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CX2SA > SATDIG 06.04.08 20:00l 795 Lines 28217 Bytes #999 (0) @ WW
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Read: GUEST
Subj: AMSAT-BB-digest V3 172
Path: IZ3LSV<IW2OHX<IQ0LT<IK2XDE<DB0RES<DK0WUE<7M3TJZ<HG8LXL<CX2SA
Sent: 080406/1635Z @:CX2SA.LAV.URY.SA #:58082 [Minas] FBB7.00e $:58082-CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: AMSAT-BB Digest, Vol 3, Issue 171 (John Kopala)
2. Re: SO-50 67 khz? (Kent R. Frazier)
3. AO-51 Mode S Antenna question (Ronald Nutter)
4. Re: AO-51 Mode S Antenna question (George Henry)
5. metal or non metal cross booms (Gopal Madhavan)
6. Re: metal or non metal cross booms (Edward Cole)
7. Re: AO-51 Mode S Antenna question
(Patrick STODDARD (WD9EWK/VA7EWK))
8. recording software (Nick Pugh)
9. Re: recording software (G8IFF/KC8NHF)
10. COSMONAUTICS DAY 12th APRIL SPECIAL CALLSIGN GB0CD ON AIR
(Robert Turlington)
11. Re: recording software (jkelly)
12. [ans] ANS-097 AMSAT Weekly Bulletins (Dee)
13. Re: metal or non metal cross booms (Prathap Kumar)
14. G-5500 lubrication (Joel Kandel)
15. Re: recording software (Jeff Mock)
----------------------------------------------------------------------
Message: 1
Date: Sat, 5 Apr 2008 13:20:22 -0700
From: "John Kopala" <jkopala(AT)gmail.com>
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 3, Issue 171
To: <amsat-bb(AT)amsat.org>, <w0dxz(AT)aol.com>
Message-ID: <01a901c8975a$7a610a90$6701a8c0(AT)sierrap4dual>
Content-Type: text/plain; charset="iso-8859-1"
Yes, SO-50 requires a 67 Hz PL tone. Note that the satellite receiver is
turned on by a 74 Hz PL tone and stays on for 10 minutes. After turning it
on, if it is not already on, switch back to the 67 Hz tone to talk. Be
aware that if you are talking through the bird and no longer hear the
downlink, the 10 minutes since the last time it was activated may have
expired. If so, just turn it on again.
John - N7JK
Subject: [amsat-bb] SO-50 67 khz?
To: amsat-bb(AT)amsat.org
Message-ID: <8CA655E76661585-1754-1BFA(AT)webmail-nb12.sysops.aol.com>
Content-Type: text/plain; charset="us-ascii"
Does SO-50 still require the? 67khz tone on input?
I am gong to try it for the first time.
Bob W0DXZ? DM33
------------------------------
Message: 2
Date: Sat, 5 Apr 2008 18:44:00 -0500
From: "Kent R. Frazier" <k5knt(AT)amsat.org>
Subject: [amsat-bb] Re: SO-50 67 khz?
To: amsat-bb(AT)amsat.org
Message-ID:
<7caa889a0804051644l4f4341a6ib35ef460303d3dd(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
I don't know if the tone is required, but SO-50 makes up five of my eleven
QSOs so far. I'm working mobile from a Mitsubishi Outlander using an ICOM
IC-2720H with a 19" whip mag-mount antenna.
Kent, K5KNT
On Sat, Apr 5, 2008 at 1:03 PM, <w0dxz(AT)aol.com> wrote:
> Does SO-50 still require the? 67khz tone on input?
> I am gong to try it for the first time.
> Bob W0DXZ? DM33
> _______________________________________________
> 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
--
Kent R. Frazier, K5KNT
------------------------------
Message: 3
Date: Sat, 05 Apr 2008 22:02:09 -0500
From: Ronald Nutter <rnutter(AT)networkref.com>
Subject: [amsat-bb] AO-51 Mode S Antenna question
To: amsat-bb(AT)amsat.org
Message-ID: <47F83D31.5040305(AT)networkref.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have one of the K5GNA modified downconverters with the corner
reflector attached. Since starting to set my satellite station back up,
this is one area that I hadnt addressed. I have my antennas mounted to
a Channel Master rotor on a commercial TV tripod. The antennas are
angled at about 25 degrees because of some ground clutter, trees, etc
that I have to shoot over to get to the satellites.
