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CX2SA > SATDIG 22.08.11 17:49l 932 Lines 28114 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Yes, more ARISSat-1 telemetry (Greg D.)
2. TAPR/ARR DCC (Digital Communications Conference), Baltimore,
MD, 9/16-18 (Mark Thompson)
3. SSB electronics EMAIL (Alvaro Gaviria)
4. Re: satellite tracking problem (stb) (George Henry)
5. ARISSat-1 message question? (Francisco Costa, CT1EAT)
6. Re: AMSAT at Chaos Communication Camp 2011 - with ARISSAT-1
(Patrick Strasser OE6PSE)
7. ARISSAT & FCD dongle I/Q recording (Bernard f6bvp)
8. Fibreglass tube for G5500? (Chris Bloy)
9. Re: Flex 5000 (Nick Pugh K5QXJ)
10. Keps (Carl Rimmer W8KRF)
11. Re: Seriously Get Over It! (Dee)
12. Re: Fibreglass tube for G5500? (i8cvs)
13. Re: Seriously Get Over It! (John Becker)
14. Re: Fibreglass tube for G5500? (Alan P. Biddle)
15. Re: Turn off AGC when receiving BPSK-1000 (Gregg Wonderly)
16. ARISSat-1 CW2 beacon active (Francisco Costa, CT1EAT)
----------------------------------------------------------------------
Message: 1
Date: Sun, 21 Aug 2011 20:13:26 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Yes, more ARISSat-1 telemetry
Message-ID: <BLU133-W1577EB63D3A79B07DF8EE0A92F0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi folks,
More from a couple of passes over CM98
01:05z pass start, 8/22/11 66 degree pass
Apparently in high power mode.
MET ?? >QSB> probably 45min
IHU Temp = +31c
Control Panel temp = +38c
Battery = 36.06v
Current = -8ma
MET 47 min
IHU Temp = +32c
Control Panel temp = +39c
Battery = 35.94v
Current = - ?? <QSB>
MET 49 min
IHU temp = +32c
Control Panel temp = +40c
Battery = 35.94v
Current = -8ma
After the kids' chanting, the satellite turned off for 2 min.
SSTV, greetings, etc...
MET 54 min
IHU Temp = +34c
Control Panel temp = +24c (did I hear that right? Was +40 a few minutes
earlier! Need parity bits on the eardrums
Battery = <QSB>
Current = -20ma
After more greetings and a live SSTV picture the satellite turned off again
through LOS
---------------------------
Next pass: 17 degrees
02:38z start, 8/22/11
MET 47
IHU Temp +32c
Control Panel temp = +44c
Battery = 35.93v
Current = -20ma
MET 49
IHU Temp = +33c
Control panel temp = 45c
Battery = 35.90v
Current = -16ma
Greg KO6TH
------------------------------
Message: 2
Date: Sun, 21 Aug 2011 20:32:50 -0700 (PDT)
From: Mark Thompson <wb9qzb_groups@xxxxx.xxx>
To: "digitalradio@xxxxxxxxxxx.xxxx <digitalradio@xxxxxxxxxxx.xxx>,
"DigitalModes@xxxxxxxxxxx.xxxx <DigitalModes@xxxxxxxxxxx.xxx>
Cc: "ARESv@xxxxxxxxxxx.xxxx <ARESv@xxxxxxxxxxx.xxx>,
"amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] TAPR/ARR DCC (Digital Communications Conference),
Baltimore, MD, 9/16-18
Message-ID:
<1313983970.52017.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
The 30th Annual?
ARRL and TAPR Digital Communications Conference
September 16-18, 2011 - Baltimore, MD
http://www.tapr.org/dcc
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- -
Final preparations are being made for the 30th Annual ARRL and TAPR Digital
Communications Conference.? Are you ready?? Here's a check list to help you
out:
Check List:
- Have you booked your travel?
