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CX2SA > SATDIG 29.06.10 07:29l 892 Lines 28043 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Pass prediction algorithm (kim)
2. Re: Pass prediction algorithm (Douglas Quagliana)
3. field day (Bob- W7LRD)
4. Re: Pass prediction algorithm (Robert Bruninga)
5. SO-67 status (Andrew Glasbrenner)
6. Re: field day (davekn4ok@xxx.xxxx
7. Re: field day (Andrew Koenig)
8. Re: field day (Vince Fiscus, KB7ADL)
9. Re: [sarex] Ariss casual phone contacts (Vince Fiscus, KB7ADL)
10. Cubex antennas- any feedback? (John Heath)
11. Re: Cubex antennas- any feedback? (Rocky Jones)
12. DN35, DN36, DN37 (KERRY LA*DUKE)
13. Re: field day (Joe)
14. Re: field day (George Henry)
15. US Space Policy - Export Restrictions (Trevor .)
16. Field Day Results (Bruce)
17. Re: HF Satellite Relay (Greg D.)
18. Re: field day (Andy MacAllister)
----------------------------------------------------------------------
Message: 1
Date: Mon, 28 Jun 2010 12:05:28 -0700
From: kim <ac7yy@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Pass prediction algorithm
To: amsat-bb@xxxxx.xxx
Message-ID: <1277751928.19446.12.camel@xxxxxxxxxxx>
Content-Type: text/plain; charset="UTF-8"
On Mon, 2010-06-28 at 10:26 -0700, B J wrote:
>
> --- On Mon, 6/28/10, Reid Crowe <reid.crowe@xxxxx.xxx> wrote:
>
> > From: Reid Crowe <reid.crowe@xxxxx.xxx>
> > Subject: [amsat-bb] Pass prediction algorithm
> > To: amsat-bb@xxxxx.xxx
> > Received: Monday, June 28, 2010, 8:59 AM
> > I'm trying to write my own pass
> > prediction program for tracking FM
> > satellites. This program will this notify the users
> > of upcoming passes
> > via APRS messaging. I would like to find an algorithm
> > that will predict
> > AOS/LOS time and azimuth and the maximum
> > elevation. I'm also hoping
> > this algorithm will not be too computationally intensive as
> > it may
> > possibly be used for hundreds of different station
> > locations.
> >
> > Can anyone help?
>
I would suggest you look at the digi_ned source code. It works great and
does everything you want. There was a change on the last update where he
replace the display of azimuth/elevation to HIGH(over 30 degrees) and
LOW (Below 30 degrees). That change actually works very well when
driving down the road. But it was nice to see the actually numbers when
sitting still. The code before this last update did that.
73
kim - ac7yy
------------------------------
Message: 2
Date: Mon, 28 Jun 2010 14:08:14 -0500
From: Douglas Quagliana <dquagliana@xxx.xxx>
Subject: [amsat-bb] Re: Pass prediction algorithm
To: Reid Crowe <reid.crowe@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4C28F31E.2090509@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Reid Crowe wrote:
> I'm trying to write my own pass prediction program for tracking FM
> satellites.
> 73, Reid N0RC
>
Hi Reid,
If you want something in C, try predict. If BASIC is more to your
liking, then try G3RUH's plan13 program.
Both come with source code. Predict is GPL. Plan13 comes with G3RUH's
writeup, which includes an
excellent explanation of what the program does and how it does it.
predict is at
http://www.qsl.net/kd2bd/predict.html
plan13 is at
http://www.amsat.org/amsat/articles/g3ruh/111.html
Both will run on computers with minimal CPU resources.
Douglas KA2UPW/5
------------------------------
Message: 3
Date: Mon, 28 Jun 2010 20:16:16 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Subject: [amsat-bb] field day
To: amsat-bb@xxxxx.xxx
Message-ID:
<441211173.29490.1277756176890.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxxxx
x.xxx>
Content-Type: text/plain; charset=utf-8
Had an absolute blast on field day.? AO-7 sounded like a 20M pile up
<grin>.? Even the S band operation on AO-51 was busy.? With so many stations
on the satellites should we not have more AMSAT members?? Defined as more
dues paying and contributing members.? This is rocket science and as I been
preaching, "this is rocket science and that ain't cheap".
