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CX2SA > SATDIG 11.05.08 20:58l 1031 Lines 29942 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. CUTE 1.7 +APD II heard (andy thomas)
2. Re: Mode S Antenna question (Ronald Nutter)
3. Re: Mode S Antenna question (kc6uqh)
4. Linear satellites (Mike McConnell)
5. ANS-132 AMSAT Weekly Bulletins (Lee McLamb)
6. AAUSAT-II FFSK/MSK recorded (Mineo Wakita)
7. Portland road trip results (John Mock KD6PAG)
8. Delfi Not Heard (john heath)
9. AO-16 report (John Price)
10. AO-16 report (John Price)
11. Re: Delfi Not Heard (Stefan Wagener)
12. AAUSAT-II FFSK/MSK recorded #2 (Mineo Wakita)
13. Delfi-C3 information (Nico Janssen)
14. bias tee circuits and components for 2.4 GHz downconverter
(Michael Tondee)
15. Re: Delfi Not Heard (JoAnne Maenpaa)
----------------------------------------------------------------------
Message: 1
Date: Sat, 10 May 2008 21:33:52 +0100 (BST)
From: andy thomas <andythomasmail(AT)yahoo.co.uk>
Subject: [amsat-bb] CUTE 1.7 +APD II heard
To: amsat <amsat-bb(AT)amsat.org>
Message-ID: <447836.25100.qm(AT)web27801.mail.ukl.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
21:15 UTC CW, doppler corrected from 437.274.789 (gave
a pleasant tone):
8.......5.....5f ...17 CUTE 87.......b0 38 ...7...24
59 5U.....8
(... are when I couldn't decode). weak signal, 42 deg
elevation,
Rig - no preamp, WiMo Helix for 70cm, IC-910 cntrolled
by Ham Radio Deluxe. .WAV file generated by
ScannerRecorder and replayed.
Will have higher elevation (=stronger sigs) approx.
this time tomorrow.
73 de andy G0SFJ
__________________________________________________________
Sent from Yahoo! Mail.
A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html
------------------------------
Message: 2
Date: Sat, 10 May 2008 16:43:33 -0500
From: Ronald Nutter <rnutter(AT)networkref.com>
Subject: [amsat-bb] Re: Mode S Antenna question
To: Edward Cole <kl7uw(AT)acsalaska.net>
Cc: amsat-bb(AT)amsat.org
Message-ID: <48261705.5070106(AT)networkref.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
What got me thinking about the circular polarized type of antenna is to
minimize the signal dropouts from the satellite as it spins. My other
thought was to put a second antenna up, orient it horizontally and put a
remote antenna switch in place so that I can flip between vertical and
horizontal. Is my idea sound or am I barking up the wrong tree ?
Ron
KA4KYI
Edward Cole wrote:
> At 05:26 AM 5/10/2008, Ronald Nutter wrote:
>> I have been using a 2.4 ghz Vagi antenna for my Mode S antenna the past
>> few days. I am seeing quite a bit of signal droppout as AO-51 does a
>> little rotating. With a circular polarized antenna do any better ? I
>> have found a source for a 2.4ghz 10 db RHCP antenna and thought about
>> trying that. I know I cant get it before AO-51 goes back to V/U mode
>> but thought I could try that next time. The antenna I found has about a
>> 50 degree pattern so I should get decent coverage since I have it
>> pointed at a fixed elevation because I dont have an az/el rotor.
>>
>> Ron
>> KA4KYI
>
> Ron,
>
> From what I have read on what others are using for 2.4 GHz (mode-S) on
> AO-51 (or other Leo sats) a 10-dB circular pol. antenna should work
> fine. As far as using it without elevation control I cannot tell you
> how that will work. Ten dB may be a bit too narrow for best operation
> at all elevations. But the gain would be good to have for the period
> of time the satellite is within your beam. I believe Bob Bruninga has
> found that a fixed elevation of 20-degrees makes a good solution when
> not moving elevation.
>
> If the antenna is accessible you can experiment on what angle works best
> by trying it at several angles.