- Have you booked your hotel room? (see below for special rates and deadline)
- Have you
registered for the DCC? Go to http://www.tapr.org/dcc to sign up.
Below is the list of submitted papers. The speakers schedule is being
assembled. We have a an exciting list of paper talks, guest speakers, and
Introductory Seminars.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- -
Hotel:
Four Points by Sheraton BWI Airport, Baltimore, MD.
A block of rooms at the special DCC room rate of $90.00 single/double. This
special rate is good until August 25, 2011 after that you will pay the
regular room rate. To book your room, use the reservation link below or call
the hotel directly (phone numbers below) and mention the group code DCC
(Digital Communications Conference) when making reservations. Be sure to
book your rooms early!
Four Points by Sheraton BWI Airport
7032 Elm Road
Baltimore, Maryland 21240
Reservations: 1-800-368-7764 Phone: 410-859-3300
- - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Submitted Papers:
DATV-express: A Lower Cost Approach to DATV
Charles Brain, G4GUO and Ken Konechy, W6HHC
A Shadow Ad-Hoc TEMPn-N Network
Bob Bruninga, WB4APR
CW Mode for the NUE-PSK Digital Modem
Dave Collins, AD7JT and George Heron, N2APB
APRS and the Android Smartphone
Sagar Gupta, KC2VSG
Practical Implementations of Bluetooth in Microcontroller Circuits
John A. Hansen, Ph.D. W2FS
Public Service Event APRS Web Mapping for Wireless Devices
Ted Jacobson, W8KVK and Rob Jacobson, KB9AFT
WRC-12 Agenda Item 1.19: Regulatory Considerations for Software Defined and
Cognitive Radio Systems
Brennan Price, N4QX
More experiments with Delay and Disruption Tolerant Networking over AX.25
Networks
John Ronan, EI7IG, Darren Long, G?HHW and Kristian Walsh
A Further Comparison of Different TCP/IP and DTN
Protocols over the D-STAR Digital Data Mode
John Ronan, EI7IG and Cathal O?Connor
Codec 2 ? Open Source Speech Coding at 2400 bit/s and Below
David Rowe, VK5DGR
PhoneSat: Balloon Testing Results
Mike Safyan
Modulation ? Demodulation Software Radio (MDSR) Software for the BiLiF
computer interface
Alex Schwarz, VE7DXW
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- -
Introductory Talks (Saturday):
Introduction to Digital Voice
Introduction to Digital Modes
Introduction to D-STAR Digital Voice & Data
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- -
Demo Room:
Be sure to bring your projects to show in the demo room. Even if you are not
speaking. Each year at the DCC a separate (and lockable) room is provided
for people to bring and show off their latest projects. Tables and power
will be provided. Bring
your equipment and display for all to see, learn, and ask questions about.
Be sure to bring a small sign and/or flyer naming and describing your project.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- -
Saturday Night Banquet Speaker:
The Village TELCO
David Rowe, VK5DGR
There are now billions of mobile phones all over the world. However in many
developing countries, mobile phones are simply too expensive to use. For
example, in a country where people earn $1.50/day, a phone call can cost 21
cents/minute. This is a huge tax on communications.
David Rowe, VK5DGR, will describe how a community of people from around the
world set out to fix this problem, using a mix of Wi-Fi and open source
software. The result is the Village Telco - a DIY telephone company that
anyone can set up.
A Village Telco is constructed from a network of "Mesh Potatoes" - small
Wi-Fi boxes that are
mounted on homes in a village. They form a mesh network, relaying telephone
calls for each other. Each Mesh Potato connects to a regular telephone
inside village homes. Phone calls on the network are free. A local person in
the Village can be trained in a few hours to set up and maintain the network.
To build the Village Telco we borrowed many ideas from Ham Radio, such as
sharing hardware designs and community networks.
