| |
CX2SA > SATDIG 18.04.10 16:34l 1308 Lines 41401 Bytes #999 (0) @ WW
BID : AMSATBB5175
Read: GUEST
Subj: AMSAT-BB-digest V5 175
Path: IZ3LSV<IW0QNL<OK4PEN<OK2PEN<CX2SA
Sent: 100418/1526Z @:CX2SA.LAV.URY.SA #:54095 [Minas] FBB7.00e $:AMSATBB5175
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Arecibo (Greg D.)
2. Preamp mounting? (Greg D.)
3. FW: Re: Arecibo (ps8rf Piraja)
4. Re: Preamp mounting? (Edward Cole)
5. Re: Arecibo (Gordon JC Pearce)
6. Re: Arecibo (Rick - WA4NVM)
7. Yaesu 736 help (Nick Pugh K5QXJ)
8. SatPC32 with Icom 706MK2G (John Germanos)
9. FW: [ans] ANS-108 AMSAT Weekly Bulletins for approval (Dee)
10. HO-68 Schedule - 18-25 Apr 2010 (Alan Kung)
11. Call for Papers--2010 ARRL/TAPR Digital Communications
Conference (Mark Thompson)
12. Arecibo recordings (Luc Leblanc)
----------------------------------------------------------------------
Message: 1
Date: Sat, 17 Apr 2010 17:12:12 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Arecibo
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W10DDCF4FB9CA6E1A10D0AA90C0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
So, I had pretty marginal copy in both SSB and CW, neither of which were
quite good enough to hold a QSO. The odd thing is that CW did NOT improve
things, even with the narrow filter on my FT-736R.
The antenna is a 2x16 CP thing I picked up at a swap meet (so I don't know
the brand). My copy was better with the CP relay UN-energized, so either
it's wired backwards, or something is broken. On the man-made satellites, I
have used both polarization settings, so I know they both work. Puzzle.
There's also a no-name preamp up there, after a bit of coax to get around
the rotor. Below the preamp is mostly hardline. Turning on the preamp
results in a small but noticeable rise in the base noise floor, so I believe
it is working. And I Just got down from the roof, after checking the aiming
using the sun. No problem there. I even played with my W9GR DSP box,
trying to pull out the signal. Didn't help much.
Don't get me wrong - it was a thrill just to hear the moon. But what's
wrong with my setup? The only other thing I can think of was that the moon
was north-east of me at the time, and that means aiming through a bit of oak
tree. Is that the problem?
Greg KO6TH
> Date: Sat, 17 Apr 2010 16:52:37 -0500
> From: pfeufferm@xxxxx.xxx
> To: domenico.i8cvs@xxx.xxx amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: Arecibo
>
> This was my experience with a KLM 435-40CX and no preamp into a
> FT-736R. I had to energize the relay on the antenna in order to hear
> them. I assume it's RHCP normally, and LHCP when the relay is energized.
>
> I actually had better copy during the SSB portion than the CW, but am
> not sure why that was.
>
> --Mike WQ5C
>
>
> On 4/17/2010 4:31 PM, i8cvs wrote:
> > Hi Bob, W7LRD
> >
> > What polarization have you used on your 40 el cp ? RHCP or LHCP ? I am
sure
> > that with LHCP it was a very consistant signal and with RHCP nothing was
> > heard.
> >
> > Please confirm !
> >
> > Tanks
> >
> > 73" de
> >
> > i8CVS Domenico
> >
> > ----- Original Message -----
> > From: "Bob- W7LRD"<w7lrd@xxxxxxx.xxx>
> > To:<amsat-bb@xxxxx.xxx>
> > Sent: Saturday, April 17, 2010 10:57 PM
> > Subject: [amsat-bb] Arecibo
> >
> >
> >
> >>
> >> Very consistant signal 910/40el cp. I wish they would use dxpedition qso
> >>
> > methods for more qso/hr. This is a very finite opportunity. Had fun
anyway,
> > better luck tomorrow.
> >
> >> 73 Bob W7LRD
> >> _______________________________________________
> >> Sent via AMSAT-BB@xxxxx.xxx. 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
> >>
> >>
> >
> >
> > _______________________________________________
> > Sent via AMSAT-BB@xxxxx.xxx. 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
> >
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
_________________________________________________________________
Hotmail has tools for the New Busy. Search, chat and e-mail from your inbox.
http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:
en-US:WM_HMP:042010_1
------------------------------
Message: 2
Date: Sat, 17 Apr 2010 17:42:55 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Preamp mounting?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W29ED820DD479B74D9E377AA90C0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi folks,
So, a follow-up to my previous message. All this discussion about EME got
me thinking... We're always taught to put your preamp as close to the feed
point as possible, but as with everything, there are tradeoffs. Where
should the Preamp be mounted?
Choices:
1 - on the antenna boom, at the feed point (or attached to the CP relay)
2 - on the rotor cross arm
3 - below the rotor, where the flex transitions to the main feed
I'm thinking that #1 is a problem. Yes, it's the shortest run, but you've
got the weight of the preamp
at the far end of the antenna, unbalancing things. Depending on the
antenna, it might be right in the middle of a bunch of elements, so putting
a metal box there might upset the antenna's performance or impedance. It's
would also be subjected
to the strong RF fields of the antenna during transmit.