>
> I plan to build my self a simple corner reflector fed with a dipole
> which should result in about 10-dB gain. I also have an 85cm dish with
> helix feed that was used for AO-40. I have two 2.4 -GHz LNA's and two
> Drake converters (123-MHz; 435-MHz output) so that any combination will
> be possible when all is re-installed. I have full az-el tracking.
>
>
>
>
> *****************************************************
> 73, Ed - KL7UW BP40iq, 6m - 3cm
> 144-EME: FT-847, mgf-1801, 4x-xp20, 185w
> http://www.kl7uw.com AK VHF-Up Group
> NA Rep. for DUBUS: dubususa(AT)hotmail.com
> *****************************************************
>
------------------------------
Message: 3
Date: Sat, 10 May 2008 17:48:06 -0700
From: "kc6uqh" <kc6uqh(AT)cox.net>
Subject: [amsat-bb] Re: Mode S Antenna question
To: "Ronald Nutter" <rnutter(AT)networkref.com>, "Edward Cole"
<kl7uw(AT)acsalaska.net>
Cc: amsat-bb(AT)amsat.org
Message-ID: <000601c8b300$acfb6e70$0200a8c0(AT)kc6uqh>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Ron,
AO-51 is linear polarized. A cicrular polarized antenna of either rotation
will minimize fading from Spacecraft rotation. With a linear to circular you
lose 3 dB of gain and you have no cancelation for ground and building
reflections that can be more severe than Spacecraft rotation depending on
terrain.
Art, KC6UQH
----- Original Message -----
From: "Ronald Nutter" <rnutter(AT)networkref.com>
To: "Edward Cole" <kl7uw(AT)acsalaska.net>
Cc: <amsat-bb(AT)AMSAT.Org>
Sent: Saturday, May 10, 2008 2:43 PM
Subject: [amsat-bb] Re: Mode S Antenna question
> What got me thinking about the circular polarized type of antenna is to
> minimize the signal dropouts from the satellite as it spins. My other
> thought was to put a second antenna up, orient it horizontally and put a
> remote antenna switch in place so that I can flip between vertical and
> horizontal. Is my idea sound or am I barking up the wrong tree ?
>
> Ron
> KA4KYI
------------------------------
Message: 4
Date: Sat, 10 May 2008 20:12:00 -0500
From: "Mike McConnell" <w0pd(AT)mchsi.com>
Subject: [amsat-bb] Linear satellites
To: <amsat-bb(AT)amsat.org>
Message-ID: <003201c8b304$03d32730$0b797590$(AT)com>
Content-Type: text/plain; charset="us-ascii"
I am somewhat new to satellites, but I have a question. I use a computer
program to help with Doppler shift and to manage satellite memories. On AO-7
and VO-52 I have the following set as the middle of the pass band. This is
what I set into the radio VFO. I have noticed that I have to adjust the
transmitter frequency. I thought that the TX and RX would track each other?
Does the relationship between TX and RX frequencies on the satellite change?
If I am setting the wrong base frequency into my VFO's for these two
satellites, what are better frequencies to use?
Thanks
Satellite
Lower
Upper
middle
VO-52A
UPLINK
435.2200
435.2800
435.2500
DOWNLINK
145.8700
145.9300
145.9000
VO-52B
UPLINK
435.2250
435.2750
435.2500
DOWNLINK
145.9250
145.8750
145.9000
AO-7 A
UPLINK
145.8500
145.9500
145.9000
DOWNLINK
29.4000
29.5000
29.4500
AO-7 B
UPLINK
432.1250
432.1750
432.1500
DOWNLINK
145.9750
145.9250
145.9500
Mike McConnell, Ph.D.
