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ZL3AI > APRDIG 17.09.03 22:36l 254 Lines 9429 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Sep 15, 2/10
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: PCsat -- power needed to be heard
From: "Rochte, Robert" <rrochte@gpacademy.org>
Date: Mon, 15 Sep 2003 10:21:12 -0400
X-Message-Number: 9
I made my first successful uplink to PCsat yesterday using only 6 watts or
so out of an HT connected to a 5/8 wave antenna on the car. Was I
exceedingly lucky to make the connection using so little power, or is this
typical performance for PCsat and other packet satellites?
-R
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Subject: RE: Hurricane Isabel
From: dale huguley <kg5qd@wxsvr.net>
Date: Mon, 15 Sep 2003 14:41:27 +0000
X-Message-Number: 11
Bob D. wrote:
>Why is an object for current hurricanes that have the potential to
>threaten the US (or anywhere) not uplinked by someone such as the NHC or
>HWN?
So what exactly is the complaint? HWN is not active all the time, the
NHC cannot initiate a transmission without a license, Hurricane objects
are sent to 6 aprs servers within 10 seconds of receipt and
retransmitted while they are current.
>I know that there are plenty of places on the net as well as NOAA/NWS
>Radio to find this info so please don't waste your time telling me about
>them. However these online products are not an option if all you have
>with you while mobile is an HT/TNC & GPS or in an area with poor
>reception of NWS Radio, and yes, there are places along the coast (like
>Cumberland county in SNJ) that the NWS acknowledges have poor coverage.
Sorry for the non-aprs rf hurricane info. Apparently I do waste my time.
73 de kg5qd Dale
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Subject: Re: PCsat -- power needed to be heard
From: Bob Bruninga <bruninga@usna.edu>
Date: Mon, 15 Sep 2003 11:57:53 -0400 (EDT)
X-Message-Number: 12
On Mon, 15 Sep 2003, Rochte, Robert wrote:
>I made my first successful uplink to PCsat yesterday using only 6 watts or
>so out of an HT connected to a 5/8 wave antenna on the car. Was I
>exceedingly lucky to make the connection using so little power, or is this
>typical performance for PCsat and other packet satellites?
This is typical and is what PCsat was designed to do. Some have even
gotten in at the 1 Watt level. The problem is QRM. And not just other
HAMS, but all the unlicensed operations in South America, Indonesia and
other countries.. that might be transmitting on that 145.825 freq.
So yes, 1 Watt can work, but only if no one else within the 4 million
square miles around you is transmitting at that instant. (2000 mile
radius)
de WB4APR@amsat.org, Bob
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Subject: Abusive Digi id paths Was: Can someone contact this guy?
From: Dennis Hudson <n2lbt@n2lbt.com>
Date: Mon, 15 Sep 2003 13:20:35 -0400
X-Message-Number: 13
Am I crazy in thinking that digis should be using a direct APRS path
for ID and maybe once an hour with a single wide or at most wide2? What
gives with all these digis sending wild paths at 10 minute intervals.
Why would anyone 500 miles away care about someone's local digi?
A disproportional amount of our local traffic is made up of stations
over 100 miles away, and a shocking amount is over 150 miles. It is one
thing if a new user comes on with an excessive path, but a experienced
operator setting up a digi shouldn't be so abusive.
Dennis, N2LBT
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Subject: RE: Hurricane Isabel
From: "Spider" <spider@rivcom.net>
Date: Mon, 15 Sep 2003 10:26:04 -0700
X-Message-Number: 14
From: "dale huguley" <kg5qd@wxsvr.net>
To: "TAPR APRS Special Interest Group" <aprssig@lists.tapr.org>
Cc: "TAPR APRS Special Interest Group" <aprssig@lists.tapr.org>
Sent: Monday, September 15, 2003 7:41 AM
Subject: [aprssig] RE: Hurricane Isabel
>Sorry for the non-aprs rf hurricane info. Apparently I do waste my time.
>
>73 de kg5qd Dale
No, Dale....You DO NOT waste your time and what you do is very much
appreciated....don't EVER think otherwise.
Jim, WA6OFT
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Subject: RE: Hurricane Isabel
From: "Robert Schiers" <schiers@netins.net>
Date: Mon, 15 Sep 2003 12:44:15 -0500
X-Message-Number: 15
Dale, Ignore the naysayers...you are providing an interesting and
potentially valuable service. Some people feel they have to complain in
order to have something to say. Keep up the good work.
....hasan, N0AN
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Subject: Re: Abusive Digi id paths Was: Can someone contact this guy?
