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CX2SA > SATDIG 20.01.11 22:08l 727 Lines 25452 Bytes #999 (0) @ WW
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Sent: 110120/2004Z @:CX2SA.LAV.URY.SA #:46577 [Minas] FBB7.00e $:AMSATBB637
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: AO51 2148z Recording? (Zachary Beougher)
2. Re: Nanosail-D (what are we listening for???) (Wouter Weggelaar)
3. Re: Nanosail-D (what are we listening for???) (Dave Webb KB1PVH)
4. Re: "Citizen Satellites" in February Scientific American (Dee)
5. Historical Software (Martha)
6. Re: "Citizen Satellites" in February Scientific American
(Jim Jerzycke)
7. ARISSat-1 article (David H. Jordan)
8. FW: Re: em40 needed (Angelo Glorioso)
9. Re: finding yourself in the passband of an analog satellite
(na2x@xxxxx.xxxx
10. Re: finding yourself in the passband of an analog satellite
(Mark L. Hammond)
----------------------------------------------------------------------
Message: 1
Date: Thu, 20 Jan 2011 10:14:30 -0500
From: "Zachary Beougher" <zack.kd8ksn@xxxxxxx.xxx>
Subject: [amsat-bb] Re: AO51 2148z Recording?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <SNT111-DS686B11CE1511366526EC0B3F90@xxx.xxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I think I found the N3 station - he just sent an email to the AMSAT BB.
N3YKF: I am sending you a separate email off list.
Zack
KD8KSN
-----Original Message-----
From: Zachary Beougher
Sent: Thursday, January 20, 2011 9:50 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] AO51 2148z Recording?
Hi All,
Does anyone happen to have the 2148z AO51 recording from yesterday (1/19)?
My recorder failed, or I forgot to hit the record button.
I know I worked AJ5C in EM36, KJ4OHL in EM83 (I think), and there was also a
N3??? /p station in FN11?. If someone could just give me the call sign of
the N3 portable station, I can piece the rest together.
73!
Zack
KD8KSN
_______________________________________________
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: 2
Date: Thu, 20 Jan 2011 16:27:37 +0100
From: Wouter Weggelaar <wouterweg@xxxxx.xxx>
Subject: [amsat-bb] Re: Nanosail-D (what are we listening for???)
To: Bob Bruninga <bruninga@xxxx.xxx>
Cc: amsat <amsat-bb@xxxxx.xxx>
Message-ID:
<AANLkTikFoL4oOtpyOzYR=zhjMn1rmsQtJg3nSTKdeS0a@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi All,
I've just tracked a pass over Delft (PA-land) of nanosail-d
Sounds like ordinary 1200BPS AFSK to me.
Tomorrow I will have a TNC connected in monitor mode + maybe the TH-D7.
I've used the tracking yagi's of the ISIS ground station.
I expect the beacon to be UI frames. Their website does not say so on
the front page.
However, they have hidden a PDF away on the data submission page.
Direct link:
http://beacon.engr.scu.edu/BeaconProcessingSystem/NanoSailDBeaconDecoding.pdf
Additionally, Bob is right, there is NO bitrade or modulation type in
this document.
73s
Wouter Weggelaar
PA3WEG
On Thu, Jan 20, 2011 at 12:12 AM, Bob Bruninga <bruninga@xxxx.xxx> wrote:
> Would someone pass back to the FASTSAT and NANOSAT folks that they should
> tell us what we are listening for? ?AX.25? ?1200 baud, 9600 baud? CW? ?What
> are we listening for?
>
> I just had an overhead pass, but by the time I went through all their web
> pages and links, I found NOTHING useful. ?By the time I gave up, and got
> back to the radio, I really missed the whole pass.
>
> Bob, Wb4APR
>
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of Dave Taylor
> Sent: Wednesday, January 19, 2011 4:24 PM
> To: amsat
> Subject: [amsat-bb] Fwd: NanoSail-D Ejects; NASA Seeks Amateur Radio
> Operators' Aid to Listen for Beacon Signal
>
> For those interested...
