[HamWAN PSDR] Kirkand / Rose Hill Coverage

Don Sayler don.sayler at gmail.com
Wed May 6 12:53:08 PDT 2015


That's hard to see on my phone, so I'll look at it this afternoon when I
get home.

On Wednesday, May 6, 2015, Tom Hayward <tom at tomh.us> wrote:

> On Wed, May 6, 2015 at 9:09 AM, Don Sayler <don.sayler at gmail.com
> <javascript:_e(%7B%7D,'cvml','don.sayler at gmail.com');>> wrote:
>
>> Oh, the water tower obscures the horizon to the east, but west is clear.
>> And we probably have 70-80 feet available on the tower.
>
>
> That's no good. Here's the link prediction from my last message plotted in
> Google Earth. Looks like the water tower blocks the shot to Haystack. Is
> that tower location correct?
>
>
>
> I've attached the .kml so you can see it in 3d.
>
> Snohomish County DEM (north) and Capitol Park (southwest) are also
> options. They're predicted at about -70 dBm.
>
> By the way, the coverage map is digital (coverage or no coverage). A red
> pixel indicates coverage better than -70 dBm. Anything less than that we
> don't plot. Any shading you're seeing is just how it's displayed--it's not
> indicating a different signal level. A signal level of -70 dBm will give
> you "full speed" on the network. The modem can maintain a connection down
> to about -88 dBm, but it won't be as fast. The map is conservative in that
> nothing between -70 and -88 dBm is plotted. Also keep in mind that the map
> doesn't know what trees or water towers exist around your property. (It
> does some primitive land cover adjustments, but I've found binoculars or
> Google Earth to be more accurate.)
> ‚Äč
> Tom
>
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