With this setup, can I mount the Mode S downcoverter and have a
reasonable chance at getting it to work or should I look at some type of
patch antenna to get better signal picket ? Is mode S a little less
unforgiving so that I have to have it more directed at the satellite
than I can get away with on my current VHF/UHF antenna setup ?
Thanks,
Ron
KA4KYI
------------------------------
Message: 4
Date: Sat, 5 Apr 2008 22:44:25 -0500
From: "George Henry" <ka3hsw(AT)earthlink.net>
Subject: [amsat-bb] Re: AO-51 Mode S Antenna question
To: "amsat bb" <amsat-bb(AT)amsat.org>
Message-ID: <002301c89798$829560b0$0400a8c0(AT)parents>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
----- Original Message -----
From: "Ronald Nutter" <rnutter(AT)networkref.com>
To: <amsat-bb(AT)amsat.org>
Sent: Saturday, April 05, 2008 10:02 PM
Subject: [amsat-bb] AO-51 Mode S Antenna question
>I have one of the K5GNA modified downconverters with the corner
> reflector attached. Since starting to set my satellite station back up,
> this is one area that I hadnt addressed. I have my antennas mounted to
> a Channel Master rotor on a commercial TV tripod. The antennas are
> angled at about 25 degrees because of some ground clutter, trees, etc
> that I have to shoot over to get to the satellites.
>
> With this setup, can I mount the Mode S downcoverter and have a
> reasonable chance at getting it to work or should I look at some type of
> patch antenna to get better signal picket ? Is mode S a little less
> unforgiving so that I have to have it more directed at the satellite
> than I can get away with on my current VHF/UHF antenna setup ?
>
> Thanks,
>
> Ron
> KA4KYI
The mode S downlink on AO-51 is pretty easy to receive with a corner
reflector without critical aiming: there's a video somewhere of Drew (I
think...) making contacts with just such a downconverter/corner reflector
combo just laying on its side on the roof of his car... The real trick is
the doppler: 3x as much as on 70 cm! CAT tuning is a must.
73,
George, KA3HSW
------------------------------
Message: 5
Date: Sun, 6 Apr 2008 07:20:56 +0530
From: "Gopal Madhavan" <gopalmadhavan(AT)vsnl.com>
Subject: [amsat-bb] metal or non metal cross booms
To: <amsat-bb(AT)amsat.org>
Message-ID: <021a01c89788$a9093b00$6501a8c0(AT)amd25>
Content-Type: text/plain; charset="us-ascii"
I have experimented with both non-metallic and metallic cross booms after
reading numerous articles on the subject some years ago. With CP antennae
mounted in X configuration there seems to be hardly any difference in
performance. I speak of experiments done when AO-40 was active.
I now use a metallic boom as it gives very good rigidity to mount two CP
antennae, a small dish for 2.4 GHz, preamps etc. Here in India I do not have
the option to order a good section of fibre glass cross boom any way, and so
had made do with PVC tube wrapped in fibre glass, but it eventually sagged
and I had to periodically rotate it 180 degrees to keep it somewhat level.
Gopal VU2GMN
------------------------------
Message: 6
Date: Sat, 05 Apr 2008 22:58:56 -0800
From: Edward Cole <kl7uw(AT)acsalaska.net>
Subject: [amsat-bb] Re: metal or non metal cross booms
To: <amsat-bb(AT)amsat.org>
Message-ID: <200804060658.m366wu46038141(AT)hermes.acsalaska.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Gopal,
A good decision that you made. A study by Kent, WA5VJB, shows that
only some sensitivity of position between elements on the antenna
boom impacts using a metal crossboom if the antenna is mounted in the
"X" confinguration. My satellite antennas are mounted this way.