>
> -- Dave, W8AAS
>
>
>>
>> -----Original Message-----
>>
>> RELEASE: 11-009
>>
>> NANOSAIL-D EJECTS; NASA SEEKS AMATUER RADIO OPERATORS' AID TO LISTEN
>> FOR
>> BEACON SIGNAL
>>
>> HUNTSVILLE, Ala. - Wednesday, Jan. 19 at 11:30 a.m. EST, engineers at
>> Marshall Space Flight Center in Huntsville, Ala., confirmed that the
>> NanoSail-D nanosatellite ejected from Fast Affordable Scientific and
>> Technology Satellite, FASTSAT. The ejection event occurred
>> spontaneously
>> and was identified this morning when engineers at the center analyzed
>> onboard FASTSAT telemetry. The ejection of NanoSail-D also has been
>> confirmed by ground-based satellite tracking assets.
>>
>> Amateur ham operators are asked to listen for the signal to verify
>> NanoSail-D is operating. This information should be sent to the
>> NanoSail-D dashboard at: http://nanosaild.engr.scu.edu/dashboard.htm.
>> The NanoSail-D beacon signal can be found at 437.270 MHz.
>>
>> The NanoSail-D science team is hopeful the nanosatellite is healthy
>> and
>> can complete its solar sail mission. After ejection, a timer within
>> NanoSail-D begins a three-day countdown as the satellite orbits the
>> Earth. Once the timer reaches zero, four booms will quickly deploy and
>> the NanoSail-D sail will start to unfold to a 100-square-foot polymer
>> sail. Within five seconds the sail fully unfurls.
>>
>> "This is great news for our team. We're anxious to hear the beacon
>> which
>> tells us that NanoSail-D is healthy and operating as planned," said
>> Dean
>> Alhorn, NanoSail-D principal investigator and aerospace engineer at
>> the
>> Marshall Center. "The science team is hopeful to see that NanoSail-D
>> is
>> operational and will be able to unfurl its solar sail."
>>
>> On Dec. 6,, 2010, NASA triggered the planned ejection of NanoSail-D
>> from
>> FASTSAT. At that time, the team confirmed that the door successfully
>> opened and data indicated a successful ejection. Upon further
>> analysis,
>> no evidence of NanoSail-D was identified in low-Earth orbit, leading
>> the
>> team to believe NanoSail-D remained inside FASTSAT.
>>
>> The FASTSAT mission has continued to operate as planned with the five
>> other scientific experiments operating nominally.
>>
>> "We knew that the door opened and it was possible that NanoSail-D
>> could
>> eject on its own," said Mark Boudreaux, FASTSAT project manager at the
>> Marshall Center. "What a pleasant surprise this morning when our
>> flight
>> operations team confirmed that NanoSail-D is now a free flyer."
>> If the deployment is successful, NanoSail-D will stay in low-Earth
>> orbit
>> between 70 and 120 days, depending on atmospheric conditions.
>> NanoSail-D
>> is designed to demonstrate deployment of a compact solar sail boom
>> system that could lead to further development of this alternative
>> solar
>> sail propulsion technology and FASTSAT's ability to eject a
>> nano-satellite from a micro-satellite - while avoiding re-contact with
>> the FASTSAT satellite bus.
>>
>> Follow the NanoSail-D mission operation on Twitter at:
>> http://twitter.com/nanosaild
>>
>> For additional information on the timeline of the NanoSail-D
>> deployment
>> visit:
>> http://www.nasa.gov/pdf/501204main_NSD2_timeline_sequence.pdf
>>
>> To learn more about FASTSAT and the NanoSail-D missions visit:
>> http://www.nasa.gov/mission_pages/smallsats
>>
>> -end-
>>
>> News release
>> http://www.nasa.gov/centers/marshall/news/news/releases/2011/11-009.html
>>
>>
>> For releases sent directly to you, contact: betty.humphery@xxxx.xxx.
