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CX2SA > SATDIG 14.09.08 21:25l 726 Lines 23273 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: Static Discharge Protection - location (Franklin Antonio)
2. ANS-258 AMSAT Weekly Bulletins (Lee McLamb)
3. Double leo satellites (H?kan Harrysson)
4. AO-51 mode L/S (Rob Hardenberg PE1ITR)
5. Re: Double leo satellites (Bob Bruninga )
6. DM31 on AO-27, Monday 15 September
(Patrick STODDARD (WD9EWK/VA7EWK))
7. OK, what am I doing wrong with VO-52 (Mark Lunday, WD4ELG)
8. Mirage KP-2 control box (JW)
9. OLPC - TELNET (Mr Jeffrey L Ross)
10. Re: OLPC - TELNET (Jim Jerzycke)
11. AO-51 mode L/S report 2008-09-14 (Rob Hardenberg PE1ITR)
12. Re: elevation rotor (i8cvs)
----------------------------------------------------------------------
Message: 1
Date: Sat, 13 Sep 2008 19:54:38 -0700
From: Franklin Antonio <antonio(AT)qualcomm.com>
Subject: [amsat-bb] Re: Static Discharge Protection - location
To: Alan <ve4yz(AT)mts.net>
Cc: "amsat-bb(AT)amsat.org" <amsat-bb(AT)amsat.org>
Message-ID:
<598c3a00-88fe-4ffe-8008-85781a9f5bed(AT)nasanexhc02.na.qualcomm.com>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 07:35 PM 9/13/2008, Alan wrote:
>I support there could be a potential between the service panel ground and
>the ground for my mast, but, I've never bothered to check this.
Yep.
The potential difference between these two grounds will arise when
the lightning strike occurs. Lightning provides high current, so
even tho the resistance of the earth may be small, there could be a
substantial voltage drop between the two grounds during the
strike. Perhaps several hundred volts.
That's why grounding for lightning protection should TRY to all go to
one point. At least you can say that one point will be at one
potential. Beyond that you can't say much.
------------------------------
Message: 2
Date: Sun, 14 Sep 2008 01:02:44 -0400
From: Lee McLamb <ku4os(AT)cfl.rr.com>
Subject: [amsat-bb] ANS-258 AMSAT Weekly Bulletins
To: amsat-bb(AT)amsat.org
Message-ID:
<20080914050248.QVI27910.cdptpa-omta03.mail.rr.com(AT)den.cfl.rr.com>
Content-Type: text/plain; charset="iso-8859-1"; format=flowed
AMSAT NEWS SERVICE
ANS-258
**************************************************************
*** 2008 AMSAT Space Symposium and Annual General Meeting ***
*** October 24-26 in Atlanta, Georgia ***
**************************************************************
ANS is a free, weekly, news and information service of AMSAT North America,
The
Radio Amateur Satellite Corporation. ANS reports on the activities of a
worldwide group of Amateur Radio operators who share an active interest in
designing, building, launching and communicating through analog and digital
Amateur Radio satellites.
Please send any amateur satellite news or reports to:
ans-editor(AT)amsat.org
In this edition:
* AMSAT Board of Directors to Conduct Presidential Search
* Worldwide Amateur Radio Effort Saves COMPASS Cubesat
* College Satellite Nite - 18 September 2008
* AO-51 Schedule - September 2008
* ARISS Status - 18 August 2008
SB SAT (AT) AMSAT $ANS-258.01
AMSAT Board of Directors to Conduct Presidential Search
AMSAT News Service Bulletin 258.01
From AMSAT HQ SILVER SPRING, MD.
September 14, 2008
To All RADIO AMATEURS
BID: $ANS-258.01
AMSAT President Rick Hambly, W2GPS notified the AMSAT Board of
Directors on Thursday, September 11 that he is not a candidate for
President of AMSAT for the upcoming year. "After careful consideration, I
have
decided that I am not able to continue as AMSAT President beyond the next
Board
meeting and so I will not offer my name for consideration, and if nominated by
others I will not accept the nomination for
President. While I will be focusing
most of my efforts on business activities, I will do my best to make the
transition seamless", stated Rick in an e-mail to the current members of the
AMSAT Board of Directors. Rick has served as President of AMSAT since October
2004.
