| |
CX2SA > SATDIG 16.04.09 16:52l 918 Lines 30575 Bytes #999 (0) @ WW
BID : 25891-CX2SA
Read: GUEST IV3JER
Subj: AMSAT-BB-digest V4 180
Path: IZ3LSV<IK2XDE<F5GOV<F4BWT<F4DUR<CX2SA
Sent: 090416/1446Z @:CX2SA.LAV.URY.SA #:25891 [Minas] FBB7.00e $:25891-CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Send AMSAT-BB mailing list submissions to
amsat-bb@xxxxx.xxx
To subscribe or unsubscribe via the World Wide Web, visit
http://amsat.org/mailman/listinfo/amsat-bb
or, via email, send a message with subject or body 'help' to
amsat-bb-request@xxxxx.xxx
You can reach the person managing the list at
amsat-bb-owner@xxxxx.xxx
When replying, please edit your Subject line so it is more specific
than "Re: Contents of AMSAT-BB digest..."
Today's Topics:
1. Re: EggBeater (Steve Bluemel)
2. Re: Eggbeater (Steve Bluemel)
3. Re: EggBeater (Steve Bluemel)
4. Re: [amsat-florida] Re: FCC 70cm Proposal (James - KB7TBT)
5. AO-51 L/S (w7lrd@xxxxxxx.xxxx
6. AO-51 2100 UTC pass on 4/15/09 (WB2LLP)
7. Re: Automobile Noise (Edward Cole)
8. predict (Joseph Armbruster)
9. Re: predict (Greg D.)
10. Re: [amsat-florida] Re: FCC 70cm Proposal (Mike - N4HHA)
11. Re: Automobile Noise (Gordon JC Pearce)
12. Re: [amsat-edu] Link Budget for Cornell University's student
built satellite Violet (Nick)
13. Hudson Valley Satcom Group Net Tonight(Thursday at 8PM EST)
(Cotejaune2@xxx.xxxx
14. Re: EggBeater (Bruce Robertson)
15. PBH-9 floating ARHAB flight with HF telemetry
(Ralph Wallio, W0RPK)
16. Re: EggBeater (Edward Cole)
----------------------------------------------------------------------
Message: 1
Date: Wed, 15 Apr 2009 15:14:48 -0700
From: Steve Bluemel <stevebluemel@xxxxx.xxx>
Subject: [amsat-bb] Re: EggBeater
To: Dave hartzell <hartzell@xxxxx.xxx>, AMSAT-BB@xxxxx.xxx
Message-ID:
<393db9380904151514o3cfb1173s97babbabee5fcd81@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Dave,
Dont be too suprised. It probably not the antenna, but my construction of
it. I am building it and I new to the theory. I wish I had been born with an
engineer's mind instead of good looks!
I also had not been listening to the correct birds. Thanks to Rick WA4NVM, I
did copy some of the AO-27 pass at approx. 3:00pm pacific time. It wasnt
great copy, but i heard
On Wed, Apr 15, 2009 at 3:01 PM, Dave hartzell <hartzell@xxxxx.xxx> wrote:
> Hi Steve,
>
> It is surprising to read that you are not hearing anything. I have
> repeatedly used a 2m and 70cm Eggbeater for the sats and have had no
> problem hearing things. No pre-amp.
>
> I was using a short cable (e.g. less than 10 meters). The rigs I
> used were a FT-736r (deaf) and a FT-847 (so-so).
>
> 73,
>
> Dave
>
> On Wed, Apr 15, 2009 at 10:08 AM, Steve Bluemel <stevebluemel@xxxxx.xxx>
> wrote:
> > Well, Im sorry to say that my Egg Beater experiment has yet to yield any
> > good results. I have attempted passes on IIS, AO-51, and SO-50 and not
> heard
> > a single contact. Im a trying some reconfiguring and will keep at it. I
> will
> > post pictures of my progress soon and would appreciate any observations
> you
> > might have.
