Utah.  There are
> > hundreds
> > ... maybe thousands ... in operation all over the world.
> > 
> > I also worked at CU's radio astronomy Lab and used a receiver that
> > swept
> > 300 kHz to 300 MHz once every second 24/7, so we were all very
> > familiar
> > with the many, many ionosondes.  They make interesting ... and
> > varied ...
> > traces on the chart recorder.
> > 
> > BTW, if you know what to look for you can often see Jupiter's noise
> > on
> > your P3.
> > 
> > Then, there are the many wave radars, with several located in the
> > restrooms of Oregon's State Parks along the coast.  ( We were hosts
> > with
> > our RV parked about 100' from one.)  They're about 50 kHz wide.
> > Google
> > "Seasonde" for more info on these.
> > 
> > 73
> > 
> > K0PP
> > On Mar 3, 2016 1:19 PM, "Dave Cole" <dave at nk7z.net> wrote:
> > 
> > > That is not an ionosonde...  They are a pure carrier moving at a
> > > steady
> > > speed, and they sweep MUCH faster than that.
> > > --
> > > 73's, and thanks,
> > > Dave (NK7Z)
> > > 
> > > For software/hardware reviews see:
> > > http://www.nk7z.net
> > > 
> > > For MixW support see:
> > > https://groups.yahoo.com/neo/groups/mixw/info
> > > 
> > > For SSTV help see:
> > > http://groups.yahoo.com/neo/groups/MM-SSTV/info
> > > 
> > > 
> > > On Thu, 2016-03-03 at 11:16 -0700, Ken G Kopp wrote:
> > > > Google "Ionospheric sounder".  There are lots of them around
> > > > the
> > > > world that
> > > > operate 24/7 and this may be one of them.
> > > > 
> > > > 73
> > > > 
> > > > Ken Kopp - K0PP
> > > > On Mar 3, 2016 11:06 AM, "David Ahrendts" <davidahrendts at me.com
> > > > >
> > > > wrote:
> > > > 
> > > > > Does anyone recognize this moving QRM? Last evening 6:30pm.
> > > > > Band is
> > > > > dead.
> > > > > Ambient noise pretty calm. But notice the slowly moving noise
> > > > > bumps
> > > > > on the
> > > > > K3S SVGA display. Might this be weather radar?
> > > > > https://vimeo.com/157616344
> > > > > 
> > > > > David A., KK6DA, LA
> > > > > 
> > > > > 
> > > > > 
> > > > > David Ahrendts   davidahrendts at me.com
> > > > > 
> > > > > 
> > > > > 
> > > > > 
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