73 Bob W7LRD
------------------------------
Message: 4
Date: Mon, 28 Jun 2010 16:27:18 -0400
From: "Robert Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] Re: Pass prediction algorithm
To: "'kim'" <ac7yy@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <97DCAD679D454FB4B798C1FD793D02D7@xxxxx.xxxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
>>> ... This program will this notify the users
>>> of upcoming passes via APRS messaging.
Better to use OBJECTS so that all of the following shows up on
the front panel of the radio:
Satellite Name
Direction, and Range
Uplink Freq (and doppler)
Downlink Freq and Doppler
Elevation (HIGH or LOW).
Direction of movement
> I would suggest you look at the digi_ned source code.
> It works great and does everything you want.
> [that is, sending out all the Satellite Objects info
> on APRS shown above]
>
> There was a change on the last update where he
> replace the display of azimuth/elevation to
> HIGH(over 30 degrees) and LOW (Below 30 degrees).
> That change actually works very well when
> driving down the road.
And if it is like the original APRSdata.EXE, those are encoded
with a leading % sign so that the D700 radio with a voice chip
will actually SPEAK "HIGH" and "LOW" so you never even have to
look at the radio.
For example, you are just driving down the road, and your D700
(with voice chip)announces: "AO-51 435.300 -5 KHz 145.85 +1 KHz
HIGH"
And if you look at the radio, it displays all the other info
above.
This is just part of the local INFO that can be pushed to the
front panel of the APRS radios as a service to the mobile
operator. I'm glad you are taking on this challenge, because,
no one uses the original APRSdata.EXE that did this, there are
very few DIGI-NED's on the air doing it, and so we need a
Windows version that each local area can run to serve their
users.
Bob, WB4APR
------------------------------
Message: 5
Date: Mon, 28 Jun 2010 16:33:43 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] SO-67 status
To: Amsat-BB <amsat-bb@xxxxx.xxx>
Message-ID: <4C290727.7050403@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Forwarded from the Sumbandila team:
Hi guys,
I'm sorry to inform you that we couldn't upload any schedules this
evening. The On Board Computer was off at the beginning of the pass. SO
I had to switch it on and try to stabilize the satellite. I'll keep on
monitoring the satellite state tomorrow, and will resume with the Amsats
once everything is in order.
My apologies for any inconvenience caused.
------------------------------
Message: 6
Date: Mon, 28 Jun 2010 16:59:09 -0400
From: davekn4ok@xxx.xxx
Subject: [amsat-bb] Re: field day
To: amsat-bb@xxxxx.xxx
Message-ID: <8CCE51BE369CF72-20A8-1239@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
We had a Blast also during FD! I was one of the ops from our club station
(K4BFT Big Fat Turkey) and worked many of you. I think AO-51 sounded more
like ch 19! LOL LOL
Dave, kn4ok
-----Original Message-----
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Mon, Jun 28, 2010 3:16 pm
Subject: [amsat-bb] field day
Had an absolute blast on field day. AO-7 sounded like a 20M pile up <grin>.
ven the S band operation on AO-51 was busy. With so many stations on the
atellites should we not have more AMSAT members? Defined as more dues paying
nd contributing members. This is rocket science and as I been preaching,
"this
s rocket science and that ain't cheap".
73 Bob W7LRD
______________________________________________
ent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
ot an AMSAT-NA member? Join now to support the amateur satellite program!
ubscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Mon, 28 Jun 2010 17:05:35 -0500
From: Andrew Koenig <andrewkoenig@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: field day
To: davekn4ok@xxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<AANLkTinmH6G4POxz_4bUDtJmNMCEj5utvxXHjIIyL6ZU@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Field day was quite amazing down here in Houston too. I was one of the
operators for K5HOU. I had never heard SO-50 with so many people! I tried 3
passes, 2 of which were on SO-50, and we didn't make a single contact, but
we still had a ton of fun trying.
On Mon, Jun 28, 2010 at 3:59 PM, <davekn4ok@xxx.xxx> wrote:
>
> We had a Blast also during FD! I was one of the ops from our club station
> (K4BFT Big Fat Turkey) and worked many of you. I think AO-51 sounded more
> like ch 19! LOL LOL
>
> Dave, kn4ok
>
>
>
>
>
>
>
> -----Original Message-----
> From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Sent: Mon, Jun 28, 2010 3:16 pm
> Subject: [amsat-bb] field day
>
>
>
> Had an absolute blast on field day. AO-7 sounded like a 20M pile up
> <grin>.