> >
> > I'll tell you, the Pre-amp thread could not have been more timely. I just
> > ordered one from ARR. If im lucky....and im always lucky, this will make
> > some difference.
> >
> > In the mean time, I will listen for you all with the Elk and HT!
> >
> > Cheers!
> >
>
------------------------------
Message: 2
Date: Wed, 15 Apr 2009 15:21:57 -0700
From: Steve Bluemel <stevebluemel@xxxxx.xxx>
Subject: [amsat-bb] Re: Eggbeater
To: AMSAT-BB@xxxxx.xxx
Message-ID:
<393db9380904151521q5d3a79cdn2973a36fdc317551@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Im sorry. I sent my last email prematurely.
As i was saying, I did copy W6DXO, EX1ROR, W6RO, AND W7OJ during the last
pass of AO-27. It wasnt spectacular copy, but i am still smiling that it
worked at all.
It had the best receive at nearly 90 degrees. I was hoping to improve my
lower angle reception.
This will be fantastic when I figure it out.
Thanks again to Rick WA4NVM for getting me on the correct bird!
Cheers!
Steve KI6OQU
------------------------------
Message: 3
Date: Wed, 15 Apr 2009 15:43:03 -0700
From: Steve Bluemel <stevebluemel@xxxxx.xxx>
Subject: [amsat-bb] Re: EggBeater
To: Jeff Yanko <wb3jfs@xxx.xxx>, AMSAT-BB@xxxxx.xxx
Message-ID:
<393db9380904151543q58bc0fb8k120e1a6c3fb5794f@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hey Jeff,
I hear ya. I have a blast with the Elk and my FT-60. Part of the fun for me
is figuring out how things work and experimenting. I could buy a M2 antenna
and be done with it, but this just keeps the hobby new for me.
I worked AO-50 and ISS on my first attempt with the elk long periodic, and
man did the big hit me!
Steve
KI6OQU
On Wed, Apr 15, 2009 at 3:27 PM, Jeff Yanko <wb3jfs@xxx.xxx> wrote:
> Hi Steve,
>
> I don't use an eggbeater but have been having fun with an HT and Arrow
> antenna. I managed to work a couple stations on the 3:00pm AO-27 pass.
> Surprised to work KL7XJ, in Alaska. He had a great signal here in Las
> Vegas. The pre-amp will certainly help out and you should be copying the
> birds without a problem.
>
> 73,
>
> Jeff WB3JFS
>
>
> ----- Original Message ----- From: "Steve Bluemel" <stevebluemel@xxxxx.xxx
> >
> To: "Dave hartzell" <hartzell@xxxxx.xxx>; <AMSAT-BB@xxxxx.xxx>
> Sent: Wednesday, April 15, 2009 3:14 PM
> Subject: [amsat-bb] Re: EggBeater
>
>
> Hi Dave,
>>
>> Dont be too suprised. It probably not the antenna, but my construction of
>> it. I am building it and I new to the theory. I wish I had been born with
>> an
>> engineer's mind instead of good looks!
>>
>> I also had not been listening to the correct birds. Thanks to Rick WA4NVM,
>> I
>> did copy some of the AO-27 pass at approx. 3:00pm pacific time. It wasnt
>> great copy, but i heard
>>
>> On Wed, Apr 15, 2009 at 3:01 PM, Dave hartzell <hartzell@xxxxx.xxx>
>> wrote:
>>
>> Hi Steve,
>>>
>>> It is surprising to read that you are not hearing anything. I have
>>> repeatedly used a 2m and 70cm Eggbeater for the sats and have had no
>>> problem hearing things. No pre-amp.
>>>
>>> I was using a short cable (e.g. less than 10 meters). The rigs I
>>> used were a FT-736r (deaf) and a FT-847 (so-so).
