Ray Wells vk2tv at exemail.com.au
Sat Feb 2 17:21:32 EST 2013


Oops, I should have said that these days I feed very little from IS to 
RF, just weather bulletins for three districts in this part of NSW. My 
example is what I used to do to try to create interest and, it worked.

Ray vk2tv

On 02/02/13 17:14, Liz wrote:
> On Sat, 2 Feb 2013 11:09:12 +1030
> "Paul Mullins" <pmullins at adam.com.au> wrote:
>> Hi there all,
>> Its been a while from my last post, I have an idea. I have no idea if
>> this has been implemented anywhere in the world but this idea could
>> be done.
>> I have been thinking about the way that the APRS network works, now I
>> might be wrong with fully understanding the network but this is my
>> idea.
> snip....
> I've also read the other relies so far.
> I live on the edge of the APRS universe, and travel around, so I see
> two sides to this.
> I have a digipeater and IGate, and also put packets from APRS-IS to RF
> from within a specific geographical area (which is further away from
> the APRS universe again.
> Unlike the Kempsey example, I don't pull much from APRS-IS to transmit.
> The stations I am picking up are actually on HF or directly using
> APRS-IS through the telephone system.
> My transmitter isn't that busy, you can check the stats on aprs.fi if
> interested. I am still receiving signals from at least 300km away, and
> I choose not to digipeat those distant signals.
> However, down on the coast, the radio in the car is constantly going
> 'bip' for another incoming packet. The frequency was crowded to my
> rural ears, and I was receiving packets from as far away as 140km, and
> thinking "I'm in Wollongong, why am I getting aprs packets from
> Wyong?" (140km)
> Or in Canberra, "why am I getting weather from Parkes
> (NSW), Orange and Yarramundi?" all of which are about 250km distant.
> Paul, I'd like to thank you for bringing up the topic. I see options
> with more thoughtful filtering on digipeaters, so that packets which
> are from a long distance, which is differently defined according to
> population density. Of course for those wishing to get their packets to
> APRS-IS we would need a larger number of IGates for redundancy - no one
> has 100% uptime on their internet connection.
> Liz VK2XSE
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