> ven the S band operation on AO-51 was busy. With so many stations on the
> atellites should we not have more AMSAT members? Defined as more dues
> paying
> nd contributing members. This is rocket science and as I been preaching,
> "this
> s rocket science and that ain't cheap".
> 73 Bob W7LRD
> ______________________________________________
> ent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> ot an AMSAT-NA member? Join now to support the amateur satellite program!
> ubscription 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
>
--
Andrew Koenig
------------------------------
Message: 8
Date: Mon, 28 Jun 2010 17:12:25 -0600
From: "Vince Fiscus, KB7ADL" <vlfiscus@xxx.xxx>
Subject: [amsat-bb] Re: field day
To: amsat-bb@xxxxx.xxx
Message-ID: <5.2.1.1.2.20100628165643.00bd31f8@xxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 04:59 PM 6/28/2010 -0400, davekn4ok@xxx.xxx wrote:
>We had a Blast also during FD! I was one of the ops from our club station
>(K4BFT Big Fat Turkey) and worked many of you. I think AO-51 sounded more
>like ch 19! LOL LOL
No.
It's an FM satellite, they're always supposed to sound like that. ROFL
I hate to admit it, but the linear mode LEO's sounded a bit like that too
this weekend. I was going to make a few more calls than I did, but it
would have just added to the congestion.
KB7ADL
------------------------------
Message: 9
Date: Mon, 28 Jun 2010 17:20:18 -0600
From: "Vince Fiscus, KB7ADL" <vlfiscus@xxx.xxx>
Subject: [amsat-bb] Re: [sarex] Ariss casual phone contacts
To: amsat-bb@xxxxx.xxx
Message-ID: <5.2.1.1.2.20100628171340.00bd4698@xxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 08:27 PM 6/26/2010 -0700, patrick@xxxxxx.xxx wrote:
>How about letting us know why there are no casual contacts anymore and
>only rehearsed and choreographed public shows.
>I read many times about how busy the astronauts are but it is glaringly
>apparent they have no interest or are refraining from unrehearsed
>contacts.
>They could at least turn on the cross band repeater. The navy had enough
>control over the amateur radio with the packet.
>Frankly, I am personally no longer interested in talking to the astronauts
>but the repeater was a lot of fun.
>Someone please make it happen.
>
>A mere citizen
>
>pat
I was thinking about this, and you know I've never have made a contact with
anyone the ISS. There were a few times I could have fired up the mfj-1278
and done some digi, but even that hasn't been turned on much.
I didn't monitor to see if they were on for FD.
KB7ADL
------------------------------
Message: 10
Date: Mon, 28 Jun 2010 22:18:53 +0000 (GMT)
From: John Heath <g7hia@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Cubex antennas- any feedback?
To: Amsat <amsat-bb@xxxxx.xxx>
Message-ID: <198923.26062.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Hi,
Just moved to a new QTH in southern england and considering new satellite
antennas.
The Cubex 2 and 70 dual band quad "Yellow-Jacket 46" looks interesting at
www.cubex.com
Anyone using this antenna on satellites?
Any problems with desense with the two antennas on the same boom?
Feedback welcome
73 John G7HIA? on IO80JE
------------------------------
Message: 11
Date: Mon, 28 Jun 2010 18:34:37 -0500
From: Rocky Jones <orbitjet@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Cubex antennas- any feedback?
To: <g7hia@xxxxxxxxxx.xxx>, Amsat BB <amsat-bb@xxxxx.xxx>
Message-ID: <COL106-W30F623632C5F5B347AFBE2D6CA0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Not used them on the birds (yet) but the club uses them as "links"to some of
our remote APRS and receiver sites and they work great. We have used them
both ways (transmit on one band and RX on the other) ...we had to put a
filter on one 2 meter receive link but that had more to do with a business
band system honking away at lots of watts then desense from the 70cm. Well
built, they lasted unscathed through Ike.