>>
>> Marshall Space Flight Center
>> Public Affairs Department
>> 256-544-0034
>> 256-544-5852 (fax)
>> http://www.nasa.gov/centers/marshall/news
>>
>> Follow Marshall news and interact with the NASA Marshall community on
>> Facebook, Twitter and Flickr:
>>
>> http://www.facebook.com/nasamarshallcenter
>> http://twitter.com/NASA_Marshall
>> http://www.flickr.com/photos/28634332@xxxxxxxx
>>
>
> _______________________________________________
> 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
>
------------------------------
Message: 3
Date: Thu, 20 Jan 2011 10:46:15 -0500
From: Dave Webb KB1PVH <kb1pvh@xxxxx.xxx>
Subject: [amsat-bb] Re: Nanosail-D (what are we listening for???)
To: Wouter Weggelaar <wouterweg@xxxxx.xxx>
Cc: amsat <amsat-bb@xxxxx.xxx>
Message-ID:
<AANLkTim6C2zPKKKn9_Wr+UB=ihjY8+TPP4+T2t=6kC7e@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
These are the only two I could get last night.
Fm KE7EGC To UNDEF Via TELEM <UI pid=F0 Len=64 >[22:55:45]
NanoSailD.org 8C0F0000A21400000004008A890200004939C37ACFC0000000
Fm KE7EGC To UNDEF Via TELEM <UI pid=F0 Len=64 >[22:55:56]
NanoSailD.org 8C0F0000A31400000004008A880200004939C37ACFC0000000
Dave - KB1PVH
Sent from my Verizon Wireless DROID X
On Jan 20, 2011 10:39 AM, "Wouter Weggelaar" <wouterweg@xxxxx.xxx> wrote:
> Hi All,
>
> I've just tracked a pass over Delft (PA-land) of nanosail-d
> Sounds like ordinary 1200BPS AFSK to me.
> Tomorrow I will have a TNC connected in monitor mode + maybe the TH-D7.
> I've used the tracking yagi's of the ISIS ground station.
>
> I expect the beacon to be UI frames. Their website does not say so on
> the front page.
> However, they have hidden a PDF away on the data submission page.
> Direct link:
http://beacon.engr.scu.edu/BeaconProcessingSystem/NanoSailDBeaconDecoding.pdf
> Additionally, Bob is right, there is NO bitrade or modulation type in
> this document.
>
> 73s
>
> Wouter Weggelaar
> PA3WEG
>
>
>
> On Thu, Jan 20, 2011 at 12:12 AM, Bob Bruninga <bruninga@xxxx.xxx> wrote:
>> Would someone pass back to the FASTSAT and NANOSAT folks that they should
>> tell us what we are listening for? AX.25? 1200 baud, 9600 baud? CW?
What
>> are we listening for?
>>
>> I just had an overhead pass, but by the time I went through all their web
>> pages and links, I found NOTHING useful. By the time I gave up, and got
>> back to the radio, I really missed the whole pass.
>>
>> Bob, Wb4APR
>>
>>
>> -----Original Message-----
>> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
>> Behalf Of Dave Taylor
>> Sent: Wednesday, January 19, 2011 4:24 PM
>> To: amsat
>> Subject: [amsat-bb] Fwd: NanoSail-D Ejects; NASA Seeks Amateur Radio
>> Operators' Aid to Listen for Beacon Signal
>>
>> For those interested...
>>
>> -- Dave, W8AAS
>>
>>
>>>
>>> -----Original Message-----
>>>
>>> RELEASE: 11-009
>>>
>>> NANOSAIL-D EJECTS; NASA SEEKS AMATUER RADIO OPERATORS' AID TO LISTEN
>>> FOR
>>> BEACON SIGNAL
>>>
>>> HUNTSVILLE, Ala. - Wednesday, Jan. 19 at 11:30 a.m. EST, engineers at
>>> Marshall Space Flight Center in Huntsville, Ala., confirmed that the
>>> NanoSail-D nanosatellite ejected from Fast Affordable Scientific and
>>> Technology Satellite, FASTSAT. The ejection event occurred
>>> spontaneously
>>> and was identified this morning when engineers at the center analyzed
>>> onboard FASTSAT telemetry. The ejection of NanoSail-D also has been
>>> confirmed by ground-based satellite tracking assets.