W0PD
1518 Willson Ave.
Webster City, IA 50595
515-835-9363
------------------------------
Message: 5
Date: Sat, 10 May 2008 21:45:51 -0400
From: Lee McLamb <ku4os(AT)cfl.rr.com>
Subject: [amsat-bb] ANS-132 AMSAT Weekly Bulletins
To: amsat-bb(AT)amsat.org
Message-ID:
<20080511014552.JFDS2106.cdptpa-omta04.mail.rr.com(AT)den.cfl.rr.com>
Content-Type: text/plain; charset="iso-8859-1"; format=flowed
AMSAT NEWS SERVICE
ANS-132
ANS is a free, weekly, news and information service of AMSAT North America,
The
Radio Amateur Satellite Corporation. ANS reports on the activities of a
worldwide group of Amateur Radio operators who share an active interest in
designing, building, launching and communicating through analog and digital
Amateur Radio satellites.
Please send any amateur satellite news or reports to:
ans-editor(AT)amsat.org
In this edition:
* AMSAT Engineering Teams and Raffle at Dayton
* Dayton AMSAT/TAPR Banquet ticket sales close 12 May
* AMSAT Board of Directors Nominations
* Ronald A. Parise, WA4SIR, SK
* 5th Annual Cubesat Summer Workshop
* ARISS Status - 5 May 2008
SB SAT (AT) AMSAT $ANS-132.01
AMSAT Engineering Teams and Raffle at Dayton
AMSAT News Service Bulletin 132.01
From AMSAT HQ SILVER SPRING, MD.
May 11, 2008
To All RADIO AMATEURS
BID: $ANS-132.01
Representatives from the AMSAT Engineering teams will be available to talk
with
you about their projects at the 2008 Dayton
Hamvention. All of the teams are looking for
dedicated individuals that would like to
participate. The AMSAT Engineering area will occupy booths
444-445 adjacent to the other AMSAT booths 446-449.
We have the entire row this year.
Friday
ACP
Michelle, W5NYV 0900 - 1200 ACP Ground segment
Matt, N2MJI 1300-1500, 1600-1700 ACP satellite segment
SuitSat-2
Tom, K3IO 1000-1100, 1200-1300, 1400-1500
Lou, W5DID 1100-1200, 1300-1400, 1600-1700
P3E & Phase 4
Rick, W2GPS 1100-1200, 1300-1400, 1500-1600
Eagle
Barry, WD4ASW 1400-1500, 1700-1800
Digital encoding
Phil, KA9Q 1000-1200, 1500-1600
Saturday
ACP
Michelle, W5NYV 1300 - 1600 ACP Ground segment
Matt, N2MJI 1300-1500, 1600-1700 ACP satellite segment
SuitSat-2
Tom, K3IO 1200-1300, 1600-1700
Lou, W5DID 1300-1600
P3E & Phase 4
Rick, W2GPS 1300-1400, 1500-1600
Eagle
Barry, WD4ASW 1200-1300, 1400-1500
Digital encoding
Phil, KA9Q 1200-1300, 1400-1500
Sunday
SuitSat-2
Tom, K3IO 0900-1000
Lou, W5DID 1000-1100
Eagle
Barry, WD4ASW 1000-1200
P3E & Phase 4
Rick, W2GPS 1000-1100
Eagle
Barry, WD4ASW 1000-1200
============================================================
Raffle for complete LVB Tracker Box
We will have a raffle for a complete LVB Tracker Box, donated by David Bern,
W2LNX. The tickets will be $5 apiece. The
drawing will be held Saturday afternoon at
1700. Come by the AMSAT booth and enter the raffle.
We will also have a limited number of complete Tracker boxes available at the
booth, first come first serve.
[ANS thanks Gould, WA4SXM, for the above information]
/EX
SB SAT (AT) AMSAT $ANS-132.02
Dayton AMSAT/TAPR Banquet ticket sales close 12 May
AMSAT News Service Bulletin 132.02
From AMSAT HQ SILVER SPRING, MD.
May 11, 2008
To All RADIO AMATEURS
BID: $ANS-132.02
AMSAT/TAPR Banquet ticket sales close at noon Monday, 12 May 2008
Tickets for the joint AMSAT/TAPR Banquet on Friday night, 16 May in Dayton
will
close at noon EDT Monday, 12 May 2008. You can
call Martha at the AMSAT office (888) 322-6728 (in
the US) or from all other locations call (301)
589-6062 to purchase your ticket. Or you can
send an email to martha(AT)amsat.org with you
telephone number and she will call you to take the
credit card information. Don't miss out on this popular event.