The current Board of Directors election concludes on Monday, September
15, when results of the balloting will be announced. Members of the
new Board will then begin a formal search process to recruit and
select a new President. This process is expected to take several
weeks with the goal of having a new President identified prior to the
AMSAT Board of Directors meeting on October 23, prior to the AMSAT
Symposium in Atlanta. The search process starts immediately with an
invitation to current AMSAT members (including BOD members, Senior
Advisors, Officers, and the AMSAT general membership) to suggest
current AMSAT members that they would recommend for consideration.
Recommendations are requested by 1900 EDT Tuesday evening, September
16 to the AMSAT Corporate Secretary (Barry Baines, WD4ASW; e-mail:
wd4asw(AT)amsat.org). Names that are submitted will be initially reviewed by
the
BOD and those candidates that the Board would like to follow up with will be
contacted concerning the interview/selection process.
Rick Hambly, W2GPS will continue to fulfill his duties as President
until the Board meeting in October. His current term on the Board of
Directors expires in September 2009.
[ANS thanks the AMSAT-NA Board of Directors for the above information]
/EX
SB SAT (AT) AMSAT $ANS-258.02
Worldwide Amateur Radio Effort Saves COMPASS Cubesat
AMSAT News Service Bulletin 258.02
From AMSAT HQ SILVER SPRING, MD.
September 14, 2008
To All RADIO AMATEURS
BID: $ANS-258.02
Mike, DK3WN said this week that a worldwide amateur radio effort
saved the COMPASS cubesat. Mike reports receiving reports of
good COMPASS beacons from Japan. The COMPASS cubesat has not reset
over several eclipse periods and remains operational.
The problem that depleted the batteries aboard COMPASS had its
heater remain on constantly. Amateur radio stations around the
world successfully transmitted the command to turn off the heater
and allowed the batteries to recover.
After the heater was turned off Mike wrote, "The only thing we can
do is WAIT. Wait for longer sun periods and voltages over 3.47 Volts.
That's the standard threshold value in emergency mode to switch into
powersafe mode. Only in this mode we can change the threshold values.
As of September 8, COMPASS was back in its powersafe mode of oper-
ation.
As of September 10 COMPASS was back in NORMAL mode. Mike had gained
control of the satellite and could successfully command the satellite.
Mike summarized, "Thanks to all - this is truly a worldwide ham radio
effort - thanks so much for your help. Also, PLEASE do NOT send any
commands to COMPASS until further notice. If you send any commands
you overwrite the current settings and COMPASS may fall back into
emergency mode. We almost lost a cubesat, but we've definitely gained
some new friends. Thank you all for your efforts!"
Meanwhile please listen to the beacon and keep your fingers crossed
that COMPASS will remain in its normal mode.
[ANS thanks Mike, DK3WN, for the above information]
/EX
SB SAT (AT) AMSAT $ANS-258.03
College Satellite Nite - 18 September 2008
AMSAT News Service Bulletin 258.03
From AMSAT HQ SILVER SPRING, MD.
September 14, 2008
To All RADIO AMATEURS
BID: $ANS-258.03
A college Satellite night will be held Thursday, September 18, 2008 (local
time). This event is a great opportunity for hams that are satellite active
to interact with college students and elmer a new generation! Do you know a
college student who would find amateur satellites interesting and
intellectually challenging? Have them as a guest at your station and
introduce them to amateur radio in a way they will never forget.
Look for college stations and students on all the birds that evening and
please give them preference for operation. With the new school year just
starting, new student guests and thus potential young hams will be present
in college shacks around the country. They look forward to meeting you
through the exciting venue of Orbiting Satellites carrying Amateur Radio!
73, Hope to see you on the birds!
Dr. Jay Garlitz, AA4FL
[ANS thanks Jay, AA4FL, for the above information]
/EX
SB SAT (AT) AMSAT $ANS-258.04
AO-51 Schedule - September 2008
AMSAT News Service Bulletin 258.04
From AMSAT HQ SILVER SPRING, MD.