>>>
>>> 73,
>>>
>>> Dave
>>>
>>> On Wed, Apr 15, 2009 at 10:08 AM, Steve Bluemel <stevebluemel@xxxxx.xxx>
>>> wrote:
>>> > Well, Im sorry to say that my Egg Beater experiment has yet to yield >
>>> any
>>> > good results. I have attempted passes on IIS, AO-51, and SO-50 and not
>>> heard
>>> > a single contact. Im a trying some reconfiguring and will keep at it. I
>>> will
>>> > post pictures of my progress soon and would appreciate any observations
>>> you
>>> > might have.
>>> >
>>> > I'll tell you, the Pre-amp thread could not have been more timely. I >
>>> just
>>> > ordered one from ARR. If im lucky....and im always lucky, this will >
>>> make
>>> > some difference.
>>> >
>>> > In the mean time, I will listen for you all with the Elk and HT!
>>> >
>>> > Cheers!
>>> >
>>>
>>> _______________________________________________
>> 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: Wed, 15 Apr 2009 19:11:27 -0400
From: "James - KB7TBT" <kb7tbt@xxxxx.xxx>
Subject: [amsat-bb] Re: [amsat-florida] Re: FCC 70cm Proposal
To: <amsat-bb@xxxxx.xxx>
Message-ID: <B3C61342B6284D509DF86BD34F620730@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Cant wait to fire up the ATV transmitter and make people break dance....LOL
James
KB7TBT
www.kb7tbt.com
>>>>
>>>> FCC Proposes to Allocate 20 MHz of Spectrum in 413-456 MHz Band For
>>>> Implanted Neuromuscular Devices
------------------------------
Message: 5
Date: Thu, 16 Apr 2009 00:58:51 +0000 (UTC)
From: w7lrd@xxxxxxx.xxx
Subject: [amsat-bb] AO-51 L/S
To: amsat-bb@xxxxx.xxx
Message-ID:
<1743257741.2150741239843531128.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx
.xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Solid QSO with K4YYL mode L/S, great to know my AO-40 (sobsob) gear is still
working! Now, where's that HEO?
73 Bob W7LRD
------------------------------
Message: 6
Date: Wed, 15 Apr 2009 21:36:35 -0400
From: WB2LLP <wb2llp@xxxxxxxxx.xxx>
Subject: [amsat-bb] AO-51 2100 UTC pass on 4/15/09
To: AMSAT -BB <AMSAT-BB@xxxxx.xxx>
Message-ID: <4952576576CC44B0B95B5CE16E764402@xxxx>
Content-Type: text/plain; charset=iso-8859-1
I was listening with my AO-40 S band equipment to the AO-51 2100 UTC pass
onApril 15 up the US north east. But heard nothing. Was anybody active? It
was a work day and most of the footprint was in the ocean.
73 de WB2LLP Gene
------------------------------
Message: 7
Date: Wed, 15 Apr 2009 19:17:07 -0800
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Automobile Noise
To: BobsImsai8800@xxx.xxxx amsat-bb@xxxxx.xxx
Message-ID: <200904160317.n3G3H7QN026669@xxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"; format=flowed
At 08:57 AM 4/15/2009, BobsImsai8800@xxx.xxx wrote:
>Hi all -- some facts I have learned about
>automobile noise after 40 years in the
>profession. DEALER FIX: While dealing with
>many different professional communications
>users, I found that the automobile industry
>usually has a kit to fix most RF and electrical
>noises that are generated by the auto and with
>problems that the auto has with RF interference
>getting into the circuits. REASON -- It is
>cheaper to provide the equipment to fix the
>autos that have a problem due to installed
>communications equipment, than to install the
>fix on millions and millions of autos that don't
>need it. SOLUTION -- I always told the
>customer to check with the dealer to find the
>proper fix -- it usually took a manager and up
>the chain to a district manager for a fix. And
>now we have Google and the Internet, which makes
>finding these fixes easier. Of course the new
>Hybrids have a whole new set of problems
>and solutions. Side note -- the diesel and the
>2007 trip to Dayton: One would think a diesel
>is very quite - no ignition and no electric fan
>on the radiator. Wrong -- the electric
>injector pump on the 1997 Ford F350 had 20 over
>S-9 noise when we put the radio in it. My F150
>with a V6 gas engine has no noise, but it was
>S-9 noise when just parked next to the diesel.
