Re: [IRCA] Recent DXpedition to Grayland, WA & Florence, OR

[Kenneth Nawalkowski <kennethnaw@xxxxxxx>]

Hi Bruce,
              Can you or anyone else on this list check out the link you 
provided? It won't download for me. The page opens and the download stops at 
142.2kb/3.86mb.
   Kenneth


----- Original Message ----- 
From: "Bruce Portzer" <bportzer@xxxxxxxxxxx>
To: "Mailing list for the International Radio Club of America" 
<irca@xxxxxxxxxxxxxxxx>
Sent: Friday, August 10, 2012 12:56 AM
Subject: Re: [IRCA] Recent DXpedition to Grayland, WA & Florence, OR


> Here's a document that has ground conductivity maps for the entire 
> planet. 
> http://hamwaves.com/antennas/gnd-sigma/vlf_mf_ground_conductivity_atlas.pdf
>
> Note that maps 1-6 are for VLF, and the MF maps start with figure 7. 
> Canada is in there somewhere, along with Bangladesh, Iran, Namibia, etc 
> etc.
>
> This is probably the set to which Chuck was  alluding.
>
> Bruce
>
>
> On 8/9/2012 22:22, Chuck wrote:
> > Kenneth -
> >
> > I don't know, but I have it on a older PC that is not handy at the 
> > moment. Give me a day and I'll dig it out if you haven't been able to 
> > find it. My recollection is that the map was done by the ITU or CCITT as 
> > part of their somewhat worldwide set of ground conductivity maps.
> >
> >
> > Chuck
> >
> > On 8/9/2012 4:30 PM, Kenneth Nawalkowski wrote:
> > > Hi,
> > >     Are these soil conductivity maps for Canada available online? If 
> > > not, where might I be able to get them?
> > >    Kenneth Nawalkowski
> > >    Sandy Lake, MB
> > >
> > >
> > > ----- Original Message ----- From: "Walter Salmaniw" <canswl@xxxxxxxxx>
> > > To: "Mailing list for the International Radio Club of America" 
> > > <irca@xxxxxxxxxxxxxxxx>
> > > Sent: Wednesday, August 08, 2012 8:57 PM
> > > Subject: Re: [IRCA] Recent DXpedition to Grayland, WA & Florence, OR
> > >
> > >
> > > > I've seen similar maps for Canada.  The east side of the Rockies in 
> > > > Alberta
> > > > is supposed to be superb for MW DX, and it has been proposed that this 
> > > > is
> > > > due to the excellent ground conductivity.  Interesting thread,
> > > > indeed!........Walt
> > > >
> > > > On Wed, Aug 8, 2012 at 12:09 PM, Craig Healy 
> > > > <bubba@xxxxxxxxxxxxxxxxxxxx>wrote:
> > > >
> > > > > An important aspect of losing signal when going away from the shore is 
> > > > > the
> > > > > ground conductivity in that area.  That makes a significant coverage 
> > > > > change
> > > > > for any identical station by frequency, power and antenna. Local 
> > > > > stations
> > > > > like 1230, etc., cover far better in the middle of the US than in 
> > > > > places
> > > > > like New England.  The FCC has a PDF map that can be downloaded to 
> > > > > show the
> > > > > ground conductivity in the US.  Should be accurate for Canada near the
> > > > > border as well.
> > > > >
> > > > > http://www.fcc.gov/**encyclopedia/m3-map-effective-**
> > > > > ground-conductivity-united-**states-wall-sized-map-am-**broadcast-stations<http://www.fcc.gov/encyclopedia/m3-map-effective-ground-conductivity-united-states-wall-sized-map-am-broadcast-stations>
> > > > >
> > > > > Craig Healy
> > > > > Providence, RI
>
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