>>>
>>> Amateur ham operators are asked to listen for the signal to verify
>>> NanoSail-D is operating. This information should be sent to the
>>> NanoSail-D dashboard at: http://nanosaild.engr.scu.edu/dashboard.htm.
>>> The NanoSail-D beacon signal can be found at 437.270 MHz.
>>>
>>> The NanoSail-D science team is hopeful the nanosatellite is healthy
>>> and
>>> can complete its solar sail mission. After ejection, a timer within
>>> NanoSail-D begins a three-day countdown as the satellite orbits the
>>> Earth. Once the timer reaches zero, four booms will quickly deploy and
>>> the NanoSail-D sail will start to unfold to a 100-square-foot polymer
>>> sail. Within five seconds the sail fully unfurls.
>>>
>>> "This is great news for our team. We're anxious to hear the beacon
>>> which
>>> tells us that NanoSail-D is healthy and operating as planned," said
>>> Dean
>>> Alhorn, NanoSail-D principal investigator and aerospace engineer at
>>> the
>>> Marshall Center. "The science team is hopeful to see that NanoSail-D
>>> is
>>> operational and will be able to unfurl its solar sail."
>>>
>>> On Dec. 6,, 2010, NASA triggered the planned ejection of NanoSail-D
>>> from
>>> FASTSAT. At that time, the team confirmed that the door successfully
>>> opened and data indicated a successful ejection. Upon further
>>> analysis,
>>> no evidence of NanoSail-D was identified in low-Earth orbit, leading
>>> the
>>> team to believe NanoSail-D remained inside FASTSAT.
>>>
>>> The FASTSAT mission has continued to operate as planned with the five
>>> other scientific experiments operating nominally.
>>>
>>> "We knew that the door opened and it was possible that NanoSail-D
>>> could
>>> eject on its own," said Mark Boudreaux, FASTSAT project manager at the
>>> Marshall Center. "What a pleasant surprise this morning when our
>>> flight
>>> operations team confirmed that NanoSail-D is now a free flyer."
>>> If the deployment is successful, NanoSail-D will stay in low-Earth
>>> orbit
>>> between 70 and 120 days, depending on atmospheric conditions.
>>> NanoSail-D
>>> is designed to demonstrate deployment of a compact solar sail boom
>>> system that could lead to further development of this alternative
>>> solar
>>> sail propulsion technology and FASTSAT's ability to eject a
>>> nano-satellite from a micro-satellite - while avoiding re-contact with
>>> the FASTSAT satellite bus.
>>>
>>> Follow the NanoSail-D mission operation on Twitter at:
>>> http://twitter.com/nanosaild
>>>
>>> For additional information on the timeline of the NanoSail-D
>>> deployment
>>> visit:
>>> http://www.nasa.gov/pdf/501204main_NSD2_timeline_sequence.pdf
>>>
>>> To learn more about FASTSAwww.nasa.gov/centers/marshall/news/news/releases/2011/11-009.html
>>>
>>>
>>> For releases sent directly to you, contact: betty.humphery@xxxx.xxx.
>>>
>>> Marshall Space Flight Center
>>> Public Affairs Department
>>> 256-544-0034
>>> 256-544-5852 (fax)
>>> http://www.nasa.gov/centers/marshall/news
>>>
>>> Follow Marshall news and interact with the NASA Marshall community on
>>> Facebook, Twitter and Flickr:
>>>
>>> http://www.facebook.com/nasamarshallcenter
>>> http://twitter.com/NASA_Marshall
>>> http://www.flickr.com/photos/28634332@xxxxxxxx
>>>
>>
>> _______________________________________________
>> 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
------------------------------
Message: 4
Date: Thu, 20 Jan 2011 11:07:14 -0500
From: Dee <morsesat@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: "Citizen Satellites" in February Scientific
American
To: "'Daniel Schultz'" <n8fgv@xxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID: <0D41991ED1D14DFF867070B3285987A9@xxxxxxxx>
Content-Type: text/plain; charset=us-ascii
Gee,
Imagine a bunch of Hams getting together in their basement and/or garage to
assemble one of these....
Dee, NB2F
Tongue in cheek thanks to all those that did...