Robert Oler WB5MZO life member ARRL AMSAT
> Date: Mon, 28 Jun 2010 22:18:53 +0000
> From: g7hia@xxxxxxxxxx.xxx
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Cubex antennas- any feedback?
>
> Hi,
>
> Just moved to a new QTH in southern england and considering new satellite
antennas.
> The Cubex 2 and 70 dual band quad "Yellow-Jacket 46" looks interesting at
www.cubex.com
>
> Anyone using this antenna on satellites?
>
> Any problems with desense with the two antennas on the same boom?
>
> Feedback welcome
>
>
> 73 John G7HIA on IO80JE
> _______________________________________________
> 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:
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------------------------------
Message: 12
Date: Mon, 28 Jun 2010 18:29:52 -0600
From: KERRY LA*DUKE <kladuke1144@xxx.xxx>
Subject: [amsat-bb] DN35, DN36, DN37
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>, john geach
<jcgeach@xxxxx.xxx>, john <k6yk@xxxxx.xxx>, <xe2at@xxxxxxx.xxx>
Message-ID: <COL117-W55CC86583653AA271F6266BCCB0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
All,
My plan is to operate from DN35 starting about 1245Z on 6/29/2010. I
will be in DN36 around 1800Z and DN37 around 2000Z. I may be able to
operate from grid boundries for some passes. I will be active on SO50,
AO51, SO67 if available and AO27.
73
WC7V
Kerry
_________________________________________________________________
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:
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------------------------------
Message: 13
Date: Mon, 28 Jun 2010 20:04:44 -0500
From: Joe <nss@xxx.xxx>
Subject: [amsat-bb] Re: field day
To: amsat-bb@xxxxx.xxx
Message-ID: <4C2946AC.9050900@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I remember working ya on HF someplace. we were
wb9fdz Field Day Zombies
Joe WB9SBD
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 6/28/2010 3:59 PM, davekn4ok@xxx.xxx wrote:
> We had a Blast also during FD! I was one of the ops from our club station
(K4BFT Big Fat Turkey) and worked many of you. I think AO-51 sounded more
like ch 19! LOL LOL
>
> Dave, kn4ok
>
>
>
>
>
>
>
> -----Original Message-----
> From: Bob- W7LRD<w7lrd@xxxxxxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Sent: Mon, Jun 28, 2010 3:16 pm
> Subject: [amsat-bb] field day
>
>
>
> Had an absolute blast on field day. AO-7 sounded like a 20M pile up<grin>.
> ven the S band operation on AO-51 was busy. With so many stations on the
> atellites should we not have more AMSAT members? Defined as more dues
paying
> nd contributing members. This is rocket science and as I been preaching,
"this
> s rocket science and that ain't cheap".
> 73 Bob W7LRD
> ______________________________________________
> ent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> ot an AMSAT-NA member? Join now to support the amateur satellite program!
> ubscription 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
>
>
>
------------------------------
Message: 14
Date: Mon, 28 Jun 2010 21:32:47 -0500
From: "George Henry" <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: field day
To: "amsat bb" <amsat-bb@xxxxx.xxx>
Message-ID: <EC3A7E81039B4BABBC384CF851C886A1@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
We managed 21 contacts in all... one on each FM bird and the remainder on
the linear sats. And all in spite of several visits from Mr. Murphy and his
extended family:
We ran N3FJP network logging for the first time, with MS NetMeeting as a
chat client, and either one of them was conflicting with SatPC32, or my poor
old Dell Inspiron 8100 laptop was just not up to the task. Every so often
when I changed satellites, or changed CAT selections for a given satellite,
SatPC32 would throw an access violation error. Seemed to keep working okay,
though. Then I had an issue where the radio kept coming up in "Normal"
tracking mode, even when it should have be in "Reverse" tracking mode,
followed by 3 "serious error" blue screen reboots. My rotor has a bad spot
on the azimuth position pot, so every once in a while, it would go zooming
off target and I'd have to go manual; the mic boom broke off my headphones,
and of course, it wouldn't be Field Day in Chicagoland without severe
thunderstorms rolling thru at some point (Sunday morning - took us off the
air for about an hour and a half).
