[HamWAN PSDR] Haystack coming up as a 2nd gen site
Dean Gibson AE7Q
hamwan.stuff at ae7q.com
Thu Jul 31 21:43:03 PDT 2014
I have an Air Force "student" pilot taking an ATP flight check Saturday
until 3pm, or I'd be there.
If the flight check is scrubbed (30% possibility), I can be with you all
day Saturday.
I won't know until this time tomorrow evening.
On 2014-07-31 15:46, Bart Kus wrote:
> Just as an update, I have 0 volunteers so far.
>
> --Bart
>
>
> On 07/29/2014 11:58 AM, Bart Kus wrote:
>> Just got word the deploy will be Saturday.
>>
>> --Bart
>>
>>
>> On 7/28/2014 11:26 PM, Bart Kus wrote:
>>> Hello,
>>>
>>> After some discussion we decided to deploy Haystack as a 2nd
>>> generation site. It has a huge view of the Puget Sound, it will
>>> have a very fast uplink (via the new Queen Anne facility), so it
>>> will do well with the extra throughput capacity. What this means is:
>>>
>>> 1) The sector modems are dual-channel (MIMO, RB911) instead of
>>> single-channel (SISO, Metal). This, in theory, doubles speed while
>>> still using the same bandwidth.
>>> 2) The sector antennas are dual-polarity, and higher gain to
>>> (mostly) compensate for the power loss of going to the lower-powered
>>> MIMO modems
>>> 3) The sector antennas and dishes feature shielding materials to
>>> minimize interference between the radios
>>> 4) All the modems are in metal enclosures to prevent any stray
>>> radiation and interference
>>>
>>> This 2nd gen architecture is fully compatible with 1st and 2nd gen
>>> clients. Going to a 2nd gen client may not actually be the
>>> speediest thing for you! The 1st gen client setup (Metal 5SHPn +
>>> Poynting 30dBi grid) offers better gain + EIRP than a typical RB912
>>> + 2ft dish 2nd gen client setup. That added signal power may
>>> actually prove to achieve faster speeds than the added 2nd channel
>>> of dual-polarized MIMO signals when your signal levels are low. If
>>> your signal levels to the site are high, then switching to a 2nd gen
>>> client should be beneficial.
>>>
>>> I have footed the $601 bill (shipping included) for the upgrade. I
>>> have also allocated one of my personal MIMO sector antennas (~$150
>>> value) to the cause. If someone feels like raising a vote to
>>> compensate me fully or partially, that'd be awesome.
>>>
>>> The reason for the rapid action is I got word our site sponsor would
>>> like to deploy this weekend. I'm not sure if the hardware will make
>>> it in time at this point, but at least I tried. If it doesn't make
>>> it, we'll do a 2nd round of deployment later. There's plenty of work
>>> to be done at the site with installing the mounting points and solar
>>> power system.
>>>
>>> BTW, if you'd like to volunteer your time and energy, the deployment
>>> is sometime this weekend. The mountain is near Sultan, WA. I don't
>>> know which day(s) we're going up. Let me know if you'd like to help.
>>>
>>> Thanks,
>>>
>>> --Bart
>>>
>>>
>>> _______________________________________________
>>> PSDR mailing list
>>> PSDR at hamwan.org
>>> http://mail.hamwan.org/mailman/listinfo/psdr_hamwan.org
>>
>>
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