[OZAPRS] Re: Re: Your signal....

[Tony Hunt]

David the Gate bit is the standard GATE alias which is designated for HF
Gateways. They dont Digipeat on HF but they Cross digi sometimes back to VHF
Networks especially if they have no direct connection to the Internet. So
the Gate bit tells the HF Gatways that this frame is destined for the
Internet or the VHF Port.

The WIDE2-1 bit is there to make the frame propagate at least 1 hop into a
Digi on the VHF network after its crossed from HF. This is so that the frame
can reach an Igate which is monitoring the VHF Net and gating it to the Net.
It all works assuming that the HF Gate is only 1 hop away from an Igate. We
used to use GATE,WIDE2-2 a bit but the Igates are generally within 1 hop in
most places to get the frames but just raising this point may be enough to
get another thread going.

On Satellite work we use SGATE instead of GATE as a alias on the Sat Gates.

I use a package called Digi_Ned with AGW or BPQ32 and it has some
customisable smarts in it so that if it sees a HF frame with No vias or the
wrong ones on it it Gates it to VHF as a rule.

The best way to make sure you dont get gated to the Internet anywhere on the
systems is to use a NOGATE or RFONLY as the last via on your path.

Tony vk5ah

----- Original Message ----- 
From: "David and Justine Olsen" <davejust at bigpond.net.au>
To: "Tony Hunt" <wavetel at internode.on.net>; "Australian APRS Users"
<ozaprs at aprs.net.au>
Sent: Thursday, April 02, 2009 9:34 AM
Subject: Re: [OZAPRS] Re: Re: Your signal....


> Tony
>
> When we do not have digipeating enabled on HF, what does the WIDE2-1 do?
>
> David
>
>
>
> On 1 Apr 2009, at 23:19, Tony Hunt wrote:
>
> > Hey Guys ,  Jack and David
> >
> > Just noticed a couple of wrong things going on .. I think your on
> > 40m.. I am
> > still on 20m and have nothing to report as recieved here except
> > ZL2TZE-4 at
> > times over the last 3 days. So 20m seems pretty dead to me.
> >
> > Now Jack your frames are address in the TO field as GATE .. This is
> > wrong.
> > You should be addressing per the APRS spec to something like APxxxx
> > acording
> > to your software or TNC which Ive no idea what it might be. Perhaps
> > this is
> > being generated by the SCS TNC .. The path should be Via
> > GATE,WIDE2-1 on HF.
> > With the TO field set like that many software packages will ignore
> > it . If
> > you dont know what to set it to then try APRS in the TO field.
> > Packages like
> > UiView and xastir set these fields themselves by default.
> >
> > David,  Your not quite there either. Your Path should be Via
> > GATE,WIDE2-1
> > not just via WIDE2 .. Thats a general rule on HF
> >
> > Tony VK5AH
> >
> >> fm VK4JRC to GATE via WIDE2-1 ctl UI^ pid F0 - 01.04.09 20:10:36
> >>> dF (Hz): VK4MDX -6, WIDE2 -9
> >> fm VK4JRC to GATE via WIDE2* ctl UI^ pid F0 - 01.04.09 20:10:42
> >>> dF (Hz): VK4MDX -6, WIDE2 -9
> >> fm VK4MDX to APMIXW via WIDE 2 ctl UI^ pid F0 - 01.04.09 20:11:07
> >>  HF IGATE 40 METERS 7036 LSB
> >> fm VK4MDX to APMIXW via WIDE 2 ctl UI^ pid F0 - 01.04.09 20:11:38
> >>  HF IGATE 40 METERS 7036 LSB
> >>
> >> Some of my return freq offset beacons in there, too
> >>
> >
> >
> >
> >
> > _______________________________________________
> > Ozaprs mailing list
> > Ozaprs at aprs.net.au
> > http://aprs.net.au/mailman/listinfo/ozaprs
>
>


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