73 Ed - KL7UW
At 05:50 PM 4/5/2008, Gopal Madhavan wrote:
>I have experimented with both non-metallic and metallic cross booms after
>reading numerous articles on the subject some years ago. With CP antennae
>mounted in X configuration there seems to be hardly any difference in
>performance. I speak of experiments done when AO-40 was active.
>
>I now use a metallic boom as it gives very good rigidity to mount two CP
>antennae, a small dish for 2.4 GHz, preamps etc. Here in India I do not have
>the option to order a good section of fibre glass cross boom any way, and so
>had made do with PVC tube wrapped in fibre glass, but it eventually sagged
>and I had to periodically rotate it 180 degrees to keep it somewhat level.
>
>Gopal VU2GMN
>
>
>_______________________________________________
>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: 7
Date: Sun, 6 Apr 2008 01:09:22 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb(AT)wd9ewk.net>
Subject: [amsat-bb] Re: AO-51 Mode S Antenna question
To: amsat-bb(AT)amsat.org
Message-ID:
<2e18ad3e0804060109x7530e9e2xdf28d635fbe92168(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi Ron!
By the way, thanks for the QSO this (Saturday, 5 April) afternoon
on AO-27. I was parked SE of Flagstaff AZ, dealing with a strong
wind while working that pass.
><snipped reference to K5GNA-modded S-band downconverter>
>
> With this setup, can I mount the Mode S downcoverter and have a
> reasonable chance at getting it to work or should I look at some type of
> patch antenna to get better signal picket ? Is mode S a little less
> unforgiving so that I have to have it more directed at the satellite
> than I can get away with on my current VHF/UHF antenna setup ?
For AO-51, you can receive it easily with just the dipole and corner
reflector on that downconverter. Some have replaced the dipole
with a Yagi, and you could even go with some of the 2.4 GHz WiFi
antennas. AO-51 is transmitting on S-band at 2 or 2.5W when it
is there, so in a low orbit you should be able to hear it.
As for dealing with the Doppler at S-band, computer-control of
your downlink radio is desireable. It *can* be done manually, but
with the shift of around 55 kHz +/- you are adjusting the receive
frequency almost all the time. When I have worked AO-51's
S-band downlink, I would not have the benefit of computer control
for my portable setup. I would be almost constantly adjusting the
downlink frequency, but with 5 kHz tuning steps on my downlink
receiver (VX-2R connected to the downconverter) I did OK.
Good luck and 73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 8
Date: Sun, 6 Apr 2008 06:10:07 -0500
From: "Nick Pugh" <quadpugh(AT)bellsouth.net>
Subject: [amsat-bb] recording software
To: <amsat-bb(AT)amsat.org>
Message-ID: <004201c897d6$c5e2a6a0$6301a8c0(AT)nick1>
Content-Type: text/plain; charset="iso-8859-1"
Hi AMSATERS
I have ask the list before but have not gotten a good response. I am looking
for shareware program that will record audio based on time that you enter.
Skypipe comes close but it only let's you put one record time.
thanks
nick
------------------------------
Message: 9
Date: Sun, 06 Apr 2008 11:24:26 +0000
From: G8IFF/KC8NHF <nigel(AT)ngunn.net>
Subject: [amsat-bb] Re: recording software
To: Nick Pugh <quadpugh(AT)bellsouth.net>
Cc: amsat-bb(AT)amsat.org
Message-ID: <47F8B2EA.8010602(AT)ngunn.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Is it possible that you got a poor response because nobody had the
required answer?
Nick Pugh wrote:
> Hi AMSATERS
> I have ask the list before but have not gotten a good response.