I was very impressed at how well AO-7 held up under the abuse she was
subjected to. There were a couple of stations that had the poor old girl
FM'ing so bad you couldn't even understand them, and one CW station that
chirped so bad I swear they were keying an FM rig on the uplink! AO-51 V/S
was a treat, and some observers couldn't believe how strong the downlink was
with just a corner reflector on the K5GNA downconverter. Nice to have SO-67
back, too!
George, KA3HSW
(Satellite op for W9CCU, 5A, IL)
----- Original Message -----
From: "Andrew Koenig" <andrewkoenig@xxxxxxxxxx.xxx>
To: <davekn4ok@xxx.xxx>
Cc: <amsat-bb@xxxxx.xxx>
Sent: Monday, June 28, 2010 5:05 PM
Subject: [amsat-bb] Re: field day
> Field day was quite amazing down here in Houston too. I was one of the
> operators for K5HOU. I had never heard SO-50 with so many people! I tried
> 3
> passes, 2 of which were on SO-50, and we didn't make a single contact, but
> we still had a ton of fun trying.
>
> On Mon, Jun 28, 2010 at 3:59 PM, <davekn4ok@xxx.xxx> wrote:
>
>>
>> We had a Blast also during FD! I was one of the ops from our club
>> station
>> (K4BFT Big Fat Turkey) and worked many of you. I think AO-51 sounded
>> more
>> like ch 19! LOL LOL
>>
>> Dave, kn4ok
------------------------------
Message: 15
Date: Tue, 29 Jun 2010 03:08:52 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
Subject: [amsat-bb] US Space Policy - Export Restrictions
To: amsat-bb@xxxxx.xxx
Message-ID: <340063.3147.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Do I detect a very slight loosening of the Export Restrictions with regard
to Space in the new policy released Monday. Compare below with "12 Effective
Export Policy" in the 2006 version.
National Space Policy of the United States of America
http://www.whitehouse.gov/sites/default/files/national_space_policy_6-28-10.pd
f
Effective Export Policies
Consistent with the U.S. export control review, departments and agencies
should seek to enhance the competitiveness of the U.S. space industrial base
while also addressing national security needs.
The United States will work to stem the flow of advanced space technology to
unauthorized parties. Departments and agencies are responsible for
protecting against adverse technology transfer in the conduct of their
programs.
The United States Government will consider the issuance of licenses for
space-related exports on a case-by-case basis, pursuant to, and in
accordance with, the International Traffic in Arms Regulations, the Export
Administration Regulations, and other applicable laws, treaties, and
regulations. Consistent with the foregoing space-related items that are
determined to be generally available in the global marketplace shall be
considered favorably with a view that such exports are usually in the
national interests of the United States.
Sensitive or advanced spacecraft-related exports may require a
government-to-government agreement or other acceptable arrangement.
2006 US Space Policy
http://www.fas.org/irp/offdocs/nspd/space.pdf
1996 US Space Policy
http://www.fas.org/spp/military/docops/national/nstc-8.htm???
----
73 Trevor M5AKA
Daily Amateur Radio Email/RSS News: http://www.southgatearc.org/
Email Your News To: editor at southgatearc.org
Or Upload Using Form At: http://www.southgatearc.org/news/your_news_1.htm
----
------------------------------
Message: 16
Date: Mon, 28 Jun 2010 22:08:59 -0500
From: Bruce <kk5do@xxxx.xxx>
Subject: [amsat-bb] Field Day Results
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Message-ID: <4C2963CB.8030302@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I would like to remind everyone that participated in Field Day that you
need to email your results to me. Per the rules....
The Satellite Summary Sheet should be used for submission of the AMSAT
Field Day competition and be received by KK5DO (email or postal mail) by
11:59 P.M. CDT, Monday, July 12, 2010. The preferred method for
submitting your log is via e-mail to kk5do@xxxxx.xxx or kk5do@xxxx.xxx.
You will receive an email back (within one or two days) from me when I
receive your email submission. If you do not receive a confirmation
message, then I have not received your submission. Try sending it again
or send it to my other email address.
