The antennas are about ten feet above ground. They're mounted to the building, no tower. Tom KD7LXL On Aug 19, 2017 1:12 PM, "W7ABD" <w7abd1@gmail.com> wrote:

Thanks for the info Tom!

I completely missed the lat/lot at the top of the pictures page...

Do you know the MSL (height of the haystack antenna). Seems I have missed that too...

Will be happy to share my method for path modeling once I get it up and running...

Thanks!

Jim W7ABD w7abd1@gmail.com

On 08/19/17 08:15, Tom Hayward wrote:

You can find the location published here: https://hamwan.org/Puget%20Sound%20Data%20Ring/Sites/Haystack.html

The antenna pattern is here: https://hamwan.org/Labs/Antenna%20Analysis/Ubiquiti%205G-19-120.html

Haystack has two of these, aimed at 0 and 240 degrees.

There is 500mw of transmit power at the antennas. The receiver threshold is about -90dBm, but -70 is required for full speed.

I'm always curious to hear about path modeling, if you want to share your methodology.

Tom KD7LXL

On Aug 19, 2017 8:05 AM, "W7ABD" <w7abd1@gmail.com> wrote:

...

I considering joining HAMWAN, but before I invest in the equipment want to make sure I will have good signal and bandwidth at my home QTH.

Can someone please send me the exact location (lat, lon) of Haystack, so I can do a line-of-sight study.

Thanks!

Jim W7ABD w7and1@gmail.com

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Actually, the model looks good to me: [image: Inline image 2] This is with Radio Mobile. The link is only 17.57km, so I'm not sure why you get a reported obstruction at 19.41km. One of us must be punching the coordinates in wrong. On Google Earth the trees look pretty tall. Trees are pretty good attenuators at 5.9 GHz, so you'll need clear line of sight for it to work. Tom On Sun, Aug 20, 2017 at 12:38 PM, W7ABD <w7abd1@gmail.com> wrote:

Hi Tom,

I used the Scadacore RF Line of Sight path modeling (http://www.scadacore.com/field-tools/rf-path/rf-line-of-sight/) This app has to be run on device that has google earth app installed, like an iPad.

Using these parameters:

Haystack Lat: 47.808024 Lot: -121.727227 Height: 3 m

My QTH Lat: 47.722862 Lot: -121.925666 Height: 10 m

From the looks of the plot, I have obstructed line of sight at 19.41 km. So unlikely Haystack will work. Will check out the other sites...

Jim W7ABD

On 08/19/17 14:04, Tom Hayward wrote:

The antennas are about ten feet above ground. They're mounted to the building, no tower.

Tom KD7LXL

On Aug 19, 2017 1:12 PM, "W7ABD" <w7abd1@gmail.com> wrote:

...

Thanks for the info Tom!

I completely missed the lat/lot at the top of the pictures page...

Do you know the MSL (height of the haystack antenna). Seems I have missed that too...

Will be happy to share my method for path modeling once I get it up and running...

Thanks!

Jim W7ABD w7abd1@gmail.com

On 08/19/17 08:15, Tom Hayward wrote:

You can find the location published here: https://hamwan.org/Puget%20Sound%20Data%20Ring/Sites/Haystack.html

The antenna pattern is here: https://hamwan.org/Labs/Antenna%20Analysis/Ubiquiti%205G-19-120.html

Haystack has two of these, aimed at 0 and 240 degrees.

There is 500mw of transmit power at the antennas. The receiver threshold is about -90dBm, but -70 is required for full speed.

I'm always curious to hear about path modeling, if you want to share your methodology.

Tom KD7LXL

On Aug 19, 2017 8:05 AM, "W7ABD" <w7abd1@gmail.com> wrote:

...

I considering joining HAMWAN, but before I invest in the equipment want to make sure I will have good signal and bandwidth at my home QTH.

Can someone please send me the exact location (lat, lon) of Haystack, so I can do a line-of-sight study.

Thanks!

Jim W7ABD w7and1@gmail.com

_______________________________________________ PSDR mailing list PSDR@hamwan.org http://mail.hamwan.net/mailman/listinfo/psdr

_______________________________________________ PSDR mailing listPSDR@hamwan.orghttp://mail.hamwan.net/mailman/listinfo/psdr

_______________________________________________ PSDR mailing list PSDR@hamwan.org http://mail.hamwan.net/mailman/listinfo/psdr

_______________________________________________ PSDR mailing listPSDR@hamwan.orghttp://mail.hamwan.net/mailman/listinfo/psdr

_______________________________________________ PSDR mailing list PSDR@hamwan.org http://mail.hamwan.net/mailman/listinfo/psdr