------------------------------
Message: 10
Date: Sun, 6 Apr 2008 12:54:50 +0100
From: Robert Turlington <rob_g8ate(AT)hotmail.com>
Subject: [amsat-bb] COSMONAUTICS DAY 12th APRIL SPECIAL CALLSIGN GB0CD
ON AIR
To: Amsat Buleitin Board <amsat-bb(AT)amsat.org>
Cc: Andy Thomas <andythomasmail(AT)yahoo.co.uk>,
"bolide(AT)meteor-science.com" <bolide(AT)meteor-science.com>, malcolm
hall
<malcolm.hall2(AT)ntlworld.com>, "Geoffg4afj(AT)aol.com"
<geoffg4afj(AT)aol.com>, "edward.coleman(AT)ntlworld.com"
<edward.coleman(AT)ntlworld.com>, Matt Biddles
<mattobr(AT)ntlworld.com>
Message-ID: <BAY112-W528352C94D557782B9AF09C0F00(AT)phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"
HI ALL
JOHN G7HIA AND MYSELF WILL BE USING THE SPECIAL CALL SIGN GB0CD 'COSMONAUTICS
DAY' ON THE 12th APRIL 2008 BETWEEN 0800 &2200 hrs UTC
ON AO7,AO16,AO27,SO50,AO51 & VO52 DETAILS TO FOLLOW LATER ON IN THE WEEK. SOME
OPERATION MAY TAKE PLACE OVER THE FOLLOWING 4 WEEKS WITH PROPOSED SSTV AND
OTHER MODES POSSIBLY FIELD HELL
Regards Robert G8ATE
_________________________________________________________________
The next generation of Windows Live is here
http://www.windowslive.co.uk/get-live
------------------------------
Message: 11
Date: Sun, 06 Apr 2008 08:24:29 -0400
From: "jkelly" <jkelly(AT)bellatlantic.net>
Subject: [amsat-bb] Re: recording software
To: "Nick Pugh" <quadpugh(AT)bellsouth.net>, "AMSAT" <amsat-bb(AT)amsat.org>
Message-ID: <002301c897e1$2a103480$6801a8c0(AT)MASTER>
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply-type=original
Don't know if this will help but I use this program to record
web video/audio streams on a schedule:
http://www.applian.com/replay-av/index.php
Jeff
----- Original Message -----
From: "Nick Pugh" <quadpugh(AT)bellsouth.net>
To: <amsat-bb(AT)amsat.org>
Sent: Sunday, April 06, 2008 7:10 AM
Subject: [amsat-bb] recording software
> Hi AMSATERS
> I have ask the list before but have not gotten a good response. I am
> looking for shareware program that will record audio based on time that
> you enter. Skypipe comes close but it only let's you put one record time.
>
>
> thanks
> nick
> _______________________________________________
> 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: 12
Date: Sun, 06 Apr 2008 08:40:41 -0400
From: Dee <morsesat(AT)optonline.net>
Subject: [amsat-bb] [ans] ANS-097 AMSAT Weekly Bulletins
To: Amsat BB <amsat-bb(AT)amsat.org>
Message-ID: <47F8C4C9.5030605(AT)optonline.net>
Content-Type: text/plain; charset=windows-1252; format=flowed
AMSAT NEWS SERVICE
ANS-097
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:
* Dayton Forums Schedule
* AMSAT Booth Volunteers
* DelfiC3 Update
* AMSAT Room Block at Dayton
* AO-51 Update
* ARISS Status - 24 March 2008
SB SAT (AT) AMSAT $ANS-097.01
Dayton Forums Schedule
AMSAT News Service Bulletin 097.01
From AMSAT HQ SILVER SPRING, MD.
April 6, 2008
To All RADIO AMATEURS
BID: $ANS-097.01
AMSAT Forum at Dayton Hamvention 0900-1130 Saturday, May 17
Forum Room 5
We have a great lineup of speakers for the AMSAT Fourm at Dayton this
year. The forum will concentrate on discussing AMSAT projects and
activites for this year.
Moderator: Barry A. Baines, WD4ASW AMSAT Corporate Secretary &
VP-Special Projects
Rick Hambly, W2GPS AMSAT President and Robert Davis, KF4KSS AMSAT
Director-Spacecraft Integration and Lab Manager, "AMSAT Update". Rick
will present a status report on the Intelsat Negotiations, a brief
update on Eagle, and AMSAT-DL's Phase 3-E Project. Bob will provide an
overview of AMSAT's new Integration Lab in Pocomoke, MD as well as
discuss the HASP (High Altitude Student Payload) and Cubesat Projects
that are under development at the Lab.