>Google RF noise on the Ford diesel -- there are
>some solutions. Bob, K5GNA **************Great
>deals on Dell???s most popular laptops ?
>Starting at $479
>(http://pr.atwola.com/promoclk/100126575x1220631252x1201390195/aol?redir=http
:%2F%2Fad.doubleclick.net%2Fclk%3B213968550%3B35701427%3Bh)
>_______________________________________________
>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
You never know.
I had a 1978 International Scout Traveler (think
diesel powered 2-door explorer). It used a
6-cylinder Nisan diesel engine with standard
mechanical rack injector. I had such a low RF
noise level that I heard all the noisy vehicles
passing by on the road. My current truck is a
2002 Toyota Tundra, very low audible noise in the
cabin and no discernable radio noise (the heater
fan motor is the notible source).
I agree that the manufacturer is a good source
for noise fixes (more likely a couple years after introduction of a new
model).
73, Ed - KL7UW
------------------------------
Message: 8
Date: Wed, 15 Apr 2009 23:37:29 -0400
From: Joseph Armbruster <josepharmbruster@xxxxx.xxx>
Subject: [amsat-bb] predict
To: "AMSAT-BB@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Message-ID: <49E6A7F9.4000404@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Does anyone here use the dos version of Predict?
Joseph Armbruster
KJ4JIO
------------------------------
Message: 9
Date: Wed, 15 Apr 2009 22:51:32 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: predict
To: <josepharmbruster@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W49F3DEBB09BA3FA7BFB09CA97A0@xxx.xxx>
Content-Type: text/plain; charset="Windows-1252"
I tried it years ago. There were a couple of really annoying (to me, at
least) things about it, and I didn't have the tools to modify it, so I stayed
with FODTrack for Az/El/Doppler tracking, and PCTrack for the eye candy. I
don't recall if this was under some version of Windows (3.1 or 98se?), or if I
was running DESQView for the multi-tasking.
I'm solidly on Linux now, and use Predict (suitably modified) for tracking,
and GPredict for the visuals.
Greg KO6TH
> Date: Wed, 15 Apr 2009 23:37:29 -0400
> From: josepharmbruster@xxxxx.xxx
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] predict
>
>
> Does anyone here use the dos version of Predict?
>
> Joseph Armbruster
> KJ4JIO
> _______________________________________________
> 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
_________________________________________________________________
Windows Live?: Life without walls.
http://windowslive.com/explore?ocid=TXT_TAGLM_WL_allup_1b_explore_042009
------------------------------
Message: 10
Date: Thu, 16 Apr 2009 02:33:39 -0400
From: "Mike - N4HHA" <n4hha@xxxxx.xxx>
Subject: [amsat-bb] Re: [amsat-florida] Re: FCC 70cm Proposal
To: <amsat-bb@xxxxx.xxx>, <amsat-florida@xxxxx.xxx>
Message-ID: <91AEEFAEC357446787EE4011B8F899B3@xxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
This statement from the NPRM seems to indicatate that we might not see use
of this out in the open vs. a permanant implant.
"The Notice proposes to limit MMN operations to use only by persons for
diagnostic and therapeutic purposes, and only to the extent provided under
the direction of authorized health care professionals."
Mike - N4HHA
----- Original Message -----
From: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
To: "Keith N4ZQ" <n4zq@xxxxxxx.xxx>; <amsat-bb@xxxxx.xxx>;
<amsat-florida@xxxxx.xxx>
Sent: Wednesday, April 15, 2009 3:38 AM
Subject: [amsat-florida] Re: [amsat-bb] FCC 70cm Proposal
> Hi All,
>
>>From another group I read that the maximum power radiated outside the body
> will be around -30 to -40dBm, so not much chance of these systems being a
> problem to us.
>
> But of course if they expect "protection" from our signals....
