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

[Joshua Mesilane]

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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