Gould Smith, WA4SXM, AMSAT VP-Member & User Services, Andrew
Glasbrenner, KO4MA AMSAT VP-Operations, and Mark Hammond, N8MH AMSAT
Command Station, "AMSAT Satellite Operations Update" which will provide
an overview of AO-51 as well as highlight how AO-16 has been
reconfigured as a voice repeater satellite.
Matt Ettus, N2MJI, ACP System Engineer and Michelle Thompson, W5NYV ACP
Ground Station Development Engineer, "AMSAT's Advanced Communications
Package (ACP)". Matt and Michelle will provide an overview of the new
communications system currently under development for Eagle and a
potential payload package to be placed on a commercial geostationary
satellite. ACP is designed to provide emergency communications using
portable ground stations as well as make it possible for amateurs living
in areas with CC&R restrictions to be able to communicate via our next
generation satellite. They will explain why ACP is being developed and
discuss both the work being done on the payload as well as the ground
station component that is being developed concurrently.
Frank Bauer, KA3HDO AMSAT Director-Manned Space Programs, "A Ham Radio
Operator's View of ARISS". Frank will outline several new initiatives
under development for Amateur Radio on the International Space Station
(ARISS) that will interest amateur radio operators as well as provide an
overview of SuitSat-2 currently under development.
[ANS thanks Gould, WA4SXM, for the above information]
/EX
SB SAT (AT) AMSAT $ANS-097.02
AMSAT Booth Volunteers
AMSAT News Service Bulletin 097.02
From AMSAT HQ SILVER SPRING, MD.
April 6, 2008
To All RADIO AMATEURS
BID: $ANS-097.02
AMSAT Booth Volunteers for Dayton 2008
I am looking for volunteers to help in the AMSAT booth during the 2008
Dayton Hamvention, May 16-18. I would like people to volunteer for 2
hour shifts on Friday, Saturday and Sunday. Multiple shifts are
welcome. I also need help with booth setup and take down on Thursday
May 15 and Sunday May 18. With enough people we have been able to setup
and take down the booth in 3 - 4 hours ( or less). Please volunteer to
Gould, WA4SXM at his callsign(AT)amsat.org. This is a great opportunity to
give back to AMSAT and to have an enjoyable time talking with other
AMSAT members and future members.
[ANS thanks Gould, WA4SXM, for the above information]
/EX
SB SAT (AT) AMSAT $ANS-097.03
DelfiC3 Update
AMSAT News Service Bulletin 097.03
From AMSAT HQ SILVER SPRING, MD.
April 6, 2008
To All RADIO AMATEURS
BID: $ANS-097.03
DelfiC3 Provisional launch date April 21st
April 4th, 2008
Greetings from the clean room at Sriharikota!
The Delfi-C3 checkout team has safely arrived at the launch site
in India, and we are currently performing all checks on the space-
craft.
So far, everything goes as planned and we have found no problems.
Unfortunately, photography is not allowed on the base so you'll have
to use your imagination for now. Meanwhile, we will try to keep you
updated by posting text-only blog entries.
At this very moment, the team is building up the satellite into launch
configuration, which means attaching the solar panels, the wireless
sun sensors, and applying the final pieces of thermal tape and locking
glue. All major health checks have been successfully completed up to
this point so we know the spacecraft is in good health.
The linear transponder was tested for the last time before launch, and
it worked just fine.
Frequencies:
* Primary telemetry downlink: 145.870 MHz 1200 Baud BPSK AX.25 400mW
* Backup telemetry downlink: 145.930 MHz 1200 Baud BPSK AX.25 400mW
* Linear transponder passband downlink: 145.880 - 145.920 MHz (inverting)
400mW PEP
* Linear transponder passband uplink: 435.570 - 435.530 MHz
* Transponder mode beacon: 145.870 MHz CW (10dB below transponder PEP)
Monitor http://www.delfic3.nl/photoblog/ for updates!