>
> 73
>
> Graham
> ----- Original Message -----
> From: "Keith N4ZQ" <n4zq@xxxxxxx.xxx>
> To: <amsat-bb@xxxxx.xxx>; <amsat-florida@xxxxx.xxx>
> Sent: Monday, April 13, 2009 11:18 PM
> Subject: [amsat-bb] FCC 70cm Proposal
>
>
>> This is interesting.... N4ZQ
>>
>>
>>
>> FCC Proposes to Allocate 20 MHz of Spectrum in 413-456 MHz Band For
>> Implanted Neuromuscular Devices
>>
>> The FCC has released a Notice of Proposed Rulemaking (NPRM - ET Docket
>> 09-36) seeking comment on a proposal to allocate 20 MHz of spectrum in
>> the 413-457 MHz band for use by wireless medical devices that could be
>> implanted into the human body and used to restore sensation and
>> mobility to paralyzed limbs and organs. The devices would act as a
>> wireless medical micro-power network (MMN) within the patient. Among
>> the conditions that could be treatable using MMNs include polio, ALS
>> (Lou Gehrig's disease), cerebral palsy, and spinal cord injuries.
>>
>> The 400 MHz band is targeted because it is optimal for RF propagation
>> through body tissue. The devices would require at least 5 MHz of
>> bandwidth to function and would operate on a low power, secondary non-
>> interference basis. Twenty MHz of spectrum in four band segments are
>> proposed so that the device would have four options in case one band
>> segment was already in use in a given area. The NPRM seeks comment on
>> the feasibility of four different band segments:
>>
>> * 413-419 MHz
>>
>> * 426-432 MHz
>>
>> * 438-444 MHz
>>
>> * 451-457 MHz
>>
>> Comment is also sought on:
>>
>> * Potential for interference between MMNs and incumbent users
>>
>> * Service rules (licensed or unlicensed, definitions, permissible
>> communications, eligibility, etc.)
>>
>> * Technical rules (power limitations, bandwidth, frequency stability,
>> channelization, antenna locations, etc.)
>>
>> The text of the News Release is available at:
>> http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-289482A1.doc
>>
>>
>>
>> ____________________________________________________________
>> Learning Centers - Click Here.
>>
http://thirdpartyoffers.netzero.net/TGL2241/fc/BLSrjpYXVv0gKYPqCr8IkCaCq5KAFAR
A3MaWnAKwpstVyhQi63dVmuM3Jz6/
>>
>> _______________________________________________
>> 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
>
> _______________________________________________
> Via the AMSAT-Florida mailing list courtesy of AMSAT-NA
> AMSAT-Florida@xxxxx.xxx
> http://amsat.org/mailman/listinfo/amsat-florida
------------------------------
Message: 11
Date: Thu, 16 Apr 2009 12:15:22 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] Re: Automobile Noise
To: "'amsat-bb'" <amsat-bb@xxxxx.xxx>
Message-ID: <49E7134A.3040609@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Edward Cole wrote:
> I had a 1978 International Scout Traveler (think
> diesel powered 2-door explorer). It used a
> 6-cylinder Nisan diesel engine with standard
> mechanical rack injector. I had such a low RF
> noise level that I heard all the noisy vehicles
> passing by on the road.
A couple of years ago, I had an '88 Citro?n CX 25DTR turbodiesel, which
was so (electrically) quiet I could pick out individual interference
sources in cars parked beside me. Mechanically it sounded like a
Caterpillar D9, though - not the smoothest diesel I've ever had but then
300lb/ft at 1800rpm with 16psi boost will do that.