[ANS thanks Gould, WA4SXM, for the above information]
/EX
SB SAT (AT) AMSAT $ANS-132.03
AMSAT Board of Directors Nominations
AMSAT News Service Bulletin 132.03
From AMSAT HQ SILVER SPRING, MD.
May 11, 2008
To All RADIO AMATEURS
BID: $ANS-132.03
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 5 current individual members to nominate
an AMSAT member for the position. A director serves for a period
of two years. Three director's terms expire this year: Tom
Clark K3IO, Lou McFadin W5DID, Bob McGwier N4HY. Nominations
must be in writing and mailed to: AMSAT, 850 Sligo Ave #600,
Silver Spring, MD 20910. They can arrive no later than June 12,
2008.
[ANS thanks Martha for the above information]
/EX
SB SAT (AT) AMSAT $ANS-132.04
Ronald A. Parise, WA4SIR, SK
AMSAT News Service Bulletin 132.04
From AMSAT HQ SILVER SPRING, MD.
May 11, 2008
To All RADIO AMATEURS
BID: $ANS-132.04
It is with a heavy heart that I announce the passing of a great friend,
colleague and fellow ham radio operator. Dr. Ronald A. Parise, WA4SIR, left
this Earth today, Friday May 9, 2008 after a very long and courageous battle
with cancer.
Ron Parise was--and continues to be--an inspiration to countless students,
ham radio operators, and friends the world over. His accomplishments were
many, including: space explorer, pioneer, astrophysicist, pilot, ham radio
operator, avionics and software expert, inspirational speaker and motivator,
student satellite mentor, husband, father, and friend. While he certainly
did some truly extraordinary things in his lifetime, Ron Parise is best
known and cherished for keeping family and friends first?and for this, we
will miss him most.
Ron flew as a payload specialist on two Space Shuttle missions: STS-35 on
the Space Shuttle Columbia in December 1990 and STS-67 on the Space Shuttle
Endeavour in March 1995. These two missions, called ASTRO-1 & 2
respectively, carried out Ultraviolet and X-ray astronomy observations. He
logged over 614 hours and 10.6 million miles in space. Ron and his crew
members on ASTRO-1 became the first astronomers to operate a telescope from
space, making hundreds of observations during the mission. His personal
contributions to these two missions have provided scientists with an
unprecedented view of our universe, expanding our understanding of the
birth, life and death of stars and galaxies.
Ron was also the ultimate ham radio operator?in space and on the ground.
First licensed when he was 11, Ron kept the amateur radio hobby at the
forefront of everything he did?including his operations from space. During
his two Space Shuttle flights, he talked to hundreds of hams on the ground,
giving new meaning to the phrase the ?ultimate DX-pedition?. He was
instrumental in guiding the development of a simple ham radio system that
could be used in multiple configurations on the Space Shuttle. As a result,
his first flight on STS-35 ushered in the ?frequent flyer? era of the
Shuttle Amateur Radio Experiment (SAREX) payload. He was the first ham in
space to operate packet radio. And his flight pioneered the telebridge
ground station concept to enable more schools to talk to Shuttle crew
members despite time and orbit constraints. In his two shuttle flights, he
inspired countless students to seek technical careers and he created
memories at the schools and communities that will never be forgotten.
Ron?s love for the amateur radio hobby and his love of inspiring students
continued well beyond his two Shuttle flights. During the formation of the
Amateur Radio on the International Space Station (ARISS) program, Ron was a
tremendous resource to the newly forming international team. I know of many
instances where Ron?s wisdom and sage advice was instrumental in helping our
international team resolve issues when we reached critical technical or
political roadblocks. And he was a key volunteer in the development of the
ham radio hardware systems that are now on-board ISS. The ARISS team is
deeply indebted to WA4SIR for his leadership, technical advice and
tremendous vision.
