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ZL3AI > APRDIG 04.05.03 19:42l 205 Lines 7226 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Apr 28, 3/3
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: Filtering of Internet feed?
From: "Curt Mills, WE7U" <hacker@tc.fluke.com>
Date: Mon, 28 Apr 2003 13:59:36 -0700 (PDT)
X-Message-Number: 14
On Mon, 28 Apr 2003 radio_q@juno.com wrote:
>Although APRS+, and perhaps others, have easy range filters to apply to
>the
>received data as well as a way to only allow your selected stations to be
>received via the internet connection, I don't think there is any way to
>reduce the bandwidth required on the incoming link, in your case the
>cable
>modem connection. The data has to be processed and then each report
>calculated to determine its range from YOUR location which you
>manually input. The server doesn't know where you are and thus
>all data is forwarded to any connection. Your processor will do any
>filtering etc to determine which to keep and which to discard. That
>is not something done on the server.
Except for the case of the filtered servers, which will do just what
he is asking. I don't have much specific data on them although I
use one of them a bit for testing. Check around for docs on the
filtered servers. They have a mode where you can select all
stations/objects within a radius of a location, and then only those
packets will come down the pipe to your client.
Some of the clients have been modified to send up your filtering
parameters to the server each time you make a connection to that
server. Xastir is one such client. There are others. The
alternative is to send a message to the server manually after you
first connect, in order to set these parameters.
--
Curt Mills, WE7U hacker_NO_SPAM_@tc.fluke.com
Senior Methods Engineer/SysAdmin
"Lotto: A tax on people who are bad at math!"
"Windows: Microsoft's tax on computer illiterates!" -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
----------------------------------------------------------------------
Subject: Filtering of Internet feed?
From: "Jacob Tennant" <k8jwt@ntelos.net>
Date: Mon, 28 Apr 2003 17:54:47 -0400
X-Message-Number: 15
Let me rephrase this question.
If I set the station to display direct contacts only, will this eliminate
a lot of the internet feed stations and on show the RF heard stations?
Hate for some under-trained APRS op to see 4000 stations on the screen when
he only needs to be concerned with the locals.
If I do this it will still pass the RF to the internet? as well as the
internet messages & wx data?
Jacob Tennant K8JWT
----------------------------------------------------------------------
Subject: Re: Filtering of Internet feed?
From: radio_q@juno.com
Date: Mon, 28 Apr 2003 15:40:36 -0600
X-Message-Number: 16
On Mon, 28 Apr 2003 15:59:06 -0500 "Gregg G. Wonderly"
<gregg@skymaster.cytetech.com> writes:
>
>>Although APRS+, and perhaps others, have easy range filters to
>>apply to the.....................
>
>I think it was stated that the java Aprsd implementation has this
>facility..................
Yes, that note came out after I sent in my reply and that sure would
solve the original problem postulated. It does the 'filtering' before
the data is sent out and that is the desired result.
I saved the note on how to do that and may try it when I get a few
spare moments ( Dreamer that I am..)
Jim
----------------------------------------------------------------------
Subject: Re: Filtering of Internet feed?
From: "Curt Mills, WE7U" <hacker@tc.fluke.com>
Date: Mon, 28 Apr 2003 15:33:26 -0700 (PDT)
X-Message-Number: 17
On Mon, 28 Apr 2003, Jacob Tennant wrote:
>Let me rephrase this question.
>
>If I set the station to display direct contacts only, will this eliminate
>a lot of the internet feed stations and on show the RF heard stations?
For Xastir, the answer is yes. Can't answer for the other clients.
>Hate for some under-trained APRS op to see 4000 stations on the screen when
>he only needs to be concerned with the locals.
>
>If I do this it will still pass the RF to the internet? as well as the
>internet messages & wx data?
Again, for Xastir, yes. The display settings only affect what is
displayed. The rest of the system goes on normally with all packets
flying back and forth properly.
--
Curt Mills, WE7U hacker_NO_SPAM_@tc.fluke.com
Senior Methods Engineer/SysAdmin
"Lotto: A tax on people who are bad at math!"
"Windows: Microsoft's tax on computer illiterates!" -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
----------------------------------------------------------------------
Subject: Re: Filtering of Internet feed?
From: "Wes Johnston" <wes@johnston.net>
Date: Mon, 28 Apr 2003 18:37:42 -0400
X-Message-Number: 18
While we're on topic.... what is the typical port number of a messages only
port?
Wes
----------------------------------------------------------------------
Subject: Re: Filtering of Internet feed?
From: radio_q@juno.com
Date: Mon, 28 Apr 2003 17:42:37 -0600
X-Message-Number: 19
On Mon, 28 Apr 2003 15:33:26 -0700 (PDT) "Curt Mills, WE7U"
<hacker@tc.fluke.com> writes:
>On Mon, 28 Apr 2003, Jacob Tennant wrote:
>
>>Let me rephrase this question.
>>
>>If I set the station to display direct contacts only, will this
>eliminate a lot of the internet feed stations and on show the RF heard
>stations?
>
>For Xastir, the answer is yes. Can't answer for the other clients.
If you are set for RF only stations, wouldn't that eliminate all
stations heard via the Internet feed? If that's what you are
trying to do, you don't even need the Internet connection.
Jim
----------------------------------------------------------------------
Subject: Re: Filtering of Internet feed?
From: "Curt Mills, WE7U" <hacker@tc.fluke.com>
Date: Mon, 28 Apr 2003 16:59:00 -0700 (PDT)
X-Message-Number: 20
On Mon, 28 Apr 2003 radio_q@juno.com wrote:
>If you are set for RF only stations, wouldn't that eliminate all
>stations heard via the Internet feed? If that's what you are
>trying to do, you don't even need the Internet connection.
There are other reasons for connecting to the internet other than
displaying stations that are elsewhere: Getting weather alerts and
severe storm objects, messaging out of your area, etc.
--
Curt Mills, WE7U hacker_NO_SPAM_@tc.fluke.com
Senior Methods Engineer/SysAdmin
"Lotto: A tax on people who are bad at math!"
"Windows: Microsoft's tax on computer illiterates!" -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
----------------------------------------------------------------------
Subject: Santa Maria IGATE back online
From: Miller Scott Contr 30SCS/FTI <Scott.Miller@vandenberg.af.mil>
Date: Tue, 29 Apr 2003 02:27:03 -0000
X-Message-Number: 21
The server running the N1VG IGATE (and opentrac.org) went down on Sunday
with a failed hard drive. Fortunately, all of the websites had already been
moved to the new server that went online the day before.
And a word of warning to anyone running Samba on a box with AX.25 - make
sure you lock it down to just the Ethernet interfaces, otherwise it'll do
name announcements on the AX.25 interfaces, too.
Oops.
Scott
N1VG
---
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