I had it running electricall silent once, when the main power fuse blew
disconnecting everything except the starter motor feed - no electrics at
all. All I did was remove the brass slug from the stop solenoid valve,
tickle the starter lead (there's a handy plug and socket beside the
battery for doing this) and ran about 40 miles with no electrics. Lack
of brake lights was a bit scary, but the roads were quiet ;-)
Gordon
------------------------------
Message: 12
Date: Thu, 16 Apr 2009 06:35:48 -0500
From: "Nick" <quadpugh@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: [amsat-edu] Link Budget for Cornell
University's student built satellite Violet
To: "'Yoon Ho Lee'" <yl482@xxxxxxx.xxx>
Cc: PaulDarby@xxx.xxxx Ryan Leblanc <ral2687@xxxxxxxxx.xxx>, Lee
Landry <IEEE.landry@xxxxx.xxx>, amsat-bb@xxxxx.xxxxxxxxxx Mancuso
<mancuso.christopher@xxxxx.xxx>, Prathamesh Chawan
<prathameshchawan@xxxxx.xxx>
Message-ID: <000b01c9be87$7dc08080$79418180$@xxx>
Content-Type: text/plain; charset="us-ascii"
Hi Danny
You did a good job on the link budget. Jan King is the author and he will
comment if you send him a copy. Here are my comments.
1. Patch antennas are hard to put on a cubesat because of their
size.
2. If you fly dipoles they have very deep lobes of the end of the
ends and will cause deep
fades when the antenna alimented off the ends.
3. The ground antenna when at 5 degrees elevation look into the
warm earth i.e. 290 deg K
For a reality check go copy AO 51. Copy the telemetry beacon. It uses FSK
modulation and if you chose GMSK it is several db improvement over FSK. The
antenna are turnstile with 2 db gain circular polarized. AO-51 keeps the
antennas nadir pointing so there is very little fading due to polarization
misalignments and this is a challenge on 10 cm cube.
If you make it to the cube sat conference at San Louis Obispo look me up I
am 6 ft tall with red hair and 64 years old.
Good luck
nick
-----Original Message-----
From: Yoon Ho Lee [mailto:yl482@xxxxxxx.xxxx
Sent: Wednesday, April 15, 2009 9:18 AM
To: Nick
Subject: Re: [amsat-edu] Link Budget for Cornell University's student built
satellite Violet
Hello Nick,
It seems like the listserv denied my attachment. Here are the files.
Thank you for your interest and help!
-Danny
Nick wrote:
> Hi Danny
> I will review your link budget but it was not attached to your email.
>
> Please reply directly to this email off list
>
> nick
>
> -----Original Message-----
> From: amsat-edu-bounces@xxxxx.xxx [mailto:amsat-edu-bounces@xxxxx.xxxx
> On Behalf Of Yoon Ho Lee
> Sent: Tuesday, April 14, 2009 7:12 PM
> To: amsat-edu@xxxxx.xxx
> Subject: [amsat-edu] Link Budget for Cornell University's student
> built satellite Violet
>
> Dear whom it may concern,
>
> I'm Danny Lee from Cornell University's student built satellite team
> Violet, working on Electrical Subsystem, specifically Telemetry and
Control.
> For those of you familiar with CUSat, our team is under the same UNP
> program, on the 6th competition.
>
> I have worked out a preliminary link budget from limited resources and
> knowledge, and I would greatly appreciate any input from experts out
there.
> Please read the note before proceeding to the spreadsheet.
>
> Thank you very much in advance, and I look forward to your input.
>
> Sincerely,
>
> Danny Lee
> Electrical Subsystem,
> Team Violet,
> Cornell University
>
>
>
>
------------------------------
Message: 13
Date: Thu, 16 Apr 2009 09:19:53 EDT
From: Cotejaune2@xxx.xxx
Subject: [amsat-bb] Hudson Valley Satcom Group Net Tonight(Thursday at
8PM EST)
To: amsat-bb@xxxxx.xxx
Message-ID: <c59.470ad167.37188a79@xxx.xxx>
Content-Type: text/plain; charset="UTF-8"
It's time again for another net tonight Thursday the 16 th of April. We
have our nets alternating Thursdays on the Mt Beacon repeater 146970 PL 100
and
on Echolink (n2eyh-l). We are located about 70 miles north of NYC. Please
join us and share your satellite knowledge with the group.
