[Elecraft] OT 20M Moving QRM

[Ken G Kopp]

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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