[aprssig] Airborne Digis

[Neville A. Cross]

On Mon, Sep 14, 2009 at 6:07 PM, Gregory A. Carter <gcarter at openaprs.net> wrote:
> Hello All,
>
> For search and rescue use I'm trying to setup and implement an Airborne
> capable digi that will not cause interference but will respond to our
> trackers out in the field in remote uncovered (by digis) areas and get them
> into the APRS and APRS-IS network along with our local monitoring machines.
> As a result I'd love to hear input from anyone here who has experience in
> this situation.
>
> The problem that I can see is that I want our trackers to be able to use
> WIDE1-1,WIDE2-1 as the first digi hops so they are compatible with the
> existing network (specially if they are not complimented by our airborne
> digi) but I don't want the airborne digi slammed or slamming the APRS RF
> network.
>
> My thoughts were perhaps to set WIDE1-1,WIDE2-1,SAR1-1 and turning on
> preempting on our airborne digi setting it to only digi on SAR1-1.  My
> question here is, if the airborne digi preempts, hitting on SAR1-1 what
> happens on the RF network with the WIDE1-1,WIDE2-1, will they be skipped or
> will they be processed?
>
> DISCLAIMER:  I am not looking for a debate on whether or not an airborne
> digi should be used, I'm just looking for an honest reply to my questions or
> suggestion on how to make it work with the least amount of negative impact
> on the RF network.
>
> Thanks!
>
> Greg
>
> NV6G
> OpenAPRS.Net
>

I think that one way to reduce interference is to tx in a different
frequency. Set up a dedicated gateway where you can use a computer to
"smartly" decide what to do with the package overaload. I think that
if you can put more computer power on the air, you can make better use
of the download channel. But, I am just giving my two cents.


-- 
Neville
https://fedoraproject.org/wiki/User:Yn1v
Linux User # 473217