73 Gary WA2AQH
**************Great deals on Dell?s most popular laptops ? Starting at
$479
(http://pr.atwola.com/promoclk/100126575x1220029082x1201385915/aol?redir=http:
%2F%2Fad.doubleclick.net%2Fclk%3B213969145%3B35701480%3Bh)
------------------------------
Message: 14
Date: Thu, 16 Apr 2009 10:31:35 -0300
From: Bruce Robertson <ve9qrp@xxxxx.xxx>
Subject: [amsat-bb] Re: EggBeater
To: Steve Bluemel <stevebluemel@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<49657a760904160631g45f1efc4v969498da08716467@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
On Wed, Apr 15, 2009 at 2:36 PM, Rick - WA4NVM <wa4nvm@xxxxxxx.xxx> wrote:
>
> Steve,
>
> Good luck with your testing. ?The ISS and A0-51 haven't been on for you
> to try with your setup. ?Try S0-50 and A0-27 at this time.
>
> Look for you on the birds,
> Rick- WA4NVM
Thanks for sharing your experiments with us, Steve.
In my experience, with a omni antenna and no preamp, these two 70cm
satellites are very difficult to hear if there is any significant
amount of cable between the antenna and the radio. On the other hand I
find that a low-noise preamp *at the antenna* with a well-built omni
antenna should hear at least parts of their passes. If you're unsure
that your egg-beater is working properly, consider using a simple 1/4
wave vertical with legs of about 6" at 70cm. Put this as close to the
preamp as possible: I constructed mine out of the connector that mates
with the preamp's connector!
Again in my experience, an easier introductory experiment is to copy
the birds with CW telemetry, especially LO-19 (sometimes LU-19). If
your radio has CW reception in 70cm, you might want to give this a try
without the preamp. SatPC32 has the frequency for this bird stored in
it from the get-go. You needn't have Doppler tuning in place; just
look at the corrected frequency and tune around that. Don't make your
CW filter too tight: 500 Hz is better than 200 if you're hunting for a
moving signal.
Indeed, the FM signals of SO-50 and AO-27 can also be copied in CW
mode, and will be more easily heard with a typical radio than the same
signal in FM mode. Of course, you can't understand the modulated
information, but it is a good baseline to ensure that other aspects of
your station are working well, and allows you to focus on the issue of
antenna gain. Similarly, the beacon on VO-52, though usually an
unmodulated CW signal, provides a pretty nice baseline for 2m
reception.
73, Bruce
VE9QRP
>> Well, Im sorry to say that my Egg Beater experiment has yet to yield any
>> good results. I have attempted passes on IIS, AO-51, and SO-50 and not
>> heard
>> a single contact. Im a trying some reconfiguring and will keep at it. I
>> will
>> post pictures of my progress soon and would appreciate any observations
>> you
>> might have.
>>
>> I'll tell you, the Pre-amp thread could not have been more timely. I just
>> ordered one from ARR. If im lucky....and im always lucky, this will make
>> some difference.
>>
>> In the mean time, I will listen for you all with the Elk and HT!
>>
>> Cheers!
>>
>> Steve KI6OQU
>> _______________________________________________
>> 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: 15
Date: Thu, 16 Apr 2009 08:56:29 -0500
From: "Ralph Wallio, W0RPK" <W0RPK@xxxxxx.xxx>
Subject: [amsat-bb] PBH-9 floating ARHAB flight with HF telemetry
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <D7F598E275104C9E85A775BB3DF05293@xxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
The NS3 group of Cornell University engineering graduate students will launch
PBH-9 (Project Blue
Horizon) from Lockheed Martin in Owego NY on Sunday evening, 19Apr09, at
approximately 21:00EDT
(Monday, 20Apr09, 01:00UT) This ARHAB flight (Amateur Radio High Altitude
Ballooning) will ascend
and then float for up to 50-hours while drifting to the east.