#2 is probably the best; fairly short coax run on the antenna side, and
somewhat outside of the RF field.
#3 (what I have) is most convenient, and has one less set of connectors to
go bad, and one less wire to snake around the rotor. Weather proofing is
easier when the object being proofed can't move, and mounting the preamp on
the tower, for me at least, is a lot easier. And, it's not THAT much more
coax to the antenna.
Thoughts?
Greg KO6TH
_________________________________________________________________
The New Busy is not the too busy. Combine all your e-mail accounts with
Hotmail.
http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&ocid=PID28326
::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4
------------------------------
Message: 3
Date: Sun, 18 Apr 2010 01:30:19 -0300
From: ps8rf Piraja <ps8rf@xxxxxxx.xxx>
Subject: [amsat-bb] FW: Re: Arecibo
To: <amsat-bb@xxxxx.xxx>
Message-ID: <SNT121-W64F86F1121EEA44B1F4F03E00C0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hello,
During the last two weeks I was prepared to hold a QSO with KP4AO. I mounted
two yagi antennas with 13 elements (with a gain of approximately 17.4 dbd.)
.Stacked the two antennas. I bought a rotor G5500 and a Mirage amp d 3010,
who arrived in time here in Brazil. But unfortunately nothing listening.
I would like to thank dear friend Cor, PD0RKC for informing the address "
http://websdr.camras.nl:8901 ". I followed all QSO maintained by the KP4AO
team. The emotion was the same. For lack of an antenna analyzer, and my SWR
UHF meter to express problem. I lost my amplifier d 3010. Today I'll be
back on the web site http://websdr.camras.nl:8901 to listen the QSO' via
EME. Thanks.
73'
Piraja, PS8RF
The Amateur Radio is supportive and helpful in any circumstance.
_________________________________________________________________
O seu navegador tamb?m te ajuda a ficar longe de v?rus. Leia mais sobre
seguran?a.
http://www.microsoft.com/brasil/windows/internet-explorer/?WT.mc_id=1500
------------------------------
Message: 4
Date: Sat, 17 Apr 2010 23:46:41 -0800
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Preamp mounting?
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <201004180746.o3I7khKp020526@xxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Greg,
At 04:42 PM 4/17/2010, Greg D. wrote:
>Hi folks,
>
>So, a follow-up to my previous message. All this discussion about
>EME got me thinking... We're always taught to put your preamp as
>close to the feed point as possible, but as with everything, there
>are tradeoffs. Where should the Preamp be mounted?
>
>
>
>Choices:
>
>1 - on the antenna boom, at the feed point (or attached to the CP relay)
>
>2 - on the rotor cross arm
>
>3 - below the rotor, where the flex transitions to the main feed
>
>
>
>I'm thinking that #1 is a problem. Yes, it's the shortest run, but
>you've got the weight of the preamp
>at the far end of the antenna, unbalancing things. Depending on the
>antenna, it might be right in the middle of a bunch of elements, so
>putting a metal box there might upset the antenna's performance or
>impedance. It's would also be subjected
>to the strong RF fields of the antenna during transmit.
Best place on the antenna is just behind the reflector
element. Weight should not be that bad. Maybe a 100# 1Kw PA, but
not a little preamp. As one goes up in frequency it becomes more
important to mount the preamp as close to the feed as possible. It
because of the higher loss in feedline as you go into the
microwaves. For 144 and 432, a few feet of LMR-400 will not degrade
things too much.
>#2 is probably the best; fairly short coax run on the antenna side,
>and somewhat outside of the RF field.
That is practical and what a lot of us do even on eme. Run low-loss
coax between antenna and preamp.
>#3 (what I have) is most convenient, and has one less set of
>connectors to go bad, and one less wire to snake around the
>rotor. Weather proofing is easier when the object being proofed
>can't move, and mounting the preamp on the tower, for me at least,
>is a lot easier. And, it's not THAT much more coax to the antenna.
I have to do it that way because I have an 18-foot long feedline
coming from each of my antenna in my 2m eme array that are combined
at the middle on top of the elevation crossboom. Then a ten-foot
coax jumper around the two axis of rotation to a hoffman box that
contains my preamp and six coax relays (three are between the antenna
and my preamp). That is too much stuff to mount closer. The result
is that my 2m-eme preamp has 28-feet of coax to a single
antenna. That adds close to 0.5 dB loss ahead of the preamp (and
adds 0.5 dB to the NF of the preamp).
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
------------------------------
Message: 5
Date: Sun, 18 Apr 2010 09:57:59 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] Re: Arecibo
To: amsat-bb@xxxxx.xxx
Message-ID: <1271581079.13491.3.camel@xxxxx.xxxx>
Content-Type: text/plain; charset="UTF-8"
I heard it last night, around 2045UTC on 432.0564MHz with my 11-element
ex-PMR yagi and Kenwood TH-F7E at my QTH in IO75vs. The CW was a bit
too fast for me to copy, and it was all a bit noisy (moon pretty close
to the horizon) but if I'd stuck in at the Koch method (I should spend
more time on http://lcwo.net ) then I could easily have copied it. I'd
say I had it about 519.