September 14, 2008
To All RADIO AMATEURS
BID: $ANS-258.04
September 8 - September 14
FM Repeater, L/S
Uplink: 1268.700 MHz FM
Downlink: 2401.200 MHz FM
FM Repeater, V/U
Uplink: 145.880 MHz FM
Downlink: 435.150 MHz FM
September 15 - September 21
College Radio Night is September 18!
FM Repeater, V/U
Uplink: 145.920 MHz FM
Downlink: 435.300 MHz FM
9k6 BBS and Telemetry
Uplink: 1268.700 MHz FM
Downlink: 435.150 MHz FM
September 22 - September 24
FM Repeater, V/U
Uplink: 145.920 Mhz FM
Downlink: 435.300 Mhz FM
FM Repeater, L/U
Uplink: 1268.700 Mhz USB
Downlink: 435.150 Mhz FM
September 25 - September 28
FM Repeater, V/U
Uplink: 145.920 Mhz FM
Downlink: 435.300 Mhz FM
FM Repeater, L/U
Uplink: 1268.700 Mhz FM
Downlink: 435.150 Mhz FM
September 29 - October 5
FM Repeater, V/U
Uplink: 145.920 MHz FM
Downlink: 435.300 MHz FM
9k6 BBS and Telemetry
Uplink: 1268.700 MHz FM
Downlink: 435.150 MHz FM
[ANS thanks Drew, KO4MA, for the above information]
/EX
SB SAT (AT) AMSAT $ANS-258.05
ARISS Status - 8 September 2008
AMSAT News Service Bulletin 258.05
From AMSAT HQ SILVER SPRING, MD.
September 14, 2008
To All RADIO AMATEURS
BID: $ANS-258.05
1. Successful Contact with Challenger Learning Center
On Monday, September 1, ten students visiting the Challenger Learning Center
of
Lucas County in Oregon, Ohio participated in an Amateur Radio on the
International Space Station (ARISS) contact. The
students posed ten questions to
Greg Chamitoff, KD5PKZ, in front of an audience of 80. News 24 TV was present
and interviewed the students. The audio was fed into the EchoLink AMSAT server
and IRLP (Internet Radio Linking Project) Reflector 9010.
2. NZZ Article on Swiss Contact
On Saturday, August 30, students attending Schulehaus Feld 1 in Richterswil,
Switzerland participated in a successful Amateur Radio on the International
Space Station (ARISS) contact. Neue Z?rcher Zeitung NZZ posted an article (in
German) on the contact. See:
http://www.nzz.ch/nachrichten/zuerich/telefonkonferenz_mit_der_raumstation_iss
_1
.820665.html
3. ARISS Presentations Posted
On Thursday, August 28, an Amateur Radio on the International Space Station
(ARISS) member gave a talk to Rockwell Collins
Amateur Radio Club in Richardson,
Texas. His talk covered Radio Amateur Satellite Corporation (AMSAT) satellites
and ARISS projects. The presentation has been posted to the AMSAT Web site.
See: http://www.amsat.org/amsat/ariss/Presentations/AMSAT%20for%20RCARC.ppt
The ARISS presentation given at the Challenger
Learning Center (CLC) Lead Flight
Directors Conference on August 27 has also been posted. See:
http://www.amsat.org/amsat/ariss/Presentations/Challenger%20National%
20Convention%202008.ppt
[ANS thanks Carol, KB3LKI, for the above information]
/EX
In addition to regular membership, AMSAT offers membership in the President's
Club. Members of the President's Club, as sustaining donors to AMSAT Project
Funds, will be eligible to receive additional benefits. Application forms are
available from the AMSAT Office.
73,
This week's ANS Editor,
Lee McLamb, KU4OS
ku4os at amsat dot org
------------------------------
Message: 3
Date: Sun, 14 Sep 2008 12:55:24 +0200
From: H?kan Harrysson <sm7wsj(AT)telia.com>
Subject: [amsat-bb] Double leo satellites
To: <amsat-bb(AT)amsat.org>
Message-ID: <000401c91658$657a0b40$a000a8c0(AT)workstation98>
Content-Type: text/plain; charset="iso-8859-1"
Hello,
I was just wondering.