Ron worked hand-in-hand with the students at the Naval Academy and
Embry-Riddle Aeronautical University on the development of their student
satellites. He helped develop Radio Jove?a student educational project to
listen to the radio signals emanating from Jupiter. And he spoke at
numerous schools over the years, inspiring them to pursue careers in
science, math and technology.
I feel blessed to have had Ron as a friend, colleague, ham buddy and mentor.
He gave so much, cheerfully, to our collective hobby and was always there
with the right answer no matter the topic. I will miss him dearly.
In an effort to continue Ron?s tireless work to inspire the next generation,
the Parise family has set up a scholarship fund in Ron?s honor. The
scholarship is for students pursuing technical degrees at Youngtown State
University, where Ron received his Bachelors of Science degree. In lieu of
flowers, those interested are welcome to send donations to the Dr. Ronald A.
Parise Scholarship Fund, Youngstown State University, One University Plaza,
Youngstown, Ohio 44555.
On behalf of AMSAT and the ARISS International team, I would like to extend
our collective condolences to the Parise family and to all Ron?s friends.
Our thoughts and prayers are with you.
And to Ron Parise, WA4SIR SK: Our sincerest 73's and 88's?may your
exploration spirit live on in us all!!
[ANS thanks Frank, KA3HDO, for the above information]
/EX
SB SAT (AT) AMSAT $ANS-132.05
5th Annual Cubesat Summer Workshop
AMSAT News Service Bulletin 132.05
From AMSAT HQ SILVER SPRING, MD.
May 11, 2008
To All RADIO AMATEURS
BID: $ANS-132.05
The 5th annual Cubesat summer workshop for 2008 is fast approaching.
Once again, the CubeSat Summer Workshop will be held the weekend before the
annual Small Satellite Conference at the campus of Utah State University in
Logan, Utah, USA. This is yet another opportunity for CubeSat developers
from all over the world to get together to share ideas and knowledge gained
from developing picosatellites. Speakers, discussion panels, and group
sessions provide valuable insight and networking opportunities for all range
of developers. Visit www.cubesat.org for registration and details (the
Summer Workshop 2008 section is currently under construction and will be
updated).
If you have something to share with the CubeSat community? We are constantly
looking for speakers and presentations that will inspire and support
developers. If you are interested in presenting at the upcoming Summer
Workshop, submit abstracts to us by visiting www.cubesat.org. Deadlines are
posted below.
*CubeSat Developers' Summer Workshop 2008*
August 9th ? 10th
Utah State University
Logan, Utah USA
Registration Deadline: August 1st, 2008
Abstract Submittal Deadline: June 20th, 2008
Abstract Acceptance Notification: July 4th, 2008
[ANS thanks Bryan for the above information]
/EX
SB SAT (AT) AMSAT $ANS-132.06
ARISS Status - 5 May 2008
AMSAT News Service Bulletin 132.06
From AMSAT HQ SILVER SPRING, MD.
May 11, 2008
To All RADIO AMATEURS
BID: $ANS-132.06
1. ARISS Space Day Contact Successful
On Saturday, May 3, the National Air and Space
Museum (NASM) in Washington, D.C.
participated in Space Day 2008, celebrating the 50th anniversary of NASA and
NASA?s achievements through space exploration. Radio Amateur Satellite
Corporation (AMSAT) and Amateur Radio on the
International Space Station (ARISS)
members manned an activity station during the event. A highlight of the event
was an ARISS contact made possible through the assistance of telebridge
station
NN1SS in Greenbelt, Maryland. Thirty questions were put to Garrett Reisman,
KE5HAE, live, by ten children as approximately 200 gathered in the gallery.
The
audio was fed into the EchoLink AMSAT (101 377) and JK1ZRW (277 208)
Conference
Room servers and received 25 connections. It was also fed into the IRLP
Discovery Reflector 9010, receiving 4 connections from Canada and the U.S.