Gordon MM0YEQ
------------------------------
Message: 6
Date: Sun, 18 Apr 2010 06:41:57 -0500
From: "Rick - WA4NVM" <wa4nvm@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Arecibo
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <7FCF0DEF2EB04ADDA1780AC708A2356D@xxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Greg,
If you were pointing NE, that would be a problem. The moon was never north
of the
25 degree Lat. line. I would have always been on a South bearing from your
QTH.
I hope this helps,
Rick WA4NVM
>
> So, I had pretty marginal copy in both SSB and CW, neither of which were
> quite good enough to hold a QSO. The odd thing is that CW did NOT improve
> things, even with the narrow filter on my FT-736R.
>
> The antenna is a 2x16 CP thing I picked up at a swap meet (so I don't know
> the brand). My copy was better with the CP relay UN-energized, so either
> it's wired backwards, or something is broken. On the man-made satellites,
> I have used both polarization settings, so I know they both work. Puzzle.
>
> There's also a no-name preamp up there, after a bit of coax to get around
> the rotor. Below the preamp is mostly hardline. Turning on the preamp
> results in a small but noticeable rise in the base noise floor, so I
> believe it is working. And I Just got down from the roof, after checking
> the aiming using the sun. No problem there. I even played with my W9GR
> DSP box, trying to pull out the signal. Didn't help much.
>
> Don't get me wrong - it was a thrill just to hear the moon. But what's
> wrong with my setup? The only other thing I can think of was that the
> moon was north-east of me at the time, and that means aiming through a bit
> of oak tree. Is that the problem?
>
> Greg KO6TH
>
>
>> Date: Sat, 17 Apr 2010 16:52:37 -0500
>> From: pfeufferm@xxxxx.xxx
>> To: domenico.i8cvs@xxx.xxx amsat-bb@xxxxx.xxx
>> Subject: [amsat-bb] Re: Arecibo
>>
>> This was my experience with a KLM 435-40CX and no preamp into a
>> FT-736R. I had to energize the relay on the antenna in order to hear
>> them. I assume it's RHCP normally, and LHCP when the relay is energized.
>>
>> I actually had better copy during the SSB portion than the CW, but am
>> not sure why that was.
>>
>> --Mike WQ5C
>>
>>
>> On 4/17/2010 4:31 PM, i8cvs wrote:
>> > Hi Bob, W7LRD
>> >
>> > What polarization have you used on your 40 el cp ? RHCP or LHCP ? I am
>> > sure
>> > that with LHCP it was a very consistant signal and with RHCP nothing
>> > was
>> > heard.
>> >
>> > Please confirm !
>> >
>> > Tanks
>> >
>> > 73" de
>> >
>> > i8CVS Domenico
>> >
>> > ----- Original Message -----
>> > From: "Bob- W7LRD"<w7lrd@xxxxxxx.xxx>
>> > To:<amsat-bb@xxxxx.xxx>
>> > Sent: Saturday, April 17, 2010 10:57 PM
>> > Subject: [amsat-bb] Arecibo
>> >
>> >
>> >
>> >>
>> >> Very consistant signal 910/40el cp. I wish they would use dxpedition
>> >> qso
>> >>
>> > methods for more qso/hr. This is a very finite opportunity. Had fun
>> > anyway,
>> > better luck tomorrow.
>> >
>> >> 73 Bob W7LRD
>> >> _______________________________________________
>> >> Sent via AMSAT-BB@xxxxx.xxx. 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
>> >>
>> >>
>> >
>> >
>> > _______________________________________________
>> > Sent via AMSAT-BB@xxxxx.xxx. 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
>> >
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. 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
>
> _________________________________________________________________
> Hotmail has tools for the New Busy. Search, chat and e-mail from your
> inbox.
>
http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:
en-US:WM_HMP:042010_1
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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, 18 Apr 2010 06:42:45 -0500
From: "Nick Pugh K5QXJ" <quadpugh@xxxxxxxxx.xxx>
Subject: [amsat-bb] Yaesu 736 help
To: <amsat-bb@xxxxx.xxx>
Message-ID: <00ac01cadeec$4397f240$cac7d6c0$@xxx>
Content-Type: text/plain; charset="us-ascii"
I have a Yaesu 736 running with satpc32. It has work find until today now
the tx frequency and mode cannot be set by satpc32. Satpc32 does change the
rx frequency and I have played with the delay setting in satpc32.
Any suggestions??
Thanks
nick
Office 337 593 8700
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
------------------------------
Message: 8
Date: Sun, 18 Apr 2010 08:12:47 -0500
From: "John Germanos" <wb9pnu@xxxxxxx.xxx>
Subject: [amsat-bb] SatPC32 with Icom 706MK2G
To: "amsat-bb@xxxxx. org" <amsat-bb@xxxxx.xxx>
Message-ID: <FCEBILKJBICLKKPHONNDAEAICHAA.wb9pnu@xxxxxxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Has anyone sucessfully interfaced an Icom706 with SatPC32?