[ANS thanks Wouter Jan Ubbels VU/PE4WJ for the above information]
/EX
SB SAT (AT) AMSAT $ANS-097.04
AMSAT Room Block at Dayton
AMSAT News Service Bulletin 097.04
From AMSAT HQ SILVER SPRING, MD.
April 6, 2008
To All RADIO AMATEURS
BID: $ANS-097.04
Once again, Dayton is about 6 weeks away. If you plan to attend,
we have a block of rooms reseved every year for our group.
Please call Martha with C/C info and the days you plan to be there
and she will make the reservations for you.
[ANS thanks Martha for the above information]
/EX
SB SAT (AT) AMSAT $ANS-097.05
AO-51 Update
AMSAT News Service Bulletin 097.05
From AMSAT HQ SILVER SPRING, MD.
April 6, 2008
To All RADIO AMATEURS
BID: $ANS-097.05
AO-51 is running less power than last week.
Gould, WA4SXM, AO-51 Command station reported that the transmitter
power levels on AO-51 have been reduced.
1) The SQRX receiver is on for L band uplink for the bulletin board
2) We are starting to enter a new eclipse cycle this week.
TX B (analog) is 700 mW (was 820 mW)
TX A (digital) is 550 mW (was 550 mW)
We will reduce power slowly until mid June (eclipse length maximum),
then slowly increase it until early Sept when we will again enter a
no eclipse period for a number of months.
[ANS thanks Gould, WA4SXM for the above information]
/EX
SB SAT (AT) AMSAT $ANS-097.06
ARISS Status - April 3, 2008
AMSAT News Service Bulletin 097.06
From AMSAT HQ SILVER SPRING, MD.
April 6, 2008
To All RADIO AMATEURS
BID: $ANS-097.06
Amateur Radio on the International Space Station (ARISS) Status Report
1. Upcoming School Contacts
An Amateur Radio on the International Space Station (ARISS) contact has
been scheduled with Osnovna skola Pazin in Pazin, Croatia on Monday,
April 7 at 14:52 UTC. Eight hundred students are enrolled at the school
which has offered technical classes in robotics, electronics and
computer science for the past ten years. Students from Pazin?s two high
schools are also expected to attend this event. The schools hope to
pique the students? interest in space and electronics through this
educational activity.
2. Kodomo Contact Successful
Youth from the Kodomo Support Project in Kyoto, Japan participated in a
successful Amateur Radio on the International Space Station (ARISS)
contact on Wednesday, March 26. One hundred thirty parents and community
members watched as eighteen children asked astronaut Garrett Reisman,
KE5HAE, twenty questions before the ISS went over the horizon. Three
television stations, including NHK, the Japan Broadcasting Corporation,
and seven newspapers covered the event. To view a video of the contact,
go to: http://www.ariss.jp/kyoto/Kyoto.wmv
3. Shukor Crew Debrief Held
An Amateur Radio on the International Space Station (ARISS) crew debrief
was held on Tuesday, March 25. Spaceflight participant Sheikh Muszaphar
Shukor, 9W2MUS provided the team with feedback on his experience with
ARISS contacts while onboard the ISS.
4. Articles Cover Upcoming Garriott Activities
Articles have been posted covering the educational activities that
Richard Garriott, W5KWQ, has planned while onboard the International
Space Station. These activities include contacting children at the
Challenger Learning Centers and taking part in amateur radio contacts.
Prior to flight, children can take part in a contest creating a design
for a patch. Spaceref.com and the Challenger Center articles may be
viewed here: http://www.spaceref.com/news/viewpr.html?pid=25010
http://www.challenger.org/programs/garriottdownlinks.cfm
5. Astronaut Training Status
An Amateur Radio on the International Space Station (ARISS) training
session has been planned for astronauts Bob Thirsk, VA3CSA, and Chris
Hadfield, KC5RNJ/VA3OOG, on Thursday, April 17. Thirsk is a scheduled
crew member on Expedition 19; Hadfield is his back-up.
