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ZL3AI > APRDIG 27.02.04 15:32l 331 Lines 10460 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Feb 24, 5/6
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: FW: APRS Client Survey
From: Steve Dimse <k4hg@tapr.org>
Date: Tue, 24 Feb 2004 23:15:43 -0500
X-Message-Number: 36
On 2/24/04 at 10:35 PM Christensen, Eric <CHRISTENSENE@MAIL.ECU.EDU> sent:
>You are exactly right, Steve. Unfortunately I don't have the time or money
>to go out and do such a large and investigative research project like
>that... Hmmm... Maybe if I can get a random sample of the APRS users on
>findU (but can you say that 100% of the users are on findU???) I could make
>a QSL-style card and send it out for folks to return...
I don't know about business school, but when we teach stats to medical
students, we spend very little time on the mathametics. Nowadays just about
anyone can get and use a stats program. That is the easy part...
The hard thing is experiment design, learning what are the right methods to
gather and analyze data, and more importantly (from a medical student
perspective) to be able to look at the statistical methods of others with a
critical eye. No stats are better than bad stats...
Last I heard there were a couple thousand subscribers to the SIG, Stan can
give a current number, but the number responding will be a small fraction
of the total. Furthermore, if you have been on the sig for a while, you
know the sort of religious war client preference tends to engender here.
Some people will likely vote more than once. Even without making up fake
email addresses, I could cast a hundred votes...and of course running my
own server I could create as many accounts as I want, and the method given
doesn't even have an email verification system, so anyone can make up email
addresses. As a result, you can't even rely upon a simple
response/subscriber ratio to figure out what your response rate is.
Furthermore, by sending it to a UI-View list, you added a huge bias in
favor of that program.
Jim posted a good whole-population sample for you to work with.
Categorizing this into the different client programs will give you a nice
set of numbers to work with, probably for less time than the survey method
would, and certainly have less bias in the result.
Of course, this only looks at transmission, there is no way to work in the
7.2 million hits findU got in January into this list, but the important
thing is to state what the results actually measured:
The percentage of APRS client prorgams with at least one during the last n
days on the APRS Internet System is...
and not
The percentage of use of APRS client programs is...
Steve K4HG
----------------------------------------------------------------------
Subject: Re: FW: APRS Client Survey
From: "Christensen, Eric" <CHRISTENSENE@MAIL.ECU.EDU>
Date: Tue, 24 Feb 2004 23:30:44 -0500
X-Message-Number: 37
Steve,
My reasoning for sending the letter to the UI-View Listserv (and other
lists) was to get the message out to as many APRS Users as possible. There
are a lot of people on the UI-View list that use other programs as well. I
have heard many members on that list talk about Xastir, WinAPRS, etc. I
also encouraged others to forward that message on to other lists as to
propagate the request as far as I can. I am not being selective... I am
trying to give as many APRS users (that have e-mail) a voice.
You are also correct about the email addresses being faked. But I would
HOPE that no one would do that.
Even if you use a "random" sample of users, it still could be skewed. The
ONLY way to get the proper data would be to do a census of ALL the APRS
users... But I don't have the manpower to go door-to-door. Now, with that
data from APRSWORLD... If someone can provide me with the key to what all of
those destinations come from, I'll be happy to compile that data as well.
It would be very interesting to see how that data would compare with the
survey I am doing. But, that data would only see stations that actually
make it into the internet. I'm sure there are more than a few users that
cannot access an I-Gate that are on this listserv (I am one of them).
Eric KF4OTN
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Subject: Re: FW: APRS Client Survey
From: Earl Needham <needhame1@yucca.net>
Date: Tue, 24 Feb 2004 21:29:33 -0700
X-Message-Number: 38
At 08:19 PM 2/24/2004, Steve Dimse wrote:
>http://www.findu.com/1000packets.txt
>
>If anyone develops a program that can analyze these for destination call, I'll
>be glad to post packets for the 10 days findU keeps the unique position list,
>current numbering over 32000 stations. APRSworld might be even better for
>this,
>as last I heard Jim parsed out the to-calls, findU does not.