The radio is not mentioned on the list.
John WB9PNU
------------------------------
Message: 9
Date: Sun, 18 Apr 2010 09:36:38 -0400
From: Dee <morsesat@xxxxxxxxx.xxx>
Subject: [amsat-bb] FW: [ans] ANS-108 AMSAT Weekly Bulletins for
approval
To: Amsat BB <amsat-bb@xxxxx.xxx>
Cc: dee at work <dinterdo@xxxxxx.xxx>
Message-ID: <155F739E0F124664ACE2A487E9950D27@xxxxxxxx>
Content-Type: text/plain; charset=iso-8859-1
AMSAT NEWS SERVICE
ANS-108
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@xxxxx.xxx
********************************************************************
* The AMSAT team is preparing for the 2010 Dayton Hamvention AMSAT *
* Booth and activities. For the latest information go to: *
* http://www.amsat.org/amsat-new/hamvention/2010/Dayton.php *
********************************************************************
In this edition:
* BOD Nominations Due
* AO-51 New PL Operation Being Tested
* Deadline Extension To Reserve Rooms in AMSAT Block At Dayton
* Matching Funds Opportunity
* SO-67 Operation Expected to Resume Soon
* Dayton Happenings
* Satellite Shorts From All Over
* Arecibo on 432 MHz Moon Bounce (still time today)
* ARISS Status - 12 April 2010
SB SAT @ AMSAT $ANS-108.01
BOD Nominations Due
AMSAT News Service Bulletin 108.01
From AMSAT HQ SILVER SPRING, MD.
April 18, 2010
To All RADIO AMATEURS
BID: $ANS-108.01
It is time to submit nominations for the upcoming open seats on the
AMSAT--NA Board of Directors. A nomination requires either one Member
Society or five current individual members to nominate an AMSAT member
for the position. Three director's terms expire this year:
Tom Clark, K3IO, Lou McFadin, W5DID and Gould Smith, WA4SXM.
Nominations must be in writing and mailed to:
AMSAT, 850 Sligo Ave #600, Silver Spring MD 20910.
They can arrive no later than June 15th.
[ANS Thanks Martha for the above information]
SB SAT @ AMSAT $ANS-108.02
AO-51 New PL Operation Being Tested
AMSAT News Service Bulletin 108.02
From AMSAT HQ SILVER SPRING, MD.
April 18, 2010
To All RADIO AMATEURS
BID: $ANS-108.02
AO-51 67Hz Access Tone Experiment in Progress
The AO-51 Control Team has enabled the new PL routine. This improved
routine will turn the downlink on with an unsquelched uplink when it
hears a 67 Hz tone. At present there is a tail of several minutes so
the transmitter will stay on without hearing the tone.
AO-51 users are urged to program in a 67 Hz PL tone again, but this is
not absolutely required as long as someone else in the footprint has
already enabled the satellite with the tone. It also means if you are
the first person in the footprint (not very likely in North America,
Europe, or Japan) you might not hear the satellite until after it hears
67 Hz for a few seconds.
Mark, N8MH commented on the new operating mode, "The transmitter shuts
off (for about a second, maybe less) after 2 minutes, even if people
are talking with a 67Hz tone. So, a new 120 second period will not start
until the current one ends."
Andre, ZS2BK observed, "On a south to north pass into ZS, the bird was
off and was switched on with the tone. It stayed on for 120 seconds. It
goes off momentarily as a tone equipped station is transmitting."
The latest AO-51 Control Team news can be viewed on-line at:
http://www.amsat.org/amsat-new/echo/CTNews.php
[ANS thanks the AO-51 Control Team for the above information]
SB SAT @ AMSAT $ANS-108.03
Deadline Extension To Reserve Rooms in AMSAT Block At Dayton
AMSAT News Service Bulletin 108.03
From AMSAT HQ SILVER SPRING, MD.
April 18, 2010
To All RADIO AMATEURS
BID: $ANS-108.03
Again, a friendly reminder that the cutoff date for the
AMSAT block of rooms in Dayton has been extended until
April 20th. If you are planning to stay with us,
please call me at 301-589-6062 to make your reservation.
I will need a credit card number to hold the room.
[ANS thanks Martha for the above information]
SB SAT @ AMSAT $ANS-108.04
Matching Funds Opportunity
AMSAT News Service Bulletin 108.04
From AMSAT HQ SILVER SPRING, MD.
April 18, 2010
To All RADIO AMATEURS
BID: $ANS-108.04
Matching Funds Opportunity
The Dayton Amateur Radio Association (DARA) will match one-for-one
any donations made to AMSAT between now and June 30, 2010 up to a
maximum of $5,000. You can make your donation count even more.
Now is the time to accept the DARA challenge. Please support
"Getting AMSAT Back into Space" and help us raise the funds
needed for our next satellite project.
AMSAT's Project "Fox" is a cubesat that will provide a 2 meter-70
Centimeter FM transponder that will match the ground performance of
AO-51. You can send your donation to: AMSAT, 850 Sligo Ave #600,
Silver Spring MD 20910. If you prefer, you can call Martha at the
AMSAT office (US call toll free at 888-322-6728 or 301-589-6062)
and contribute with a credit card.
