[OZAPRS] Are 4 x iGates in Sydney too many?

[Jason Ball]

Why run a digi and consume more of the bandwidth when an igate would
suffice ?




On Fri, May 23, 2014 at 11:46 AM, Joshua Mesilane <josh at zindello.com.au>wrote:

> Rather than putting up another IGate, wouldn't it make more sense to run a
> fill-in digi. Are you within hearing range of another IGate, if you are
> you'd probably be better off running a Digi
>
>
> ---
> VK3XJM
> 0416039082
> josh at zindello.com.au
> http://www.zindello.com.au/
>
>
> On Fri, May 23, 2014 at 11:44 AM, Jason Ball <jason at ball.net> wrote:
>
>> There are a lot of holes left around Sydney with the loss of vk2us, lots
>> of black spots as it's a reasonably hilly place.    I'm planning on
>> recommissioning my igate once I put up another dual band antenna for it as
>> I find I can catch quiet a few stations that are missed by the other gates
>> aa I have a little more elevation to work with.
>>
>> Its been a while since I've checked but the 2m frequency wasn't all
>> _that_ congested.   There is some activity that may result in a new CBD
>> based digipeater, but I won't go in to details until this has progressed
>> beyond the hopeful planning stage.
>>
>> I don't see the amount of aprs traffic in sydney posing any particular
>> problem for the servers, its not _that_ busy. (or at least... it wasn't...)
>>
>>
>>
>>
>>
>>
>>
>> On Fri, May 23, 2014 at 11:36 AM, <vk2ycj at bravo.net.au> wrote:
>>
>>> Dave,
>>>
>>> Can you explain something to me ?
>>>
>>> I assume that in a heavily populated area there can be one or two iGates
>>> for Internet connectivity and as many digipeaters as you can muster - to
>>> help get better and better coverage to the whole area and the blackspots.
>>>
>>> If all of this is done on 145.175 MHz then things can get congested
>>> pretty
>>> quickly with heavy traffic - and packets will be lost.
>>>
>>> Are there any working examples where people have put in dual frequency
>>> digipeaters - where the primary frequency is 145.175 MHz and an extra
>>> 70cm
>>> frequency is used as the dedicated link to the nearest iGate ?
>>>
>>> Would such a system help with congestion and reduce the loss of packets ?
>>>
>>> My APRS kit came from the Oxley Region Amateur Radio Club and is a little
>>> beauty.  It uses a UV-5R handheld radio as the RF device which works
>>> pretty well with a decent antenna on the roof of the car - but at only 2
>>> watts output it just cannot compete with other stations running 30-50
>>> watts so in busy times my signal doesn't get through and gets squashed.
>>>
>>> Assuming the nearest digipeater hears my signal is there any guarantee
>>> that the data gets through from that digipeater to the iGate ?  So do
>>> digipeaters and iGates have a special relationship to get the data
>>> through
>>> at any cost ?
>>>
>>> And another question relating to Newcastle.   Our main digipeater is up
>>> on
>>> the Sugarloaf Range and the nearest iGate is on a large building in
>>> Hunter
>>> Street West - in the Newcastle CBD.  If I'm driving around Newcastle City
>>> do my APRS packets have to go via the Sugarloaf digipeater and then to
>>> the
>>> igate - or if I am close to the iGate will it accept my packets ?
>>>
>>>
>>> Very interesting stuff, thanks, Jamie VK2YCJ
>>>
>>>
>>>
>>> > Unfortuately there is no longer a digi in a good coverage area. ARNSW
>>> are
>>> > consideringthe possibility  puting one a Dural, but not until the
>>>  current
>>> > tower is replaced , which may be 12 - 18 months.
>>> >
>>> > It would be good to get one back on  the top of a CBD / North Sydney /
>>> > Chatswood  building for coverage.
>>> >
>>> > Dave vk2jdh
>>> > Date: Thu, 22 May 2014 21:47:13 +1000
>>> > From: vk2him at gmail.com
>>> > To: ozaprs at aprs.net.au
>>> > Subject: [OZAPRS] Are 4 x iGates in Sydney too many?
>>> >
>>> >
>>> >
>>> > I've noticed we now have at least 4 x iGates
>>> >  in Sydney, I would have thought that's too many and may be adding
>>> extra
>>> >  loads on the sever as they all gate the same traffic?
>>> >
>>> > Ian vk2him
>>> >
>>> >
>>> >
>>> >
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>>>
>>>
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>>
>>
>>
>> --
>> --
>> Teach your kids Science, or somebody else will :/
>>
>> jason at ball.net
>> vk2vjb at google.com <vk2flnx at google.com>
>> callsign: vk2vjb
>>
>>
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>>
>


-- 
--
Teach your kids Science, or somebody else will :/

jason at ball.net
vk2vjb at google.com <vk2flnx at google.com>
callsign: vk2vjb
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