Should it be possible to launch two Leo satellites with transponders who are
connected to eatch other? I am not sure i can explain exactly what i mean, but
if we imagine one of them (satellite A) are heading my direction in a west
pass and retransmitts that on the ordinary way and then also retransmitts what
it hears to the other Leo satellite (Satellite B) who is in sight of satellite
A but just more west then i am located.
I think in that way i could work NA every day?
It feels like with new SDR transponders and the problem to get satellites in
higher orbits this could be a way to go?
This is no HEO/LEO discussion, just some thinking that maybe have gone wrong
HI!
73 de Hakan SM7WSJ
Who is also pulling for P3E
------------------------------
Message: 4
Date: Sun, 14 Sep 2008 14:32:45 +0200 (CEST)
From: "Rob Hardenberg PE1ITR" <rob(AT)itr-datanet.com>
Subject: [amsat-bb] AO-51 mode L/S
To: amsat-bb(AT)amsat.org
Message-ID:
<34209.62.194.134.114.1221395565.squirrel(AT)customer.itr-datanet.com>
Content-Type: text/plain;charset=iso-8859-1
Hi,
Today I mounted my S-band downlink antenna. I will be qrv on AO-51 mode LS
during the 17:17 and
18:57UTC pass over europe. It would be nice to meet some stations on s-band.
73 Rob PE1ITR
http://www.pe1itr.com
------------------------------
Message: 5
Date: Sun, 14 Sep 2008 08:54:55 -0400 (EDT)
From: "Bob Bruninga " <bruninga(AT)usna.edu>
Subject: [amsat-bb] Re: Double leo satellites
To: H?kan Harrysson <sm7wsj(AT)telia.com>, amsat-bb(AT)amsat.org
Message-ID: <20080914085455.AHK11259(AT)mp3.nettest.usna.edu>
Content-Type: text/plain; charset=UTF-8
> Should it be possible to launch two Leo
> satellites...(satellite A) retransmitts
> what it hears to the other Leo satellite
> (Satellite B)... I think in that way i
> could work NA every day?
That is the intent of the APRS constellation of satellites. All operating
packet on 145.825. We want to get as many of these satellties in orbit as we
can to not only provide continuity of coveratge, but also dual-hop
capabilities as you suggest.
APRS can inherently, auomatically, work via dual hops, since it uses a generic
path which does not need to be configured for each satellite callsign.
That is also why the ISS moved to 145.825 a year or so ago, to be on the same
channel, with PCSAT-1,PCSAT2,ANDE, RAFT, and others. There have been several
instances of dual hop packets. The longest one recorded was from Africa over
the Atlantic to Maryland. See:
http://www.ew.usna.edu/~bruninga/pec/pc2ops.html
Unfortunately, only ISS and PCSAT-1 remain in orbit and PCSAT-1 only works
under some conditions, and ISS only works under others. But if you can find
them both working at the same time, then dual hops are possible.
You can watch the downlinks from these two birds and look for activity and
dual hops just by looking through the on-line real-time downlink logs:
www.ariss.net for the ISS
http://pcsat.aprs.org for the others
You can see that ISS has been off the air for 79 days except for a brief
period 2 weeks ago. And PCSAT-1 (W3ADO-1) continues to limp along with some
lucky packets during northern hemisphere mid-day passes.
Ideally, if we can get 6 to 10 small APRS satellites on 145.825, we can
provide near continuous message/email/status capabiliy from anywhere on Earth
at any time. That is why I encourage all Universities making CUBESATS or
other small satellites to include a 145.825 1200 baud packet link so their
satellites can be used in this constellation after their primary mission is
over..
Our next Satellite from the Naval Academy will actually be two-cubesats-at-
once. Both on 145.825 with APRS transponders.
Please, if anyone is working with other universities, see if they would
consider this global constellation mission for their transponder...