Good Luck
73...bruce
--
Bruce Paige, KK5DO
AMSAT Director Contests and Awards
ARRL Awards Manager (WAS, 5BWAS, VUCC), VE
Houston AMSAT Net - Wed 0100z on Echolink - Conference *AMSAT*
Also live streaming MP3 at http://www.amsatnet.com
Podcast at http://www.amsatnet.com/podcast.xml or iTunes
Latest satellite news on the ARRL Audio News
http://www.arrl.org
AMSAT on Twitter http://www.twitter.com/amsat
------------------------------
Message: 17
Date: Mon, 28 Jun 2010 22:03:17 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: HF Satellite Relay
To: <bruninga@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W29E642D01D39DA49049D3BA9CB0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Well, it's finally happened. We've come full circle. They've reinvented
Echo-1.
http://en.wikipedia.org/wiki/Project_Echo
Of course, that one was 10x larger. What makes this a 10m (band) operation?
I expect it would work on the higher bands too, especially with the smaller
size. What band did they use ~50-ish years ago?
Greg KO6TH
> From: bruninga@xxxx.xxx
> To: amsat-bb@xxxxx.xxx
Cancel
> Date: Mon, 28 Jun 2010 13:44:45 -0400
> Subject: [amsat-bb] HF Satellite Relay
>
> Heard today of a Passive HF relay satellite being proposed.
> Wondered if Hams could relay off of it.
>
> It's a 10m diameter sphere.
> I assumed a 10m signal and 1000 Watts
> And antenna gains at both ends of 10 dB.
> Unless I made a dumb error, it looks impossible?
> I get a received signal of -170 dBm
> Compared to a good HF receiver of -122 dBm
> So its 48 dB down in the noise.
> Going to narrow band, could improve things, but the Doppler of
> +/- 600 Hz would make that difficult.
>
> Anyway, if someone else wants to double check the link budget
> using the radar range equation, go for it.
>
> The beauty of this system is that it is perfectly spherical, so
> the reflection coefficient would be constant within 1 dB. That
> is the advantage over trying to use the ISS or other large
> rocket body... They vary by 20 dB making communication by
> reflection impossible.
>
> Oh, and it would be in space for 30 years or more. So with
> something that reliable, it would be worth developing an amateur
> capability to use it.
> It is not designed for comms, but as a calibration sphere for
> over the horizon radars that have LOTS more power and LOTS more
> gain than we do.
>
> Bob, Wb4APR
>
>
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Message: 18
Date: Tue, 29 Jun 2010 00:11:44 -0500
From: "Andy MacAllister" <w5acm@xxxxxx.xxx>
Subject: [amsat-bb] Re: field day
To: "'AMSAT BBS'" <amsat-bb@xxxxx.xxx>
Message-ID: <5B4F874661674AB48B3BF3C74F2DB782@xxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Everything worked right this year for the Houston MosQRPitos, operating as
W5MSQ near Brookshire, Texas. We were set up for all possible satellite
configurations including Mode S down via AO-51, but I slept through both
passes! However, it was great to find AO-7 and FO-29 in good shape and
fantastic ops via HO-68. It may have only been one pass at the end of the
event, but it was a GOOD one. Thanks to all for the many satellite QSO's. Be
sure and send in your scores!
73 de Andy W5ACM (AMSAT Life Member) for W5MSQ
----- Original Message -----
From: "Joe" <nss@xxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Monday, June 28, 2010 8:04 PM
Subject: [amsat-bb] Re: field day
>I remember working ya on HF someplace. we were
> wb9fdz Field Day Zombies
> Joe WB9SBD
>
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
>
> On 6/28/2010 3:59 PM, davekn4ok@xxx.xxx wrote:
> We had a Blast also during FD! I was one of the ops from our club station
> (K4BFT Big Fat Turkey) and worked many of you.
I think AO-51 sounded more like ch 19! LOL LOL
>
> Dave, kn4ok
>
> -----Original Message-----
> From: Bob- W7LRD<w7lrd@xxxxxxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Sent: Mon, Jun 28, 2010 3:16 pm
> Subject: [amsat-bb] field day
>
> Had an absolute blast on field day. AO-7 sounded like a 20M pile
> up<grin>.
> ven the S band operation on AO-51 was busy. With so many stations on the
> atellites should we not have more AMSAT members? Defined as more dues
> paying
> nd contributing members. This is rocket science and as I been preaching,
> "this
> s rocket science and that ain't cheap".
> 73 Bob W7LRD
------------------------------
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Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
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End of AMSAT-BB Digest, Vol 5, Issue 283
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