[OZAPRS] RGI/RBM/Griffith digis

[Matthew Cook]

Putting a rPi and 3G/4G dongle at remote sites is not particularly
expensive, APRS traffic is not that great (7-10MB) on a daily basis either
just quietly.   A pre-paid SIM on a 12-month expiry comes with 8-25GB now
days for $70-150/yr depending on carrier.

Food for thought.

73

Matthew
VK5ZM

On 1 November 2017 at 12:16, Dom Dahl <vk2hj69 at gmail.com> wrote:

> Hi Glen..
>
> Just wondering if you will have IP access at Ginini then you could set up
> 1RGI as an igate?
>
> RHR is now an igate as we have internet on site for the DMR repeater. We
> have noticed a big improvement in traffic getting through the APRS.IS
>
> The biggest problem RHR had was the igates located in Sydney 70+km away
> would get collisions and a lot of packets would not be reported. Since the
> upgrade it has made a huge difference in Performance.
>
> Anyway food for thought..
>
> Dom
> VK2HJ
>
> On 1 Nov. 2017 07:12, "Glen English VK1XX" <glenlist at pacificmedia.com.au>
> wrote:
>
>> Hi Josh
>>
>> thanks for the comments and suggestions on the delay question. Ginini
>> will have IP access so we can tweak the cfg.
>>
>> OK so you are saying Griffith <> Wagga Igate relies on Ginini to pass
>> the APRS traffic ?
>>
>> IE : USER >> Griffith Digi  >> Ginini  Digi >> Wagga Igate
>>
>> ? that's a long way round , and sees all the CBR basin traffic as
>> contention I guess.
>>
>>
>> On 31/10/2017 8:47 PM, Josh wrote:
>> > Hi Glen,
>> >
>> > I'm sort of familiar with the RGI digi, Graeme VK2HFG runs an igate
>> > north of Wagga and noted that when RGI went off-air, it effectively
>> > isolated Griffith's APRS RF traffic IIRC.
>> >
>> > I would not recommend adding a delay before digipeating. WB4APR outlined
>> > a number of reasons against that approach here -
>> > http://www.tapr.org/pipermail/aprssig/2013-March/041554.html
>> >
>> > If you did want to implement a delay on digipeated frames you'd have to
>> > set a DWAIT value on the channel, because digi'd frames are marked as
>> > high priority so bypass the normal SLOTTIME and PERSIST delays. That
>> > would also impact connected mode packets, and you wouldn't want that.
>> >
>> > Direwolf has a default DEDUPE value of 30 seconds, but it only applies
>> > to transmitted packets - not heard.
>> > DEDUPE *will* prevent RGI from digipeating as WIDE1 and then again as
>> > WIDE2 when RBM digis the original frame though because it only checks
>> > the from, to and body fields for duplicates, ignoring the path.
>> >
>> > - Josh VK2HFF
>> >
>> >
>> > On 31/10/2017 7:13 PM, Glen English VK1XX wrote:
>> >> Hi Josh
>> >>
>> >> thanks. yeah lots of what I read is workarounds to deal with old TNC on
>> >> mountains.
>> >>
>> >> So with our canberra / ACT infrastructure, with have right now
>> VK1RBM-1,
>> >> it's an old TNC . I dont know how it is configured, precisely.
>> >>
>> >> It has pretty good canberra metro coverage, right slap bang in the
>> >> middle of town.
>> >>
>> >> Then, a MACRO over all that is Mt Ginini, which the voice repeater on
>> >> the site has a reliable 100km range, 200km to average base stations....
>> >> (RHR is about 200km). it is REALLY wide.
>> >> coverage over canberra metro is pretty reasonable also, but it is 50km
>> >> from town.
>> >>
>> >> Ginini I was told had rather outdated setups, from the 90s. As you
>> know,
>> >> a new dire wolf box and radio is ready to go, takes a bit of
>> >> organisation to get to Ginini. 85km , weather etc
>> >>
>> >> My question is how should I configure this up, IE specifically the UI
>> >> DWAIT time- I think that's the parameter (or the Kantronics name for
>> it)
>> >> , IE do I want to have a long delay after it hears something to whether
>> >> it decides to repeat it ? IE so the local RBM in metro canberra does
>> the
>> >> bulk of the UI work . But if say a 2 seconds goes past , ginini says,
>> >> OK, no one local heard it, I will digipeat it
>> >>
>> >> or is that sort of operation problematic ?
>> >>
>> >> Or should locals have a specific configuration ?
>> >>
>> >> ginini is often used for connected mode traffic from east (on the
>> coast)
>> >> to west of the country (say wagga, albury) . but it does its share of
>> >> Hume Highway APRS work .
>> >>
>> >> have more questions about this, but this is part 1.
>> >>
>> >> wisdom sought.
>> >>
>> >> with thanks,
>> >>
>> >> glen
>> >>
>> >>
>> >>
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