I'm not sure if this is what Steve meant or not, but using the
above link, I get the following result:
5Q2UR7 1
AP0922 1
APC102 1
APD213 1
APD223 1
APD225 1
APDRE 1
APDW 1
APE001 1
APE011 1
APFD74 1
APFLX 1
APK001 1
APM344 1
APM361 1
APM372 1
APND0R 1
APR817 1
APR832 1
APR845 1
APR848 1
APRDA1 1
APRLX 1
APRQRL 1
APRS37 1
APRS58 1
APRS65 1
APRS66 1
APRS82 1
APRS86 1
APRSD 1
APRSM 1
APRSOE 1
APRWX 1
APS201 1
APU16K 1
APU24 1
APU24A 1
APU24S 1
APU24V 1
APU25D 1
APW228 1
APW243 1
APW250 1
APW271 1
APW274 1
APWUI 1
APX110 1
APX113 1
APX120 1
APX121 1
APZ023 1
APZ16 1
APZ183 1
APZ187 1
APZ188 1
APZ18A 1
APZ81 1
APZMYK 1
EC4S8U 1
GPSLM 1
GPSPP 1
GREENO 1
N9IJ-10 1
R9SS2T 1
RELAY 1
S1RX6U 1
S2TY9X 1
S6UR3T 1
S7QRPT 1
S8PS4R 1
S9QQTY 1
SP1S7R 1
SR5Y4U 1
SS5V0Y 1
ST0S1X 1
STUR2X 1
SV5V7T 1
SVQT9Y 1
SX1R3Z 1
SXQWTQ 1
SYPT0W 1
SYSW46 1
T2PS2R 1
T3SX8R 1
T4PQ9X 1
T6UU1W 1
T7RQX3 1
T8RUVQ 1
T9QQUS 1
TR0Q9U 1
TS0W5R 1
TS5Q99 1
TU4QXY 1
TV0R6W 1
TV4RYV 1
TVRRX3 1
TX4XY8 1
TXTWW1 1
TY5TS1 1
U1RWUP 1
UIDIGI 1
US0PW3 1
WX0GLD-10 1
WXGMP 1
WXIPQ 1
WXOBK 1
WXPCP 1
APK101 2
APM352 2
APRSMD 2
APRSW 2
APRX63 2
APSAAR 2
APT202 2
APU24P 2
APU256 2
APUWX 2
APW248 2
APW249 2
APWXTV 2
APX130 2
APX131 2
APZ022 2
APZ182 2
APZ185 2
VOZELJ 2
WIDE 2
APR846 3
APRSWX 3
APS212 3
APU16M 3
APU16N 3
APU24L 3
APU254 3
APU25E 3
APZ115 3
CQ 3
GPS 3
GPSLV 3
APND0V 4
APW247 4
GPSLK 4
GPSMV 4
APN383 5
APS215 5
ID 5
APN382 6
APND0W 6
APRX46 6
APW246 6
WX 6
APEWX 7
APND0U 7
APNU18 7
APS222 8
APND0X 10
APZ17 10
APD215 12
APNU19 12
APS221 12
APD214 13
APZ18 14
APW261 15
APW272 15
APU25H 23
APW251 36
APZ186 39
BEACON 55
APU25J 70
APRS 390
E.
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: 11385WU/7.39yrs
----------------------------------------------------------------------
Subject: ARISS Notice: Ham Equipment Turned Off Thursday
From: "Christensen, Eric" <CHRISTENSENE@MAIL.ECU.EDU>
Date: Tue, 24 Feb 2004 23:40:00 -0500
X-Message-Number: 39
-----Original Message-----
From: Scott H. Lindsey-Stevens [mailto:n3asa@AMSAT.Org]
Sent: Tuesday, February 24, 2004 23:12
To: Sarex
Subject: [sarex] ARISS Notice: Ham Equipment Turned Off Thursday
For safety reasons, the amateur radio equipment aboard the International
Space Station will be shut down during Thursday's spacewalk (EVA). The
spacewalk is scheduled to begin at 3pm CST or 2100 UTC. The equipment will
be shut off prior to the EVA and turned on sometime after the EVA is
completed. Please be aware that this is the first time the entire space
station crew will be working outside the station. The crew will be
undoubtedly be very tired once they finish up and return inside.
Further information on the spacewalk can be found at
http://spaceflight.nasa.gov/station/.
ARISS is an international educational outreach program with US participation
from NASA, AMSAT (The Amateur Satellite Radio Corp.), and the American Radio
Relay League. ARISS offers an opportunity for students to experience the
excitement of Amateur Radio by talking directly with crewmembers on-board
the International Space Station. Teachers, parents and communities
experience, first hand, how Amateur Radio and crew members on ISS can
energize youngsters interest in science, technology, and learning. Further
information on the ARISS programme is available on the website
http://www.rac.ca/ariss
Thank you & 73,
Scott Lindsey-Stevens / N3ASA
ARISS Team Member
----
Via the sarex mailing list at AMSAT.ORG courtesy of AMSAT-NA. To
unsubscribe, send "unsubscribe sarex" to Majordomo@amsat.org
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