Additionally, the event was taped by the NASM staff. Space Day draws crowds of
thousands annually.
2. Astronaut Training Status
Bob Thirsk, VA3CSA, participated in a successful Amateur Radio on the
International Space Station (ARISS) training session on Thursday, May 1. He
answered questions posed to him by students at the Cedarview Middle School in
Ottawa, Ontario, Canada.
Expedition 19 back-up crew member Chris Hadfield, KC5RNJ/VA3OOG, also attended
an ARISS operations training session on Friday, May 2.
[ANS thanks Carol, KB3LKI, for the above information]
/EX
In addition to regular membership, AMSAT offers membership in the President's
Club. Members of the President's Club, as sustaining donors to AMSAT Project
Funds, will be eligible to receive additional benefits. Application forms are
available from the AMSAT Office.
73,
This week's ANS Editor,
Lee McLamb, KU4OS
ku4os at amsat dot org
------------------------------
Message: 6
Date: Sun, 11 May 2008 12:07:53 +0900
From: Mineo Wakita <ei7m-wkt(AT)asahi-net.or.jp>
Subject: [amsat-bb] AAUSAT-II FFSK/MSK recorded
To: amsat-bb(AT)amsat.org
Message-ID: <3EC8B314344329ei7m-wkt(AT)asahi-net.or.jp>
Content-Type: text/plain; charset=us-ascii
WAV 5 seconds, 01:23-01:34UTC, 11 May 2008
http://www.ne.jp/asahi/hamradio/je9pel/aausatii.htm
http://www.ne.jp/asahi/hamradio/je9pel/80511aau.wav
Sat.callsign: OZ2CUB
437.425 MHz FFSK/MSK
1200, 9600bps (1200 standard)
AX.25 FM CW TLM (only in safe mode)
Aalborg University, Denmark
http://aausatii.space.aau.dk/eng
------------------------------
Message: 7
Date: Sat, 10 May 2008 22:05:16 -0700
From: John Mock KD6PAG <kd6pag(AT)amsat.org>
Subject: [amsat-bb] Portland road trip results
To: amsat-bb(AT)amsat.org
Message-ID: <E1Jv3kK-0002FY-Q0(AT)sebastopol.fdns.net>
I sent out about 45 cards or envelopes this week, mostly for the Portland
road trip in March which represented over 100 QSOs and a total of about
150 grid squares given out. A large proportion of contacts were made
from grid square boundaries (as located by GPS readings), and like last
summer's road trip, one grid square corner was activated. These, alas,
were not entered into Logbook of the World, as LoTW expects grid square
designators to be either 4 or 6 letters (as opposed to CN70wx/CN71wa).
19 grid squares were activated (CM89, CN70, CN71, CN72, CN73, CN74, CN75,
CN80, CN81, CN85, CN86, CN90, CN91, CN92, CN93, CN94, CN95, DN02, DN03)
on this trip. The top operators (with grid square counts) were
W6ASL(14), N6PAA(13), K6YK(10), W6HF(9), W6ZQ(9), KG7EZ(8), N7JK(8),
W7JPI(8), VE7JRX(7), KK5DO(5), N4QWZ(5), AI7W(5) and K7WIN(5).
If i worked you, then you should be getting your cards in the next week
(or maybe two in Mexico or Canada), assuming your address hasn't changed
recently.
If you don't receive any soon, or i seem to have missed a QSL, then feel
free to send me a card and i'll check my recordings. You can also e-mail
me. On a few occasions, i could not hear my own downlink well and given
your card, i may be able to confirm contacts that were not clear enough
to send out unsolicited cards.
Next trip is likely to be to Seattle towards the end of the month, albeit
most contact are likely to be made on the return trip during the first week
of June. Details when i know more.
-- KD6PAG (Networking Old-Timer, Satellite QRPer)
------------------------------
Message: 8
Date: Sun, 11 May 2008 12:20:27 +0100
From: "john heath" <g7hia(AT)btinternet.com>
Subject: [amsat-bb] Delfi Not Heard
To: "amsat" <amsat-bb(AT)amsat.org>
Message-ID: <000801c8b359$041ed590$4001a8c0(AT)MainPC>
Content-Type: text/plain; charset="iso-8859-1"
Listened for Delfi on the 11:00 UTC pass over the UK.
