[aprssig] vx-8 mic-e type code & ui-view32

[Julian, G4ILO]

Hessu.

Whether or not Yaesu updates the software for the VX-8, unlike the
Kenwoods these radios are not firmware upgradeable so this is is not
going to make the problem go away with all the radios are out there
already.

Surely the only solution is to discourage the use of broken IGate
software that cannot be fixed?

Julian, G4ILO
G4ILO's Shack: www.g4ilo.com








On 5 April 2011 06:41, Heikki Hannikainen <hessu at hes.iki.fi> wrote:
>
> Hi,
>
> It's quite likely that this has been discussed before, but I'm not sure.
>
> UI-View32 strips spaces from the end of a packet before passing it to the
> APRS-IS. VX-8 sends mic-e packets with a space in the end, thanks to the
> mic-e type code allocation of "`......_b" (b = SPACE). When the packet is
> heard by an UI-View32 and another igate which isn't broken, APRS-IS gets two
> different packets, and doesn't filter the duplicate. For example, see this:
> http://aprs.fi/?c=raw&call=KB3TBX-7&limit=50&view=hex
>
> There are often two packets, just 1 second apart, the only difference being
> the trailing space in the other packet.
>
> Bob: Would it be possible to allocate a new type code for the VX-8 and
> request Yaesu to use it in the following software upgrades, if there are
> any?
>
> Would it be possible to add a note in
> http://www.aprs.org/aprs12/mic-e-types.txt that there should be no more new
> type code allocations made with a space in the end, as it causes a lot of
> duplicate rubbish packets on the APRS-IS?
>
> Also, it should be noted in the document that the "`....._ " is actually
> received on the APRS-IS as "`...._" if an UI-View32 is involved, which needs
> to be handled when parsing.
>
>  - Hessu
>
>
> ---------- Forwarded message ----------
> From: Heikki Hannikainen <hessu at hes.iki.fi>
> To: aprs.fi <aprsfi at googlegroups.com>
> Date: Tue, 5 Apr 2011 08:22:14 +0300 (EEST)
> Subject: Re: [aprsfi] dupes?
>
> On Mon, 4 Apr 2011, Jim Alles wrote:
>
>> For some reason, just now stumbled on this group and joined.
>>
>> I am running WIDE2-1, W3YA-1 as my UNPROTO PATH.
>
> This is probably not causing the duplicates, but - is there some specific
> reason why you're naming W3YA-1 in the path? Things would probably work
> better and more dynamically if you used a simple WIDE2-2 as the path.
>
>> Please see the raw packets for KB3TBX-7 to see regular packet
>> duplication.
>>
>> W3YA-1 is the local high elevation digi, and KB3TBX & K3CWP-1 are two
>> igates in the valley.
>
> Please switch to the 'hex' mode in the packet display, and you'll notice
> that some of the packets show a space character in the end of the packet:
>
> 0x40 } g r e e t i n g s   o n   1 4 6 . 8 5   _
>     7d6772656574696e6773206f6e203134362e3835205f20
>
> and the duplicate version of the same packet doesn't have the space (0x20):
>
> 0x40 g r e e t i n g s   o n   1 4 6 . 8 5   _
>     6772656574696e6773206f6e203134362e3835205f
>
> The above won't be so readable with a proportional font, it's better in the
> packets display: http://aprs.fi/?c=raw&call=KB3TBX-7&limit=50&view=hex
>
> I believe that your packets are simply received by two igates. Your vx-8's
> mic-e type code (device identification code which allows aprs.fi to figure
> out it's a vx-8, see http://www.aprs.org/aprs12/mic-e-types.txt) is "` ....
> _ " - a ` in the beginning of the comment and "_ " in the end.
>
> Now, one of your igates WA3UFN-1 running UI-View32, has a bug - it removes
> space characters from the end of the packet before passing it to the
> APRS-IS. The packet is modified, so the APRS-IS doesn't filter the duplicate
> any more, since it looks like new and different packet. This is a known bug
> of UI-View32.
>
> WA3UFN-1 could possibly switch to some other igate software (such as Lynn's
> APRSIS32) which doesn't have the bug and gets other fixes done too. Or maybe
> Bob Bruninga could assign a different type code to the vx-8 which doesn't
> have a space in the end to avoid the UI-View bug and Yaesu could provide a
> firmware upgrade for the rig.
>
>  - Hessu
>
>
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