The talk will include real world stories of how Village Telcos are helping
people in several developing countries, and explain why a simple phone call
that we take for granted can be so important.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- -
Sunday Seminar:
Stay tuned.? We are assembling an exciting seminar.? Details will be
released this week.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- -
Schedule:
Friday
8:15 AM Conference Registration and Demonstration Room Open
9:00 AM Welcome and Introductions
9:30 AM Technical Presentations
Noon Lunch
1:00 PM Technical Presentations
6:00 PM Break
7:00 PM Social
11:00 PM Demonstration Room Closed
Saturday
7:15 AM Conference Registration and Demonstration Room Open
8:00 AM Welcome
8:15 AM Technical Presentations
Noon Lunch
1:00 PM Technical Presentations
3:15 PM TAPR Membership Meeting
6:00 PM Break
7:00 PM Dinner Banquet
11:00 PM Demonstration Room Closed
Sunday
8:00 AM to Noon Sunday Seminar
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- -
We hope to see you there!
73, Steve N7HPR
President TAPR
------------------------------
Message: 3
Date: Sun, 21 Aug 2011 22:49:37 -0500
From: "Alvaro Gaviria" <algaviri1@xxx.xxx.xx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SSB electronics EMAIL
Message-ID: <000d01cc607e$83e48880$8bad9980$@xxx.xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
Hello all
I am looking for the SSB electronic USA email
I need a spare GaFet MGF1302 for my SSB 7000 so I need contact them
73
HK4MKE
algaviri1@xxx.xxx.xxx
------------------------------
Message: 4
Date: Sun, 21 Aug 2011 23:08:35 -0500
From: "George Henry" <ka3hsw@xxx.xxx>
To: <wstw@xxxx.xxx>, <AMSAT-BB@xxxxx.xxx>
Cc: terrig@xxxxx.xxx.xxx wstw@xxxx.xxx
Subject: [amsat-bb] Re: satellite tracking problem (stb)
Message-ID: <6F6EF433A48E40BE9D6CE113062FA452@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I am not familiar with either Nova or the Uni-trac 2003, but I can say that
split mode is the only way for the 910H to handle doppler a satellite such
as the ISS with the uplink & downlink in the same band. For V/U and U/V
satellites, it should put the uplink on the sub-band, while the downlink
appears on the main band.
George, KA3HSW
----- Original Message -----
From: <wstw@xxxx.xxx>
To: <AMSAT-BB@xxxxx.xxx>
Cc: <terrig@xxxxx.xxx.xx>; <wstw@xxxx.xxx>
Sent: Saturday, August 20, 2011 8:40 PM
Subject: [amsat-bb] satellite tracking problem (stb)
> using the uni_trac 2003 control my icom 910h xcvr switches between vfo a
> and vfo b (via the split function in the radio when) I try to track the
> iss. Is there a known fix for this satellite and any other amateur radio
> satellites. I am having a problem with nova allowing the 2003 to tune the
> 910h radio as well as control the az el function of my g5500 rotors. I
> have talked with Mr. John Bealand just this week about these problems and
> his suggestion was to post them on the amsat-bb. help on how to overcome
> these problems is greatly appreciated, Al T.
> ____________________________________________________________
> Penny Stock Jumping 3000%
> Sign up to the #1 voted penny stock newsletter for free today!
> http://thirdpartyoffers.juno.com/TGL3141/4e5062613ba837a71c5st03vuc
> _______________________________________________
> 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: 5
Date: Mon, 22 Aug 2011 00:04:38 +0100
From: "Francisco Costa, CT1EAT" <listas_ct1eat@xxxx.xx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ARISSat-1 message question?
Message-ID: <899FE2543E0C463B810EC02EE9C0C9AF@xxxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi
I have a question about ARISSat-1 msgs:
they are sent in any special order, or random?
I'm asking this because so far I've heard more
than 14 different msg in 10 languages, but not mine.
Is this coincidence, or just bad luck?
Should I wait, or apply for other language secret word?
Thanks in advance for reply.