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Daniel Schultz
Sent: Thursday, January 20, 2011 2:41 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] "Citizen Satellites" in February Scientific American
I received the February issue of Scientific American today. On page 48 there
is an article by our own Bob Twiggs titled "Citizen Satellites", concerning
the history and future of Cubesats. It does briefly mention that "scores of
OSCAR communications satellites have been helping ham radio enthusiasts
connect since the early 1960's".
In the final paragraph it suggests that Cubesats may soon "enable an amateur
presence in space", which may "come sooner rather than later". Boy I sure
can't wait until we amateurs can start to launch our "do-it-yourself
satellites" into space....
Dan Schultz N8FGV
_______________________________________________
Sent via xx>
Message-ID:
<AANLkTineoKpbYojXSiv5imzq-w50dPfribLYb+Vh+DWF@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
You can own a piece of AMSAT history. I have the following software
available for a minimum donation of $5.00:
Atari W3IWI (1985) 5 1/4 disk
AMSAT AMS-81 (1986) for Sinclair computers - Cassette
W3IWI Basic Orbits for I-99 (1985) - Cassette
UoSat 1 & 2 Telemetry Capture Editing and Decoding program for IBM - 5 1/4
disk
W3IWI Orbit Prediction Program for TRS-80 Color Computer - Cassette
AMSAT 2064 Tracking Program (1984) - Cassette
ORBITS II for IBM (1993) - 3 1/2 disk
N4HY QuikTrak for IBM - 3 1/2 disk
If you are interested send your order to: AMSAT, 850 Sligo Ave, #600,
Silver Spring MD 20910
73- Martha - AMSAT Manager
------------------------------
Message: 6
Date: Thu, 20 Jan 2011 17:31:55 +0000
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
Subject: [amsat-bb] Re: "Citizen Satellites" in February Scientific
American
To: Daniel Schultz <n8fgv@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4D38718B.4020803@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I stopped reading Scientific American years ago. The quality of the
articles dropped, and it took on a decidely political stance on certain
subjects.
The "old" SA I used to enjoy would *never* have let a mistake like that
get into an article!
73, Jim
On 01/20/2011 07:41 AM, Daniel Schultz wrote:
> I received the February issue of Scientific American today. On page 48 there
> is an article by our own Bob Twiggs titled "Citizen Satellites", concerning
> the history and future of Cubesats. It does briefly mention that "scores of
> OSCAR communications satellites have been helping ham radio enthusiasts
> connect since the early 1960's".
>
> In the final paragraph it suggests that Cubesats may soon "enable an amateur
> presence in space", which may "come sooner rather than later". Boy I sure
> can't wait until we amateurs can start to launch our "do-it-yourself
> satellites" into space....
>
> Dan Schultz N8FGV
>
>
> _______________________________________________
> 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: Thu, 20 Jan 2011 18:13:25 +0000
From: "David H. Jordan" <n4csitwo@xxxxxxxxx.xxx>
Subject: [amsat-bb] ARISSat-1 article
To: "AMSAT-BB" <AMSAT-BB@xxxxx.xxx>
Message-ID:
<419808553-1295547242-cardhu_decombobulator_blackberry.rim.net-1831696541-@xxx
xxx.xxxx.xxxx.xx.xxxxxxxxxx>
Content-Type: text/plain
SpaceDaily.com just released an article concerning upcoming ISS activities.
It also contains a brief discussion of the ARISSat-1 mission at
http://tinyurl.com/6jeqf5b.
Thanks to JoAnne Maenpaa, K9JKM for bring this to my attention.
Dave, AA4KN
Sent via BlackBerry from T-Mobile
------------------------------
Message: 8
Date: Thu, 20 Jan 2011 19:04:11 +0000
From: Angelo Glorioso <n5uxt@xxxxxxx.xxx>
Subject: [amsat-bb] FW: Re: em40 needed
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BAY138-W13D0F58C8C38A64C5A4AA0EDF90@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Zack,
Damon is referring to me in this email. Many have no idea what it is
to loose your TWO homes in a hurricane with 7ft of water ( Katrina ).