[ANS thanks Martha for the above information]
SB SAT @ AMSAT $ANS-108.05
SO-67 Operation Expected to Resume Soon
AMSAT News Service Bulletin 108.05
From AMSAT HQ SILVER SPRING, MD.
April 18, 2010
To All RADIO AMATEURS
BID: $ANS-108.05
SO-67 Operation Expected to Resume Soon
The SA AMSAT web page at http://www.amsatsa.org.za/ says, "Amateur
Radio operation is expected to return soon. Keep an eye on the SA-
AMSAT web page. All requests for SO67 operation will be handled by
SA AMSAT and schedules will be published on http://www.amsatsa.org.za.
Details on how to apply for operation in your area will be announced
soon."
This month saw the transfer of the control of the satellite from Sun-
space to the CSIR?s Satellite Application Centre at Hartebeeshoek.
Sunspace will continue working on the commission of some of the ex-
perimental payload which include the NMMU string experiment, the DOC
communication experiment and the VLF experiment from UKZN.
Although a hugely successful mission thus far, the past six months
have been challenging for Engineers at Sunspace and unfortunately not
without incident.
?We suffered a permanent loss of the Z-axis reaction wheel early on
during commissioning? Jan-Albert Koekemoer commissioning engineer at
Sunspace said. We adapted the Attitude Determination and Control Sys-
tem (ADCS) algorithms so as to still allow for controlled imaging with
the remaining two wheels - Yaw-control was then slightly impeded and
the off-Nadir Roll angle limited to ?20?.?
?Due to a power system anomaly, we have also lost access to one of the
two CCD control boards. Each control board interfaces to one three-
colour CCD. The board we lost contains the Green, Xantrophyl and Blue
spectral bands. The remaining board contains the Red, Red-Edge and Near-
Infrared bands.?
?We recently also lost the Y-axis reaction wheel (most likely also
due to a power distribution failure), this meant the loss of three-axis
control, but amazingly we can still take high-resolution images as
before." An image captured by SUMBANDILASAT can be seen at:
http://www.amsatsa.org.za/
[ANS thanks SA AMSAT for the above information]
SB SAT @ AMSAT $ANS-108.06
Dayton Happenings
AMSAT News Service Bulletin 108.06
From AMSAT HQ SILVER SPRING, MD.
April 18, 2010
To All RADIO AMATEURS
BID: $ANS-108.06
AMSAT/TAPR Banquet
Dr. Bob McGwier will be the speaker at the 2010 AMSAT/TAPR Banquet.
Bob has been a very active volunteer in both organizations for many
years and always delivers an enteraining and informative presentation.
Reserved tickets may be ordered via the AMSAT Web site store or by
calling Martha at the AMSAT office (301) 589-6062.
========================================================================
AMSAT Forum at Dayton
The 2010 AMSAT Forum at the Dayton Hamvention will be on:
Saturday, May 15 from 11:15 am to 1:30 pm in Forum Room 5
Alan Biddle, WA4SCA will moderate the Forum
Speakers
Barry Baines, WD4ASW, AMSAT President, "AMSAT Status Report"
What is happening within AMSAT? AMSAT President Barry Baines will
highlight current activities within AMSAT and discuss some of the
challenges facing the organization.
Drew Glasbrenner, KO4MA, AMSAT VP Operations,"AMSAT Satellite Operations
and International Satellite Operations".
Drew, AMSAT VP of Operations, will discuss operational AMSAT satellites
as well as update us on new and future International Satellites.
Mike Forsythe, AC2V, "Integrating Satellite Operations into DXpeditions"
Mike, K4T Team Leader will present the K4T DXpedition and how to have
satellite operations as a major part of DXpeditions, involving youth
and making it all work on green power!
Gould Smith, WA4SXM,AMSAT VP User Services, "Getting ARISSat-1
Ready to Fly".
Gould is the AMSAT Project Manager for ARISSat-1 and will talk about
the current status of the satellite project, testing and the delivery
of two satellites to Russia in July.
Alex Harvilchuck, N3NP, "NextGen CubeSat Program Update".
Alex, a Systems Engineer with IBM, is the NextGen CubeSat Program
Manager and will be providing an update on the Program.
A team of Binghamton University engineering students have been
modifying the power systems from ARISSat-1 for use in a 3U CubeSat,
with a U/V linear transponder, for AMSAT.
[ANS Thanks, Gould, WA4SXM, for the above information]
SB SAT @ AMSAT $ANS-108.07
Satellite Shorts From All Over
AMSAT News Service Bulletin 108.07
From AMSAT HQ SILVER SPRING, MD.