Bob, Wb4APR
------------------------------
Message: 6
Date: Sun, 14 Sep 2008 08:03:42 -0700 (PDT)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb(AT)wd9ewk.net>
Subject: [amsat-bb] DM31 on AO-27, Monday 15 September
To: amsat-bb(AT)amsat.org
Message-ID: <683376.3708.qm(AT)web56102.mail.re3.yahoo.com>
Content-Type: text/plain; charset=us-ascii
Hi!
I am planning a quick road trip to a point near the Arizona/Mexico
border tomorrow (Monday, 15 September). I will be in grid DM31
for at least the two AO-27 passes around 2046 and 2227 UTC, subject
to local weather conditions and law enforcement (heavy police and
Border Patrol presence in that area). I might stick around for an
AO-51 pass Monday evening, around 0132 UTC, before making the
3-hour drive back to Phoenix. If there is a safe place to stop
off the highway, I *might* be able to park on the DM31/DM32 grid
boundary. Otherwise, it will be just DM31 for those passes.
Grid DM31 is mostly in Mexico, except for the northeast corner of
the grid that crosses into Arizona. A portion of a military
bombing range, Organ Pipe Cactus National Monument, and the border
town of Lukeville AZ in Pima County are in that corner. I've heard
one station from that grid, on the Mexican side of the border, in
June 2006 via AO-51. Others have told me it has been several years
since other stations have tried the satellites from either side of
the border in DM31.
If we make a contact, I will send you a QSL. No worries!
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 7
Date: Sun, 14 Sep 2008 11:51:08 -0400
From: "Mark Lunday, WD4ELG" <mlunday(AT)nc.rr.com>
Subject: [amsat-bb] OK, what am I doing wrong with VO-52
To: <amsat-bb(AT)amsat.org>
Message-ID: <00b701c91681$b48d2130$1da76390$(AT)rr.com>
Content-Type: text/plain; charset="us-ascii"
Overhead pass, heard W9VNE calling CQ on CW, and QSO between him and a VE3.
Sounded like he was almost in the middle of the downlink passband at 145.900
+/- for Doppler, so I put my transmit signal in the middle of the uplink
passband (remembering that it is inverted, so the middle is a good place to
be). I was transmitting on 435.250, callin several times but no response.
I also heard some USB, but decided to stay with the CW and try to make
contact.
Kinda tough since I am using one FT817 and one Arrow antenna, but I should
be able to get through. I did work through AO-7 last weekend, so I am not
sure what I am doing wrong here. It is my first try on VO-52, but I was
thrilled to at least hear the bird.
Any thoughts/suggestions welcome.
Mark Lunday
WD4ELG
wd4elg(AT)arrl.net
http://wd4elg.net
------------------------------
Message: 8
Date: Sun, 14 Sep 2008 12:03:33 -0400
From: "JW" <ns1z(AT)cfl.rr.com>
Subject: [amsat-bb] Mirage KP-2 control box
To: <amsat-bb(AT)amsat.org>
Message-ID: <568FB7DD35D34073A9290CD22F20157B(AT)JohnPC>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I am looking for the Mirage KP-2 control box, this is black in color and
may have come out of Starkville, MS. I have a blue one that is quite
small and want to replace it with the larger black one so that I have a
matching pair. A direct trade would be great but willing to purchase if
need be.
Thanks.
------------------------------
Message: 9
Date: Sun, 14 Sep 2008 13:22:39 -0400
From: "Mr Jeffrey L Ross" <radiooperator(AT)comcast.net>
Subject: [amsat-bb] OLPC - TELNET
To: "amsat" <amsat-bb(AT)amsat.org>
Message-ID: <7F2F1B6F43244DC1BEBEABCE4DAE6476(AT)hamshackcomputer>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi folks, thought I would let you know I got my OLPC to run telnet and its
working great. Now I can work ham radio with it using the hamgates. If you
want to know how I did it contact me off list.
KC8GKF
p.s. Now if they would only make hyperterm for it we could hook up our
tncs/rigs.