[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,
Dee Interdonato, NB2F
nb2f at amsat dot org
------------------------------
Message: 13
Date: Sun, 6 Apr 2008 20:14:41 +0530
From: "Prathap Kumar" <vu2pop(AT)gmail.com>
Subject: [amsat-bb] Re: metal or non metal cross booms
To: <amsat-bb(AT)amsat.org>
Message-ID: <001601c897f4$c1fda8a0$1901a8c0(AT)p9c9fa16b80794>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi
I got the thick wall Blue PVC pipes used for plumbing wrapped in fibreglass
mat and its been in use for over ten years now.
The final OD is now about 40mm.
It does support both my cross yagis on the rotator.
I am also looking for the fibreglass tube with thick wall and hope to get
some here in Bangalore and will keep you informed Gopal.
Best 73
Pop
VU2POP
> Gopal,
>
> A good decision that you made. A study by Kent, WA5VJB, shows that
> only some sensitivity of position between elements on the antenna
> boom impacts using a metal crossboom if the antenna is mounted in the
> "X" confinguration. My satellite antennas are mounted this way.
>
> 73 Ed - KL7UW
>
> At 05:50 PM 4/5/2008, Gopal Madhavan wrote:
>>I have experimented with both non-metallic and metallic cross booms after
>>reading numerous articles on the subject some years ago. With CP antennae
>>mounted in X configuration there seems to be hardly any difference in
>>performance. I speak of experiments done when AO-40 was active.
>>
>>I now use a metallic boom as it gives very good rigidity to mount two CP
>>antennae, a small dish for 2.4 GHz, preamps etc. Here in India I do not
>>have
>>the option to order a good section of fibre glass cross boom any way, and
>>so
>>had made do with PVC tube wrapped in fibre glass, but it eventually sagged
>>and I had to periodically rotate it 180 degrees to keep it somewhat level.
>>
>>Gopal VU2GMN
>>
>>
>>_______________________________________________
>>Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
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>>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> 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!
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------------------------------
Message: 14
Date: Sun, 6 Apr 2008 11:54:55 -0400
From: "Joel Kandel" <kandelj(AT)bellsouth.net>
Subject: [amsat-bb] G-5500 lubrication
To: "AMSAT-BB" <amsat-bb(AT)amsat.org>
Message-ID: <F4BD9A2CE3654B0F8185BCC33C34369F(AT)OwnerPC>
Content-Type: text/plain; charset="Windows-1252"
Am abut to put up a G-5500 rotor and noticed on the test bench that the
elevation rotor makes a but of a grinding noise when it operates. More so than
the azimuth rotor.
1. Is this noise normal?
2. Is it worth trying to open the rotor and grease the beartings or whatever
is making the grinding noise?
3. Any pitfalls to opening the unit? I have worked successfully on Ham IV
rotors in the past.
Thanks,
Joel Kandel, KI4T
------------------------------
Message: 15
Date: Sun, 06 Apr 2008 09:29:04 -0700
From: Jeff Mock <jeff(AT)mock.com>
Subject: [amsat-bb] Re: recording software
To: amsat-bb(AT)amsat.org
Message-ID: <47F8FA50.30203(AT)mock.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Nick Pugh wrote:
> Hi AMSATERS I have ask the list before but have not gotten a good
> response. I am
looking for shareware program that will record audio based on time that
you enter. Skypipe comes close but it only let's you put one record time.
Audacity is a nice piece of free software (which is not to be confused
with shareware, but that's a different topic). It's a pretty full
featured audio recorder. It's ported to Mac/Windows as well as
Linux/Unix so it probably runs on your favorite OS.
Starting in version 1.3 it has a timed recording feature that might get
your started:
http://audacity.sourceforge.net/download/features-1.3-k.php
Audacity can also be programmed from a shell script or controlled from
another small program if you are looking to do some sort of
sophisticated timed recording, like record every AO-51 pass over my
location.
jeff
AD6EO
------------------------------
_______________________________________________
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!
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End of AMSAT-BB Digest, Vol 3, Issue 172
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