April 18, 2010
To All RADIO AMATEURS
BID: $ANS-108.07
Satellite Shorts From All Over
+ K4T DXpedition video of the recent DXpedition to Dry Tortugas was
unique in being entirely wind powered and having two amateur radio
satellite stations. They have posted a video at:
http://www.youtube.com/watch?v=ifoDk36CaWA
+ Gavin, M1BXF reports the Camb-hams, the social side of the Cambridge
Repeater Group (ex Pye telecoms group) will be active on FM and SSB
satellites as GS3PYE/P from grid IO67nt on the Island of Harris,
Scotland between May 1st and May 15th. More information can found on
their DXpedition webpage:
http://dx.camb-hams.com/dx-peditions/harris-dxpedition-10/
+ The 2010 CubeSat Developers' Workshop takes place this week at
Cal Poly in San Luis Obispo between April 21-23. A link to the
webcast of workshop forums has been posted at:
http://www.cubesat.org/index.php/workshops/upcoming-workshops
+ The Mexican Federal Telecommunications Commission ("CoFeTel"),
Mexico's "FCC", announced today that hams in Mexico have been
authorized the use of the 4B prefix for 2010, to commemorate
both the 200th anniversary of Mexican independence and the 100th
anniversary of the Mexican Revolution. With this in mind, maybe
we will hear some of our Mexican friends using this prefix on the
satellites throughout the rest of 2010.
+ The Houston AMSAT Net simulcasts via an Icecast streaming server
at this link: radio.arert.net:8000/amsat.m3u This net meets on
Tuesday 8PM Central Time (Wednesday 0100 UTC). The audio is also
available on Echolink in the *AMSAT* conference.
[ANS thanks everyone for the above information]
SB SAT @ AMSAT $ANS-108.08
Arecibo on 432 MHz Moon Bounce (still Time Today)
AMSAT News Service Bulletin 108.08
From AMSAT HQ SILVER SPRING, MD.
April 18, 2010
To All RADIO AMATEURS
BID: $ANS-108.08
The Arecibo Observatory Amateur Radio Club will be putting the
1000-foot radio telescope on the air for 432 MHz EME from
April 16-18.
It can be heard with a small hand-held yagi pointed at the moon.
The scheduled times of operation are:
April 18: 1840 - 2125 UTC(Today)
Callsign: KP4AO
Tx Frequency: 432.045 MHz
Rx Frequency: 432.050 to 432.060+
Tx power: 400 W
Antenna gain: 60 dBi
System noise temp: 120 K (cold sky)
System noise temp: 330 K (when pointed at moon)
KP4AO can be heard with a small hand-held yagi pointed
at the moon and a good receiver. A 15 dBi antenna and
100 W will be enough to work us on CW.
Operators at KP4AO will do their best to work as many
stations as possible. Each session will start with a brief
announcement and CQ in SSB. SSB QSOs may continue for 30
minutes to an hour, if the QSO rate remains high.
The mode will be shifted to CW as soon as it is judged that
higher QSO rates would result.
We will listen for calls at frequencies 5-15 kHz higher than
our own, and even higher if QRM warrants. Callers who
s-p-r-e-a-d o-u-t are more likely to be copied.
If you've already worked us in any mode, please do not call
again -- give others a chance.
If we call "CQ QRP", we will listen for stations running 100 W
or less to a single yagi. Please do not answer such a CQ if you
are running more power or have a larger antenna.
On April 18, if we reach a condition where most calling stations
have been worked, and we judge that operating in the digital mode
JT65B would produce a higher QSO rate, we will switch to JT65B.
Note that any of these planned operating strategies may be changed
as circumstances dictate.
We are extremely fortunate to have been granted access to the world's
largest radio telescope for this amateur radio good-will event.
We look forward to working as many stations as possible in the alloted time!
[ANS thanks John, KB1MGI, for the above information]
SB SAT @ AMSAT $ANS-108.09
ARISS Status - 12 April 2010
AMSAT News Service Bulletin 108.09
From AMSAT HQ SILVER SPRING, MD.
April 12, 2010
To All RADIO AMATEURS
BID: $ANS-108.09
Amateur Radio on the International Space Station (ARISS) Status Report
April 12, 2010
1. Upcoming School Contact
An Amateur Radio on the International Space Station (ARISS) contact has been
scheduled
for Jessup Elementary School in Houston, Texas on Monday, April 19 at 18:43
UTC. This
will be a telebridge connection through ground station WH6PN in Hawaii. The
school has
incorporated the ARISS activity into its curriculum, specifically focusing
on science,
math, and language arts instruction across the pre-kindergarten to fourth
grade levels.
2. Astronaut Timothy Creamer Speaks with Italian Students via ARISS
On Tuesday, April 6, on-orbit astronaut Timothy Creamer, KC5WKI participated
in an
Amateur Radio on the International Space Station (ARISS) contact with
students from
Scuola Primaria De Gasperi in Bari, Italy. The contact was held at the
Cittadella
Mediterranea della Scienza, which was designed to stimulate interest of the
general
public and especially youth, in fields of science and technology. To prepare
for the
contact, students studied principles of radio communications and space
missions and
were given a presentation on ARISS by ARISS mentor Francesco De Paolis,
IK0WGF. The
event drew an audience of more than 100 students, teachers and guests as
well as
members of the media. The contact audio and video were distributed
throughout
Europe and America by webcast, receiving 500 connections.
3. ISS Ham Debrief Held with Astronaut Jeff Williams
Expedition 21/22 astronaut Jeff Williams, KD5TVQ participated in an Amateur
Radio
on the International Space Station (ARISS) debrief session on Friday, April
9.