Using day 128 keps object No. 32789
Nothing heard on 930 or 870
Possibly a problem at my station, hope the sat is OK.
73 John G7HIA
------------------------------
Message: 9
Date: Sun, 11 May 2008 07:31:36 -0400
From: "John Price" <n4qwf1(AT)gmail.com>
Subject: [amsat-bb] AO-16 report
To: amsat-bb(AT)amsat.org
Message-ID:
<8d1b8e80805110431p7be67404m6c61e646b7b110a6(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Heard in digital mode 11:29z 5/11/08 from FM07. Elevation 13 degrees west.
--
N4QWF Amateur Radio Operator
AO-7,AO-27,SO-50,AO-51,VO-52
Internet N4QWF(AT)AMSAT.ORG
Formerly KC4AHW VK3FEZ
Amsat Member #27845
DXCC #33,478
VUCC SAT #135
WAS SAT #296
51 on 51 #13
LON -79.25 LAT 37.45 Grid FM07
>From the Foothills of the Blueridge
*Life should not be a journey to the grave with the intention of
arriving safely in a pretty and well preserved body, but rather to
skid in broadside, thoroughly used up, totally worn out, and loudly
proclaiming - "WOW, What a ride!"
------------------------------
Message: 10
Date: Sun, 11 May 2008 07:52:54 -0400
From: "John Price" <n4qwf1(AT)gmail.com>
Subject: [amsat-bb] AO-16 report
To: "amsat-bb(AT)amsat.org" <amsat-bb(AT)amsat.org>
Message-ID:
<8d1b8e80805110452j22899c7cga9e2ecbb003ff363(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Heard in digital mode 5/11/08 (AT)11.30z from FM07. Elevation 13 deg. west
--
N4QWF Amateur Radio Operator
AO-7,AO-27,SO-50,AO-51,VO-52
Internet N4QWF(AT)AMSAT.ORG
Formerly KC4AHW VK3FEZ
Amsat Member #27845
DXCC #33,478
VUCC SAT #135
WAS SAT #296
51 on 51 #13
LON -79.25 LAT 37.45 Grid FM07
>From the Foothills of the Blueridge
*Life should not be a journey to the grave with the intention of
arriving safely in a pretty and well preserved body, but rather to
skid in broadside, thoroughly used up, totally worn out, and loudly
proclaiming - "WOW, What a ride!"
------------------------------
Message: 11
Date: Sun, 11 May 2008 07:31:10 -0500
From: "Stefan Wagener" <stefan_wagener(AT)hotmail.com>
Subject: [amsat-bb] Re: Delfi Not Heard
To: "'john heath'" <g7hia(AT)btinternet.com>, "'amsat'"
<amsat-bb(AT)amsat.org>
Message-ID: <BAY130-DAV13C46327C0410CB32020EBF6CD0(AT)phx.gbl>
Content-Type: text/plain; charset="us-ascii"
Hi John,
Delfi was very active last night on the ascending passes with intermittent
breaks in TX. Copied several hundreds of packets. No surprises in the
telemetry (as far as I can tell).
Stefan, VE4NSA
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of john heath
Sent: May-11-08 6:20 AM
To: amsat
Subject: [amsat-bb] Delfi Not Heard
Listened for Delfi on the 11:00 UTC pass over the UK.
Using day 128 keps object No. 32789
Nothing heard on 930 or 870
Possibly a problem at my station, hope the sat is OK.
