[OZAPRS] VK2RHR-1 raw

[vk2tv]

Thanks Matthew.

Ray vk2tv


On 15/11/17 14:02, Matthew Cook wrote:
> Hi Gordo,
>
> The "new method" is simply how digipeaters insert their call signs 
> into the proto path and do the respective termination.  You'll find 
> two implementations of this in use, as per my original email to Glen.  
>  Both are valid and in use within APRS networks across the world.  The 
> following URL goes into a little more information.
>
> http://info.aprs.net/index.php?title=Digipeater
>
> Unfortunately all digipeaters are not equal, some better than others.  
> You need a lot of RAM in a digipeater to be able to have enough cache 
> to make intelligent decisions, which rules out many Z80 based TNC's.
>
> 73
>
> Matthew
> VK5ZM
>
> On 15 November 2017 at 12:00, Gordon Taylor <gordon at thetaylorclub.com 
> <mailto:gordon at thetaylorclub.com>> wrote:
>
>     Watching this with interest as it helps get a better understanding
>     of the traffic flows.
>     However I note there is a 'new' method.  I was under the
>     impression that the WIDEn-N was the new method.  Is this newer
>     method something we are going to adopt, I imagine to change the
>     UI-Digi code would require the source code owner to update.
>
>     What would be nice in a simplistic sense is when a packet gets
>     digipeated by a local digi, bounces down to another and comes
>     back, the local digi had the intelligence to know that it is the
>     same packet of information just with some extra path info so it
>     doesn’t repeat it again.
>
>
>     Regards
>
>     Gordo VK4VP
>
>     -----Original Message-----
>     From: OZAPRS [mailto:ozaprs-bounces at aprs.net.au
>     <mailto:ozaprs-bounces at aprs.net.au>] On Behalf Of Glen English VK1XX
>     Sent: Wednesday, 15 November 2017 10:06
>     To: ozaprs at aprs.net.au <mailto:ozaprs at aprs.net.au>
>     Subject: Re: [OZAPRS] VK2RHR-1 raw
>
>     Hi Matthew
>
>     thanks for the write up.
>
>     Hmm so the 'new' method and code, in this case direwolf,  really
>     needs to be smarter about the way it handles the old (but still
>     valid ) RHR method. It's really a defficiency in handling the
>     legacy stuff at RGI
>
>     Something for me to write into the source code.
>
>     On a separate argument, I consider  RHR-1 a WIDE digi, and
>     stations digipeating through it with W2-1 should be sent and
>     terminated at RHR (IE will be the last digi) .
>
>     I've added RHR to the blacklist for UI digi  for the moment so we
>     don't digi a whole load of sydney APRS traffic over the entire
>     Riverina ....
>     and it is also '2nd adjacent WIDE'. no benefit for users  for RGI
>     to digi its traffic.
>
>     -glen
>     On 15/11/2017 10:51 AM, Matthew Cook wrote:
>     > I'd be suggesting that VK2RHR-1 is an older APRS implementation
>     > (possibly a TNC-2 clone with UI-DIGI or Kantronics TNC) than VK1RGI.
>     >  If you watch the asterisk that is telling you what's happening.
>     >
>     > The old WIDEn-N technique was to decrement N and insert the digi
>     > callsign, when -0 was achieved to append WIDEn* to show it has been
>     > terminated.  The new WIDEn-N technique is to drop the WIDEn* on the
>     > end and simply use the Callsign of the digi terminated with an
>     asterisk.
>     >
>     > So in your example VK2RHR-1 has used the old digipeter method and
>     > VK1RGI-1 has used the new, , *_both are still valid_ !!!*
>     >
>     > There were flame wars on the APRS TAPR mailing list over this issue
>     > for many years, the argument was the WIDEn* on the end was redundant
>     > and the newer method was more efficient.... however legacy equipment
>     > meant it was difficult (read people reluctant) to change, that horse
>     > had bolted.
>     >
>     > 73
>     >
>     > Matthew
>     > VK5ZM
>     >
>     >
>     > On 15 November 2017 at 08:36, Glen English VK1XX
>     > <glenlist at pacificmedia.com.au
>     <mailto:glenlist at pacificmedia.com.au>
>     <mailto:glenlist at pacificmedia.com.au
>     <mailto:glenlist at pacificmedia.com.au>>>
>     > wrote:
>     >
>     >     here is what it looks like going into 1RGI :
>     >
>     >     Now I thought that RHR should have REPLACED WIDE1 with its
>     >     callsign ????
>     >     ------
>     >
>     >     Digipeater WIDE1 (probably VK2RHR-1) audio level =
>     69(34/18)   [NONE]
>     >     __|||||||
>     >
>     >     [0.5] VK2XRX-9>S3T8P9,VK2RHR-1,WIDE1*,WIDE2-1:`O&ilSpk/'"54}|3
>     >     MIC-E, truck, Byonics TinyTrack3, In Service
>     >
>     >
>     >     ginini generates :
>     >
>     >     [0H] VK2XRX-9>S3T8P9,VK2RHR-1,WIDE1,VK1RGI-1*:`O&ilSpk/'"54}|3
>     >
>     >
>
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