The feedback he provided on the ISS Ham radio equipment and school contacts
will
help the ARISS team improve program operations.
4. ARISSat Presentation to be Given at Dayton Hamvention
Dayton Hamvention 2010 will be held at the Hara Arena Complex in Dayton,
Ohio on
May 14 - 16. The American Radio Relay League (ARRL) and the Radio Amateur
Satellite Corporation (AMSAT) will both man exhibit booths at the event.
Gould Smith,
WA4SXM, AMSAT Project Manager for ARISSat-1, plans to give a presentation at
the AMSAT Forum titled, "Getting ARISSat-1 Ready to Fly." The Dayton
Hamvention
is an internationally attended amateur radio convention that draws crowds
of 25,000 annually. For more information on Dayton Hamvention 2010,
go to: http://www.hamvention.org/
5. Four Women in Space Hold Amateur Radio Licenses
Shuttle STS-131 launched on April 5, carrying three women into space:
Dorothy Metcalf-Lindenburger, KE5DAT, Stephanie Wilson, KD5DZE and JAXA
astronaut Naoko Yamazaki, KE5DAS. Upon docking with the ISS, they joined
Expedition 23 crew member Tracy Caldwell-Dyson, KF5DBF. This was the first
time that four women have been in space, and all are licensed hams.
Caldwell-Dyson will participate in her first Amateur Radio on the
International Space Station (ARISS) contact with Jessup Elementary
School in Houston on April 19. Let's hope they like to make random
contacts to give the Amateur Community some excitement.
[ANS thanks Carol, KB3LKI, for the above information]
73,
This week's ANS Editor,
Dee Interdonato, NB2F
nb2f at amsat dot org
------------------------------
Message: 10
Date: Sun, 18 Apr 2010 23:02:12 +0800
From: "Alan Kung" <alankung@xxxxxxx.xxx.xxx.xx>
Subject: [amsat-bb] HO-68 Schedule - 18-25 Apr 2010
To: <amsat-bb@xxxxx.xxx>
Message-ID: <006f01cadf08$2d165090$6c01a8c0@xxxxxxxxxxx>
Content-Type: text/plain; charset="gb2312"
18 Apr. 2010
================================
16:00...Turn On--SSB/CW
India, Africa, Middle East,
Europe,NA
16:45...Turn Off
17:45...Turn On--SSB/CW
Africa,Europe,Middle East,NA
18:30...Turn Off
19 Apr. 2010
================================
00:40...Turn On--SSB/CW
South America,NA,North Asia
01:25...Turn Off
01:31...Turn On--SSB/CW
North Asia,East Asia,South Asia
01:45...Turn Off
02:30...Turn On--SSB/CW
South America,NA,North Asia
03:15...Turn Off
19:00...Turn On--SSB/CW
Africa,Europe,NA
19:45...Turn Off
20 Apr. 2010
================================
00:20...Turn On--SSB/CW
South America,NA,North Asia
01:05...Turn Off
02:15...Turn On--SSB/CW
South America,NA,North Asia
03:00...Turn Off
03:05...Turn On--SSB/CW
North Asia, East Asia, South Asia
03:20...Turn Off
11:15...Turn On--SSB/CW
South America,Oceania,Asia
12:00...Turn Off
17:10...Turn On--SSB/CW
India,Middle East,Europe,NA
17:55...Turn Off
19:00...Turn On--SSB/CW
Africa,Europe,NA
19:45...Turn Off
21 Apr. 2010
=================================
02:48...Turn On--SSB/CW
North Asia,East Asia,South Asia
03:03...Turn Off
11:00...Turn On--SSB/CW
Oceania,East Asia,North Asia,Europe
11:45...Turn Off
13:35...Turn On--SSB/CW
NA,South America
14:20...Turn Off
18:40...Turn On--SSB/CW
Africa,Europe,NA
19:25...Turn Off
22:45...Turn On--SSB/CW
NA,North Asia,East Asia,Oceania
23:30...Turn Off
22 Apr. 2010
=================================
02:31...Turn On--SSB/CW
North Asia,East Asia,South Asia
02:47...Turn Off
06:00...Turn On--SSB/CW
NA,North Asia,Middle East,
Europe,Africa
06:45...Turn Off
10:40...Turn On--SSB/CW
Oceania,Asia,Europe,NA
11:25...Turn Off
16:35...Turn On--SSB/CW
Africa,India,Middle East,Europe,NA
17:20...Turn Off
18:25...Turn On--SSB/CW
Africa,Europe,NA
19:10...Turn Off
23 Apr. 2010
================================
00:15...Turn On--SSB/CW
South America,NA,North Asia
01:00...Turn Off
02:15...Turn On--SSB/CW
North Asia,East Asia,South Asia
02:31...Turn Off
10:25...Turn On--SSB/CW
Oceania,Asia,Europe
11:10...Turn Off
18:05...Turn On--SSB/CW
India,Africa,Europe,NA
18:50...Turn Off
22:10...Turn On--SSB/CW
NA,North Asia,Oceania
22:55...Turn Off
24 Apr. 2010
================================
01:05...Turn On--SSB/CW
South America,NA,North Asia
01:50...Turn Off
01:56...Turn On--FM
North Asia,East Asia,South Asia
02:12...Turn Off
10:05...Turn On--SSB/CW
Oceania,Asia,Europe,NA
10:50...Turn Off
17:50...Turn On--SSB/CW
Africa,Europe,NA
18:35...Turn Off
25 Apr. 2010
================================
00:45...Turn On--SSB/CW
South America,NA,North Asia
01:30...Turn Off