The payload will include a KC2TUA-8 144.390 APRS beacon (track via
http://findu.com/cgi-bin/find.cgi?call=KC2TUA-8) and HF CW position report and
telemetry downlinks
on 7.104MHz and 10.148MHz. The NS3 PBH-9 team requests distant ground
stations receive and report
HF telemetry via N2XE@xxxx.xxx including reception UT date and time.
Distant receiving stations are welcome to also submit HF reception reports to
W0RPK@xxxxx.xxx for
the ARHAB <50MHz telemetry reception record, see
http://showcase.netins.net/web/wallio/ARHABrecords.htm.
Additional PBH-9 information including HF telemetry transmit schedule and
format is available via
http://showcase.netins.net/web/wallio/ARHABlaunchannouncements.htm. Flight
updates are available
from the NS3 PBH-9 team via http://twitter.com/pbh3.
TNX es 73 de Ralph Wallio, W?RPK
W0RPK@xxxxxx.xxx W0RPK@xxxx.xxx W0RPK@xxxxx.xxx
http://showcase.netins.net/web/wallio/
Hubbert's Peak - The Mother of all Perfect Storms
------------------------------
Message: 16
Date: Thu, 16 Apr 2009 06:27:54 -0800
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: EggBeater
To: Bruce Robertson <ve9qrp@xxxxx.xxx>, Steve Bluemel
<stevebluemel@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <200904161427.n3GERs09031779@xxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
I can echo what Bruce says! {uh pun intended}
Early after "Echo" (AO-51) was launched I set up a ground-plane
antenna with a 432-MHz preamp and copied telemetry quite well. The
antenna was a 1/4 wave 2m mag-mount whip (19-inch) set on a 12-inch
square of sheet metal. The preamp was attached to the 12-foot run of
RG-58. It has the same GasFet as used in the ARR preamp with about
0.5 dB NF and 20 dB gain.
BTW you will find the ARR is a good choice for satellite, and I will
predict that you will be very happy with the results used with the
eggbeater. Only a small yagi will better your eggbeater.
73, Ed - KL7UW
got materials to build my AA2TX 2m-Lindenblad. Tony have you any
dimension for a 432 version?
At 05:31 AM 4/16/2009, Bruce Robertson wrote:
>On Wed, Apr 15, 2009 at 2:36 PM, Rick - WA4NVM <wa4nvm@xxxxxxx.xxx> wrote:
> >
> > Steve,
> >
> > Good luck with your testing. The ISS and A0-51 haven't been on for you
> > to try with your setup. Try S0-50 and A0-27 at this time.
> >
> > Look for you on the birds,
> > Rick- WA4NVM
>
>Thanks for sharing your experiments with us, Steve.
>
>In my experience, with a omni antenna and no preamp, these two 70cm
>satellites are very difficult to hear if there is any significant
>amount of cable between the antenna and the radio. On the other hand I
>find that a low-noise preamp *at the antenna* with a well-built omni
>antenna should hear at least parts of their passes. If you're unsure
>that your egg-beater is working properly, consider using a simple 1/4
>wave vertical with legs of about 6" at 70cm. Put this as close to the
>preamp as possible: I constructed mine out of the connector that mates
>with the preamp's connector!
snip---------
>73, Bruce
>VE9QRP
>
> >> Well, Im sorry to say that my Egg Beater experiment has yet to yield any
> >> good results. I have attempted passes on IIS, AO-51, and SO-50 and not
> >> heard
> >> a single contact. Im a trying some reconfiguring and will keep at it. I
> >> will
> >> post pictures of my progress soon and would appreciate any observations
> >> you
> >> might have.
> >>
> >> I'll tell you, the Pre-amp thread could not have been more timely. I just
> >> ordered one from ARR. If im lucky....and im always lucky, this will make
> >> some difference.
> >>
> >> In the mean time, I will listen for you all with the Elk and HT!
> >>
> >> Cheers!
> >>
> >> Steve KI6OQU
------------------------------
_______________________________________________
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 4, Issue 180
****************************************
Read previous mail | Read next mail
| |
