[chbot] Long distance data link, advice from the guru's please

[Richard Jones]

The line of sight rule can be interesting. From my lounge window in
Diamond Harbour I can communicate using a hand held 5W radio with our
Tait DMR base stations at 156MHz on Dyers Pass Road by the green and
540 Wairakei Road near the airport. I put this down to diffraction on
the sharp edges of the port hills.

Richard

On Sat, May 10, 2014 at 10:34 PM, Mark Beckett <m.beckett at amuri.net> wrote:
> Yep that right, but he has another thats lower at Halswell (about 300m)
> My Gridpack is on a pole on the roof to clear the 4m hedge, and we can get
> 3.5 - 4Mb/sec.
>
>
> I think you'll find that the satellite uplink is probably 128Kb, and the
> down is 256/512kb.
> The problem is that its limited to a total of 4GB/week.
>
> Adding a second modem is not going to help with the total limit.
>
>
> Unlike us in NZ who have poor broadband, my Australia friend complains when
> he has to plug his computer in the get faster than his 54MB WiFi ...
> I imagine our American friends are probably similar, and used to fast almost
> unlimited internet.
>
> Mark
>
>
>
>
> Helmut Walle wrote:
>>
>> If "Gondola" is the restaurant on Mt Cavendish, then that's equivalent to
>> a 400 m mast...
>>
>> On 10/05/14 21:25, Mark Beckett wrote:
>>>
>>> My wifi is 32km link to the Gondala, and uses a gridpack antenna and
>>> licenced 600mW AP unit.
>>>
>>> Even with good antennas at both ends, I doubt you could extend it to
>>> 110km.
>>>
>>>
>>> Problem with most of these is that its "line of sight", so unless you can
>>> put something in-between you're stuck.
>>> Might be easier to move the Mainland, or use carrier pidgeons to
>>> transport the SD cards.
>>>
>>> Mark
>>>
>>>
>>>
>>> Richard Jones wrote:
>>>>
>>>> Tait Radio Communications spun off a company called MimoMax that
>>>> specialises in data links: http://mimomax.com/ This kit is completely
>>>> licensable and uses diversity to achieve almost unbelievable bandwidth
>>>> over a narrow band. This kit probably does not achieve 110km, but you
>>>> could ask them.
>>>>
>>>> The best I've managed with Wifi type technology requiring no license
>>>> is about 4km.
>>>>
>>>> I suspect when you discover cheap broadband link that does 110km you
>>>> will be able to give up your day job :-)
>>>>
>>>> Best of luck with the visit.
>>>>
>>>> Richard
>>>>
>>>> On Sat, May 10, 2014 at 9:03 PM, Jasper Mackenzie
>>>> <jasper.mackenzie at gmail.com> wrote:
>>>>>
>>>>> Good day fellow ROboticisers,
>>>>>  I have the privilage of flying off to visit my gf's family in Alaska
>>>>> (you
>>>>> know, the cringing Meet The Family awkward silences...), and her Dad
>>>>> runs a
>>>>> lodge for people to show off their enormous lenses and fancy new
>>>>> gigapixel
>>>>> cameras and glut out on Bears and stuff etc.
>>>>>
>>>>> Anyway, he has bandwidth issues, all these fancy photographers want to
>>>>> upload photos etc etc and he has one sattelite link limited to 4gb per
>>>>> week.
>>>>> So I was thinking that maybe they could do a VHF (or similar) link to
>>>>> the
>>>>> mainland which is 110km away across the sea. I have found a russian
>>>>> company
>>>>> that had an interesting solution, but all seemed to need towers ~90m
>>>>> tall
>>>>> which would be a massive hazard as small planes are what these
>>>>> outlanders
>>>>> use to get around.
>>>>>
>>>>> Is there a solution? A data link with usable bandwidth for image
>>>>> uploading,
>>>>> VoIP etc. that could work over 110km without a huge tower, that I could
>>>>> get
>>>>> before june 1st? (Lets deal with licensing later 8)
>>>>>
>>>>> Cheers
>>>>>
>>>>> Jasper
>>>>>
>>>>> _______________________________________________
>>>>> Chchrobotics mailing list Chchrobotics at lists.linuxnut.co.nz
>>>>> http://lists.ourshack.com/mailman/listinfo/chchrobotics
>>>>> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
>>>>> Web site: http://kiwibots.org
>>>>> Meetings 3rd Monday each month at Tait Radio Communications, 175
>>>>> Roydvale
>>>>> Ave, 6.30pm
>>>>>
>>>>> When replying, please edit your Subject line to reflect new content.
>>>>
>>>>
>>>> _______________________________________________
>>>> Chchrobotics mailing list Chchrobotics at lists.linuxnut.co.nz
>>>> http://lists.ourshack.com/mailman/listinfo/chchrobotics
>>>> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
>>>> Web site: http://kiwibots.org
>>>> Meetings 3rd Monday each month at Tait Radio Communications, 175
>>>> Roydvale Ave, 6.30pm
>>>>
>>>> When replying, please edit your Subject line to reflect new content.
>>>>
>>>
>>> _______________________________________________
>>> Chchrobotics mailing list Chchrobotics at lists.linuxnut.co.nz
>>> http://lists.ourshack.com/mailman/listinfo/chchrobotics
>>> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
>>> Web site: http://kiwibots.org
>>> Meetings 3rd Monday each month at Tait Radio Communications, 175 Roydvale
>>> Ave, 6.30pm
>>>
>>> When replying, please edit your Subject line to reflect new content.
>>
>>
>>
>> _______________________________________________
>> Chchrobotics mailing list Chchrobotics at lists.linuxnut.co.nz
>> http://lists.ourshack.com/mailman/listinfo/chchrobotics
>> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
>> Web site: http://kiwibots.org
>> Meetings 3rd Monday each month at Tait Radio Communications, 175 Roydvale
>> Ave, 6.30pm
>>
>> When replying, please edit your Subject line to reflect new content.
>>
>
> _______________________________________________
> Chchrobotics mailing list Chchrobotics at lists.linuxnut.co.nz
> http://lists.ourshack.com/mailman/listinfo/chchrobotics
> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
> Web site: http://kiwibots.org
> Meetings 3rd Monday each month at Tait Radio Communications, 175 Roydvale
> Ave, 6.30pm
>
> When replying, please edit your Subject line to reflect new content.