------------------------------
Message: 10
Date: Sun, 14 Sep 2008 10:46:11 -0700 (PDT)
From: Jim Jerzycke <kq6ea(AT)pacbell.net>
Subject: [amsat-bb] Re: OLPC - TELNET
To: amsat <amsat-bb(AT)amsat.org>, Mr Jeffrey L Ross
<radiooperator(AT)comcast.net>
Message-ID: <785673.87049.qm(AT)web80603.mail.mud.yahoo.com>
Content-Type: text/plain; charset=us-ascii
Hyperterminal is a Windoze program. For a Linux "equivalent", look into
minicom, or google for "linux hypertermianl" for more info than you possibly
need.
Jim KQ6EA
--- On Sun, 9/14/08, Mr Jeffrey L Ross <radiooperator(AT)comcast.net> wrote:
> From: Mr Jeffrey L Ross <radiooperator(AT)comcast.net>
> Subject: [amsat-bb] OLPC - TELNET
> To: "amsat" <amsat-bb(AT)amsat.org>
> Date: Sunday, September 14, 2008, 10:22 AM
> Hi folks, thought I would let you know I got my OLPC to run
> telnet and its
> working great. Now I can work ham radio with it using the
> hamgates. If you
> want to know how I did it contact me off list.
>
>
> KC8GKF
>
> p.s. Now if they would only make hyperterm for it we could
> hook up our
> tncs/rigs.
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those
> of the author.
> Not an AMSAT-NA member? Join now to support the amateur
> satellite program!
> Subscription settings:
> http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 11
Date: Sun, 14 Sep 2008 20:02:26 +0200 (CEST)
From: "Rob Hardenberg PE1ITR" <rob(AT)itr-datanet.com>
Subject: [amsat-bb] AO-51 mode L/S report 2008-09-14
To: amsat-bb(AT)amsat.org
Message-ID:
<36664.62.194.134.114.1221415346.squirrel(AT)customer.itr-datanet.com>
Content-Type: text/plain;charset=iso-8859-1
Hi all,
Today I mounted a 67el 2.4GHz yagi antenna on S-band, installed my AO_40
equipment and used AO-51
mode L/S for the first time.
It was great! I could make 3 qso's with EA3FXK, EA3EMG and OZ1MY. Also heard
PA3GUO who has only a
uplink tx.
I noticed a lot of qsb between 51 and 59 independent on the uplink and/or
downlink. So sometimes a
strong downlink but no signal on the repeater. I could use the repeater to 4
degrees elevation on
AOS and LOS.
Also used no automatic doppler tuning. On the downlink tuned to the signal and
switched on the AFC
of the trx. The uplink was tuned by hand.
equipment:
L-band uplink: IC910 10w 26el yagi
S-band downlink: IC910 + db6nt ao-40 converter + 67el yagi.
I hope to see you on mode AO-51 L/S
73 Rob PE1ITR
http://www.pe1itr.com
------------------------------
Message: 12
Date: Sun, 14 Sep 2008 20:57:10 +0200
From: "i8cvs" <domenico.i8cvs(AT)tin.it>
Subject: [amsat-bb] Re: elevation rotor
To: "Gerry" <ve4gtb(AT)mts.net>, "AMSAT-BB" <amsat-bb(AT)amsat.org>
Message-ID: <003401c9169b$b17756e0$0201a8c0(AT)tin.it>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Gerry" <ve4gtb(AT)mts.net>
To: <amsat-bb(AT)amsat.org>
Sent: Saturday, September 13, 2008 11:48 PM
Subject: [amsat-bb] elevation rotor
> My Kenpro KR-500 elevation rotor has quit working. Has anyone the voltage
> outputs on the wiring terminals to the rotor. Like to check the controller
> before taking the rotor down.
>
> 73
>
> Gerry VE4GTB / KD7MDB
>
Hi Gerry, VE4GTB / KD7MDB
In a separate message I have sent to you the schematic diagram of the KR-500
so that you will be able to check the controller with easy.
73" de
i8CVS Domenico
------------------------------
_______________________________________________
Sent via amsat-bb(AT)amsat.org. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 3, Issue 462
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