From: Earl Needham <needhame@yucca.net>
Date: Mon, 15 Sep 2003 11:34:38 -0600
X-Message-Number: 16
At 01:20 PM 9/15/2003 -0400, Dennis Hudson wrote:
>Am I crazy in thinking that digis should be using a direct APRS path
>for ID and maybe once an hour with a single wide or at most wide2? What
>gives with all these digis sending wild paths at 10 minute intervals.
>Why would anyone 500 miles away care about someone's local digi?
It depends on what part of the country you are in. In Los Angeles, you
want a relatively short path, in the wide open spaces of New Mexico,
Wyoming, Montana, etc, you probably need a longer path.
Earl
Earl Needham, KD5XB, Clovis, New Mexico DM84jk
KD5XB-2>APW251,PCSAT-1%:=3425.83N/10313.55W-PHG7150/WinAPRS 2.5.1
-EARL_CLOVIS -251-<630>
SETI@Home: 10922WU/7.09yrs!
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Subject: Re: Abusive Digi id paths Was: Can someone contact this guy?
From: "AE5PL Lists" <HamLists@ametx.com>
Date: Mon, 15 Sep 2003 12:58:50 -0500
X-Message-Number: 17
> It depends on what part of the country you are in. In Los
>Angeles, you want a relatively short path, in the wide open
>spaces of New
>Mexico, Wyoming, Montana, etc, you probably need a longer path.
I guess I would ask "Why?" What is achieved by having a digi beacon
with a path over a single WIDE? I am not saying there isn't some
reasoning behind it, I just don't understand what that reasoning might
be. If it is to be seen on APRS-IS, wouldn't a directed path be much
more effective and cause far less QRM?
73,
Pete Loveall AE5PL
pete@ae5pl.net
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Subject: RE: Hurricane label
From: "David Thege" <dthege@conpoint.com>
Date: Mon, 15 Sep 2003 13:03:38 -0500
X-Message-Number: 19
I don't see what he was complaining about. I pulled up a shot of the east
coast and there was the info on Isabel. Dale don't change a thing.
Dave N0XBN
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Subject: Re: Abusive Digi id paths Was: Can someone contact this guy?
From: Dennis Hudson <n2lbt@n2lbt.com>
Date: Mon, 15 Sep 2003 14:12:58 -0400
X-Message-Number: 20
Excellent, could someone explain why a digi id would ever need any
path. If you can't hear or hit the digi directly why would you care
about it. I thought APRS was supposed to be a come as you are mode and
knowledge about the network was necessary. Why would it matter where
you are in the country? It's abusive to the network no matter where you
live. In the old days it was nice to see some activity, but now we
can't support the valid users because rampant digi ids are taking up
all the time slots.
If there is a reason for it I'll think about backing off. Until then
I'm getting frustrated because we can't use our own network I've paid
for an sweated to put up because distant stations are attacking our
network, DOS attacks.
Dennis, N2LBT
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Subject: Re: Abusive Digi id paths Was: Can someone contact this guy?
From: "Scott Miller" <scott@opentrac.org>
Date: Mon, 15 Sep 2003 11:47:18 -0700
X-Message-Number: 21
I have to agree. I can see maybe putting a couple of adjacent digis in the
path if you really need to advertise the digi outside the local area, but
there's no need for more than a single WIDE at most.
I'm logging all RF traffic I see now... I'm going to do some more analysis
on who's taking up all the bandwidth. Just saw a MIC-E packet from a user
in Canada... I don't think anyone here in central CA really cares where he's
at in BC.
Scott
N1VG
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Subject: Re: Abusive Digi id paths Was: Can someone contact this guy?
From: Bob Bruninga <bruninga@usna.edu>
Date: Mon, 15 Sep 2003 14:47:55 -0400 (EDT)
X-Message-Number: 22
On Mon, 15 Sep 2003, AE5PL Lists wrote:
>I guess I would ask "Why?" What is achieved by having a digi beacon
>with a path over a single WIDE? I am not saying there isn't some
>reasoning behind it, I just don't understand what that reasoning might
>be.
The APRSdos DIGIS.TXT file recommends a local (direct) packet every 10
minutes so that local users (or visitors, or whatever scenario develops)
never have to wait long to be updated. Beyond that we figured a single
WIDE hop once every 30 minutes or so, and then maybe a WIDE3-3 once every
few hours just so that 24/7 stations would get an awareness of the network
in adjacent areas.
Anything more than something like that is just QRM.
bob
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