[HamWAN PSDR] Who has short clean LoS to Cougar?
Bart Kus
me at bartk.us
Wed Oct 16 22:54:22 PDT 2013
Good stuff! Try to grab it from a place where we might leave a dish,
and house a yet-to-be-weather-proofed amplifier. *Short* runs of LMR400
might be OK, but the attenuation/ft is really high @ 6GHz. The
amplifier looks a little like this, and it makes noise when it runs:
http://www.avalonamprepair.com/hughes_1177h-series.jpg
http://www.avalonamprepair.com/hughes_1177h-series.jpg
We'll dangle a 5SHPn modem with a 20dB attenuator off the RF INPUT port,
and then attach the antenna to the RF OUTPUT port. We'll have to turn
down the power on the radio to just +20dBm so as not to saturate the
amplifier. It only needs about 0dBm for full +40dBm output.
--Bart
On 10/16/2013 8:06 PM, Kenny Richards wrote:
> This picture really sucks, since it was taken free hand with my
> iPhone, but it sort of give you an idea of the shot to the radio
> towers. This is taken from my front yard, the red 'dots' are the
> lights on the towers to keep planes from flying into them.
>
> http://www.ku7m.net/drop/CougarRadioTowers.png
>
> It is suppose to be clear tomorrow, so I'll try to grab a better
> picture in the morning.
>
> Kenny
>
>
>
>
> On Wed, Oct 16, 2013 at 5:32 PM, Kenny Richards <richark at gmail.com
> <mailto:richark at gmail.com>> wrote:
>
> I would be lying if I said the location wasn't a big part of why
> we picked the house. :-)
>
> Sent via radio waves!
>
> On Oct 16, 2013, at 5:29 PM, Steve <stevewa206 at gmail.com
> <mailto:stevewa206 at gmail.com>> wrote:
>
>> Dang... Can I move into your place Kenny? :)
>>
>> Stve N0FPF
>>
>>
>>
>>
>> On Wednesday, October 16, 2013, Bart Kus wrote:
>>
>> Got pix of the towers from your location? When might I be
>> able to come over and inspect the situation in person?
>>
>> --Bart
>>
>> On 10/16/2013 4:00 PM, Kenny Richards wrote:
>>
>> I have line of sight to the radio towers on cougar. I'm
>> about 3 miles as the crow flies...
>>
>> Sent via radio waves!
>>
>> On Oct 16, 2013, at 1:47 PM, Bart Kus <me at bartk.us>
>> wrote:
>>
>> Hi all,
>>
>> Is there anyone on list who lives close to Cougar and
>> has a clean line of sight to it? Issaquah highlands,
>> Sammamish plateau, etc? I'm looking for a volunteer
>> to point some equipment @ Cougar towers from a nearby
>> ground location. We'll leave it installed for 2-4
>> weeks to run the experiment.
>>
>> Oh, and the experiment has to do with scatter
>> communications, utilizing radio towers as reflectors.
>> You'll get a 30dBi dish and a 10W 6GHz amplifier for
>> a whopping 10kW EIRP. It'll send out beacons with
>> your callsign, and we'll try to pick them up around
>> the Puget Sound.
>>
>> Fun times!
>>
>> Let me know if you can help,
>>
>> --Bart
>>
>>
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>
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