03:29...Turn On--FM
North Asia,East Asia,South Asia
03:42...Turn Off
06:55...Turn On--SSB/CW
North Asia,Europe,Africa
07:40...Turn Off
09:50...Turn On--SSB/CW
Oceania,Asia,Europe
10:35...Turn Off
73
Alan Kung, BA1DU
HO-68(XW-1) Project Manager
www.camsat.cn
------------------------------
Message: 11
Date: Sat, 17 Apr 2010 23:37:39 -0700 (PDT)
From: Mark Thompson <wb9qzb_groups@xxxxx.xxx>
Subject: [amsat-bb] Call for Papers--2010 ARRL/TAPR Digital
Communications Conference
To: dstar_digital@xxxxxxxxxxx.xxxx DigitalModes@xxxxxxxxxxx.xxxx
APRS@xxxxxxxxxxx.xxxx wl2kemcomm@xxxxxxxxxxx.xxxx
WINMOR@xxxxxxxxxxx.xxxx D-STAR_23cm@xxxxxxxxxxx.xxxx
PSK_VHF_UHF_HAMRADIO@xxxxxxxxxxx.xxxx soft_radio@xxxxxxxxxxx.xxxx
pactor_packet@xxxxxxxxxxx.xxxx SDRlist@xxxxxxxxxxx.xxxx
hspacket@xxxxxxxxxxx.xxxx ntms-hsmm@xxxxxxxxxxx.xxxx
amsat-bb@xxxxx.xxx
Message-ID: <243129.78726.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Call for Papers--2010 ARRL/TAPR Digital Communications Conference
Posted by: "Ford, Steve, WB8IMY" sford@xxxx.xxx wb8imy
Date: Thu Apr 15, 2010 11:12 am ((PDT))
Technical papers are solicited for presentation at the 29th Annual ARRL
and TAPR Digital Communications Conference to be held September 24-26,
2010 near Portland, Oregon. These papers will also be published in the
Conference Proceedings (you do NOT need to attend the conference to have
your paper included in the Proceedings). The submission deadline is July
31, 2010. Please send papers to:
Maty Weinberg
ARRL
225 Main St
Newington, CT 06111
or you can make your submission via e-mail to: maty@xxxx.xxx
Papers will be published exactly as submitted and authors will retain
all rights.
73 . . . Steve, WB8IMY
ARRL
------------------------------
Message: 12
Date: Sun, 18 Apr 2010 07:43:08 -0400
From: Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
Subject: [amsat-bb] Arecibo recordings
To: amsat-bb@xxxxx.xxx
Cc: eu-amsat@xxxxxxxxxxx.xxx
Message-ID: <4BCAB80C.29008.58F90FB@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=US-ASCII
Here is 2 recordings of april 17 Arecibo EME transmission received on a
linear 24 elements yagi with an Icom preamp on an FT-847 60' of LMR-
400.
http://www.yourfilelink.com/get.php?fid=541211
http://www.yourfilelink.com/get.php?fid=541210
http://www.yourfilelink.com/get.php?fid=541209
My first observation is while some seems to report great reception with
moderate set up? i cannot say my first EME reception is Q5... When
you listen the audio file put your volume up as KP4AO is way down in the
noise but after a couple of try you will be able to detect some
words from them. The CW recording is much better with the maximum of
filtering.
Conclusion:1- An LEO class satellite station does not make an EME station at
all.
2- Accurately reporting a reception by ears is not an exact
science... recording tells the truth without any doubts
3- My third file is giving some explanation about why my
JT65B program give's me 4 EME call sign: F5BUU KU7Z K3AX IQ2CJ
I will try this mode if they used it but as i does not want to be
controversial i think the 4 stations that i got on my JT65B screen where
probably never transmitting at the time of reception!!!
Just read the third file above and you will be able to understand more my
point 2!
Anyway it was my first EME SWL reception "i hope" as some just tells me it
is possible that tropo scater reflection in the caribbean and
ducting made some getting the Arecibo signal this way as their EIRP made it
quite possible explaining the rapid QSB reported by some
station. Here as soon as i move the antenna off by 10 deg Arecibo disappear.
Just to pointed out i was listening the HAARP EME test 2 years ago and i was
able to copy their HF ionospheric signal and their moon
reflected signal much much weaker but some on the world where only able to
get the moon reflected signal as they where out of range form
the standard HF propagation path. Just to warned those in the tropo
scatter/RF ducting path from Arecibo to checked if moving their antenna
off the moon make the signal disappear.
P.S. If someone is aware of an audio software able to filtered out the noise
from a recording just pointed me toward the source.
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. 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 5, Issue 175
****************************************
Read previous mail | Read next mail
| |