73 John G7HIA
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Message: 12
Date: Sun, 11 May 2008 21:57:04 +0900
From: Mineo Wakita <ei7m-wkt(AT)asahi-net.or.jp>
Subject: [amsat-bb] AAUSAT-II FFSK/MSK recorded #2
To: amsat-bb(AT)amsat.org
Message-ID: <40C8B36682F65Cei7m-wkt(AT)asahi-net.or.jp>
Content-Type: text/plain; charset=us-ascii
WAV 4 minutes, 12:14-12:26UTC, 11 May 2008
2.7MB 88kbps 8bits monaural 11kHz PCM
http://www.ne.jp/asahi/hamradio/je9pel/aausatii.htm
http://www.ne.jp/asahi/hamradio/je9pel/80511aa2.wav
AAUSAT-II are now transmitting the beacon every 30 seconds.
We can not decode these beacon because of the weak signals.
------------------------------
Message: 13
Date: Sun, 11 May 2008 16:57:59 +0200
From: Nico Janssen <hamsat(AT)xs4all.nl>
Subject: [amsat-bb] Delfi-C3 information
To: amsat-bb(AT)amsat.org
Message-ID: <48270977.2000400(AT)xs4all.nl>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi all,
For those of you who are monitoring the Delfi-C3 telemetry, here is
some information on some of the abbreviations used in the RASCAL
telemetry decoding software:
- OBC On Board Computer
- OBM On Board MORON
- MORON Malfunctioning OBC Recovery OptioN
- ComBo Combination Board
- EPS Electrical Power Subsystem
- MeBo Measurement Board
- RAP Radio Amateur Platform
- ICB InterConnect Board
The average RAP 2 beacon frequency is around 145.9318 MHz. The actual
frequency depends on the temperature of the transmitter. Just after
leaving eclipse, when the transmitter is cold, the downlink frequency
is 145.9323 MHz. While the transmitter warms up, the frequency drifts
down to about 145.9313 MHz before entering eclipse again. So during
an ascending pass, this downward drift adds some 500 Hz to the
total observed doppler shift.
I think by now everybody will agree that Delfi-C3 is object 32789,
or 2008-021G.
73,
Nico PA0DLO
------------------------------
Message: 14
Date: Sun, 11 May 2008 13:01:31 -0400
From: "Michael Tondee" <mat_62(AT)netcommander.com>
Subject: [amsat-bb] bias tee circuits and components for 2.4 GHz
downconverter
To: "amsat-bb" <amsat-bb(AT)amsat.org>
Message-ID: <000901c8b388$a9cabf20$6500a8c0(AT)w4hij1>
Content-Type: text/plain; charset="iso-8859-1"
I have a Pacific Monolithics surplus MMDS downconverter here that I would
like to get up and running on S-band. It has an 122 MHz IF and I want to whip
up a bias -tee to power it. I've looked at the circuits in the Satellite
Experimeters handbook and my problem is finding an rf choke of the right value
that is readily available in my area. Shouldn't I be able to just wind
something with an air core out of magnet wire or something similar that will
do the trick? According to the circuit I have I'd need about a 1.5 uh choke
for 146 Mhz and it isn't critical so that's probably close enough for my
downconverters IF frequency. I hate to spend shipping charges to get one
little choke or ferrite core for winding a choke on here. Most places have a
minimum order and I don't need anything else at this time. I'd also welcome
links to any other circuits that might be out there.
Thanks,
Michael, W4HIJ
------------------------------
Message: 15
Date: Sun, 11 May 2008 15:37:52 +0000
From: k9jkm(AT)comcast.net (JoAnne Maenpaa)
Subject: [amsat-bb] Re: Delfi Not Heard
To: "amsat" <amsat-bb(AT)amsat.org>
Message-ID:
<051120081537.13165.482712D00005AE680000336D2216557996030506C705(AT)comc
ast.net>
Content-Type: text/plain
John mentioned ...
> Nothing heard on 930 or 870
> Possibly a problem at my station, hope the sat is OK
One quick way to test your delfi setup is listen for AO-7 on ~145.950 and VO-
52 on ~145.900. Delfi operating on 145.930 is right in between.
--
73 de JoAnne K9JKM
k9jkm(AT)amsat.org
------------------------------
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End of AMSAT-BB Digest, Vol 3, Issue 237
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