Being displaced for another a year. Moving 3 times, having a new baby
come to our lives. ( Happiest I have been since before Katrina.) Parents
having health issues ( cancer - twice ). Finally moved back into my house
but still not finished. Lots of painting, trim, rebuild of the garage and
still
have to put the HF tower up. ( Stepper 3 element sitting on the floor in
the radio room ) and other stuff to do.
Believe me when I say, this is not what I wanted this late in my life but
life deals you a hand you have to deal with. I other words, QSL cards are
not on the top of my list things to do. I will get to it but in time. I did
check the web site but there is not option for GIRDS.
So, be patience. They will come.
73 de Angelo
> ----- Original Message -----
> From: "Zachary Beougher" <zack.kd8ksn@xxxxxxx.xxx>
> To: and havent recieved a card
> > back.
> > Also here is a link to print free cards http://www.radioqth.net/qsl.aspx
> > Cards can be onplain printer paper and will be fine
> >
> > Thanks to all the good hams that DO QSL
> > WA4HFN Damon
> > _______________________________________________
> > 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
> >
>
------------------------------
Message: 9
Date: Thu, 20 Jan 2011 11:13:03 -0800 (PST)
From: <na2x@xxxxx.xxx>
Subject: [amsat-bb] Re: finding yourself in the passband of an analog
satellite
To: amsat-bb@xxxxx.xxx
Message-ID: <78205.86195.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi Norm,
Good question. It brings to mind another question (a second post coming).
To do it manually, I first start with the info for the satellite found at:
http://www.amsat.org/amsat-new/satellites/status.php
For example, under VO-52, it shows (for the Indian Transponder)
Mode U/V (B) Linear Transponder (Inverting) (Indian Transponder): Operational
Uplink: 435.2200 - 435.2800 MHz SSB/CW
Downlink 145.9300 - 145.8700 MHz SSB/CW
I read this to mean that (with no doppler) for this transponder, an uplink
input frequency of 435.2200 MHz will result in a downlink frequency of
145.9300 MHz, etc., etc.
I make up a small table for each satellite showing uplink and downlink
frequencies across the range of frequencies. So for VO-52 (Indian
Transponder), the table looks like this:
Uplink Downlink
-----------------------------
435.22 MHz 145.87 MHz
435.23 MHz 145.88 MHz
435.24 MHz 145.89 MHz
435.25 MHz 145.90 MHz
435.26 MHz 145.91 MHz
435.27 MHz 145.92 MHz
435.28 MHz 145.93 MHz
Of course, you can put as many entries in the table as you wish. You could
have every Khz frequency in the range. I use this information as a starting
point. Doppler will move the downlink receive frequency.
So, for this satellite, if I hear some one calling CQ on 145.890 Mhz, I know
I should start at an uplink frequency of around 435.240 Mhz and then tune
around to find my downlink to match other station.
------------------------------
Message: 10
Date: Thu, 20 Jan 2011 14:39:16 -0500
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Re: finding yourself in the passband of an analog
satellite
To: <normn3ykf@xxxx.xx.xxx>, amsat bb <amsat-bb@xxxxx.xxx>
Message-ID: <xvfJ1f00C56cfur05vfJD3@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hi Norm,
Do you have a computer near the radio?
If so, Mike DK3WN has a little software solution to your question/problem!
http://www.dk3wn.info/software.shtml
http://www.dk3wn.info/files/lineartransponder.zip
Pick your satellite, move the slider...and off you go.
You'll at least be CLOSE....if you know the downlink of a station, use the
program to see what the uplink will be. Of course, Doppler complicates
things...move around a little for Doppler, etc.
Mark N8MH
At 09:57 AM 1/20/2011 -0500, normn3ykf@xxxx.xx.xxx wrote:
>Hi all!!
> How does one do this. It's not as easy as it sounds. Bearing in mind the
fact that most birds are inverting, how do you do it manually, and then
adjust for doppler.
>
>Or answer someone calling cq? How do you find his spot? Not as easy as zero
beating a cw station!!
>Thanks,
>Norm n3ykf
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End of AMSAT-BB Digest, Vol 6, Issue 37
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