[OZAPRS] Sydney NW repeater

Gerard Hill vk2io at amsat.org
Fri Nov 13 01:41:22 EST 2009


Thanks Richard and Mark for your comments.

Mark Cheeseman wrote:
> Richard Murnane wrote:
> 
>> WICEN chose to use 145.200 instead of the "right" frequency to avoid  
>> any impact on normal APRS operators (or vice versa). It was the first  
>  > time we used APRS on the event (the Hawkesbury Canoe Classic), so
>  > everyone thought it best not to tempt fate by using the same channel.

I certainly thought it was the right thing to do for an exercise to have 
it away from the National frequency. Sorry if I gave the wrong 
impression. You'll probably try a similar arrangement next year as it 
means less chance of collisions so quicker message delivery. There will 
probably be more mobiles too.

> For those who are interested, we basically ran 3 full WIDEn-n digis to 
> give us saturation coverage of the Hawkesbury river: at Kurrajong, 
> Berowra and Wiseman's Ferry. But with considerable overlap between at 
> least two of the digis and the existing network, putting them on the 
> APRS channel would have caused a lot of unnecessary digi traffic for all 
> concerned.

I expect you mean overlap between the Kurrajong digi and VK2RSW-1 and 
also the Berowra digi and VK2BTQ-1. Think the idea was to have much 
wider coverage on the WICEN digis than the fill-in digis on the national 
APRS network.

>> Peter Mudie ran an I-gate, so net control was able to monitor  
>> movements using http://aprs.fi
> 
> Actually, I ran that from my place, since I have a good path to all of 
> the digis, and didn't have to contend with a digi here as well.

Thanks for gating the traffic. I followed it with interest via the 
internet feed.

> -Mark VK2XGK

Cheers ... Gerard, VK2IO
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