[OZAPRS] Findu and Email Unreliable ?

[Richard Hoskin]

Hi Tony,

I've not recently experienced any major problems with findu although I did
notice this problem a few years ago.

All relevant data for stations I have been monitoring over the past few
months has been as I would have expected. The Site Alert data from findu
does not have any holes in it that can not be explained and a number of
VK3 stations that I checked on and compared with RF data are correct.

Remember that findu has a filter that will filter out what it thinks is
bad or duplicated packets.

If you look at the following:

http://www.findu.com/cgi-bin/raw.cgi?call=vk3byd-15&time=1
http://www.findu.com/cgi-bin/tele1.cgi?call=vk3cv-1&last=96&param=1&b=0.5&
label=Current Temperature&units=Celceus&autorange=1

You will see that the data is consistant.

I would suspect it may be your local IGate that is causing findu to think
that the packets it is receiving are corrupted. As a test you could set up
UI-View as an IGate and see if there is any difference in the data Findu
reports. What version of aprsd is the IGate running?

It would be an inefficient use of limited Australian APRS resources to
provide an Australian findu unless it added additional functionality that
the International on does not have. 

You might like to email Steve Dimse if the problem persists as he may have
experienced similar problems in the passed.

Cheers
Richard
VK3JFK

----- Original Message -----
From: Tony Hunt <wavetel at iname.com>
Date: Thursday, March 11, 2004 7:44 pm
Subject: [OZAPRS] Findu and Email Unreliable ?

> I wonder if somebody can explain for me these things ?? Maybee Richard
> Hamish or Geoff ..
> 
> Ive noticed that Findu in particular is very intermittent .. It 
> will not
> seem to record posits sometimes for hours even though they are 
> hitting the
> internet feeds here in VK .. Also Email rarely works.. This seems 
> to persist
> for days and then comes good for a while mysteriously..
> 
> Let me explain.. Ive noticed this using ISS quite often .. In that 
> a posit
> downlinks and hits the Igate and makes it onto the national map 
> fine.. I
> have had a PC running Ui-View logged onto the VKaprs server 
> running no RF
> gear and seen the posits appear fine on the map.. This is proof that
> somethings amiss.. These posits dont get to Findu..
> 
> 
> The web page for the stations heard via ISS reveals this flaw as 
> well since
> they have started putting maps up there http://www.ariss.net/ .. 
> Every few
> days we seem to get a blast of stations appearing on the world map 
> in VK5
> VK3 VK2 and then it seems to go blank for days.. I am running a 
> 24/7 Satgate
> here and frequently put posits through it and onto the net..
> 
> I know VK3JTM runs a Satgate also and I see he gates ISS frames at 
> timeswhen it does work..
> 
> Our Igate is currently connected to second.aprs.net.au ..
> 
> Ive also found it rare that EMAIL works via APRS messaging and 
> even rarer
> that one gets a ACK back as well..
> 
> On comming home after driving VK5AH-9 I find checking imediatlely 
> that no
> posits have been heard for 3-4 hours at times from VK5AH-9 on 
> FINDU and yet
> the Igate is running here in Adelaide and we are seeing Igate 
> traffic ok on
> air..
> 
> So there appears to be a blockage in the pipe from VK to the US 
> which is an
> issue ve raised before.. Thats just a speculation from myself but 
> I would
> like sombody to give us another theory..
> 
> Just because a APRS frame makes it to the national server doesnt 
> mean that
> it got to the rest of the world..
> This is a real pain with Sat downlinks in particular as one can 
> only get
> about 1-2 posits a day through a Satgate .. It seems obserd that 
> the weak
> link in the system is in fact the internet feeds and not the RF 
> side which
> involves Sat uplinks and downlinks..
> 
> Do we need a FINDU and EMAIL server based in  VK ?? It may be a 
> big ask but
> I thought I would ask the question.. I suspect it will solve the 
> problemsIve outlined above ..
> 
> Any comments ?? I will ignore all flames ..
> 
> Tony Hunt   VK5AH
> 
> 
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> 
                                                                      

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