73 F.Costa, CT1EAT
http://ct1eat.no.sapo.pt
P.S. Congrats to all ARISSat team. This bird bring
me back to amateur sats :o)
------------------------------
Message: 6
Date: Mon, 22 Aug 2011 10:44:00 +0200
From: Patrick Strasser OE6PSE <oe6pse@xxxxxxxx.xxxx.xx>
To: Amsat - BBs <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AMSAT at Chaos Communication Camp 2011 - with
ARISSAT-1
Message-ID: <4E5216D0.40006@xxxxxxxx.xxxx.xx>
Content-Type: text/plain; charset=UTF-8
Am 2011-08-14 00:20, schrieb Trevor .:
> Today Mario Lorenz DL5MLO from AMSAT-DL gave a presentation on Amateur
Radio Space Communications as part of the Hacker Space Program track at the
Chaos Communication Camp 2011.
>
> Mario's talk titled 'From OSCAR 1 to Mars and beyond - Amateur Space
Exploration ? The last 50 years, now, and the future'
> Hacker Space Program track
>
http://events.ccc.de/camp/2011/Fahrplan/track/Hacker%20Space%20Program/index.e
n.html
>
> Chaos Communication Camp 2011
> http://events.ccc.de/camp/2011/
The video of the talk can be viewed at
http://media.ccc.de/browse/conferences/camp2011/cccamp11-4594-from_oscar_1_to_
mars_and_beyond-en.html
The day before I was tracking with him ARISSAT-1, Mario with his Funcube
Dongle, and we were able to track a nice non-eclipsed pass. Mario could
successfully decode telemetry, but I do not have his data.
73
Patrick
OE6PSE
--
Engineers motto: cheap, good, fast: choose any two
QTH: JN77rb http://sat.mur.at/
Patrick Strasser OE6PSE <oe6pse at wirklich priv at>
------------------------------
Message: 7
Date: Mon, 22 Aug 2011 10:44:21 +0200
From: Bernard f6bvp <f6bvp@xxxx.xx>
To: "'AMSAT-BB'" <AMSAT-BB@xxxxx.xxx>, "AMSAT.FR"
<amsat-france@xxxxxxxxxxxx.xx>, funcube@xxxxxxxxxxx.xx.xxx
arp75@xx.xxxx.xx
Cc: Charles Scharlau <charles.scharlau@xxxxx.xxx>
Subject: [amsat-bb] ARISSAT & FCD dongle I/Q recording
Message-ID: <4E5216E5.4000109@xxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hello,
Bonjour,
ARISSAT satellite was received 2011-08-21 around 1906 UTC via FCD dongle
on a vertical VHF antenna (+13dB), 35 metres long coaxial feedline and
indoor SSB electronics preamp. Location in Paris, JN18DV.
I/Q signal were saved using Audacity (stereo 96000 samples/sec 16 bits
.wav file. Size 45MB)
http://f6bvp.free.fr/ARISSAT-FCD-dongle/HDSDR_20110821_190634Z_145922kHz_RF.wa
v
SpectraVue replay of .wav file analysis screen capture
http://f6bvp.free.fr/ARISSAT-FCD-dongle/ARISSAT_FCD_20110821_1906UTC_ORB_272_J
N18DV.png
73s de Bernard, f6bvp
------------------------------
Message: 8
Date: Mon, 22 Aug 2011 10:01:49 +0100
From: "Chris Bloy" <chris@xxxxxxxxxxx.xx.xx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Fibreglass tube for G5500?
Message-ID: <023601cc60aa$2230ebc0$6692c340$@xxxxxxxxxxx.xx.xx>
Content-Type: text/plain; charset="iso-8859-1"
Hi All,
Does anyone in the UK know where the best place to buy fibreglass antenna
pole for the G5500?
I have two WiMO X-Quads mounted currently on a 6ft aluminium pole, but they
are back mounted and are quite heavy on the rotator (Forward motion!)
So, I was wondering, can I get say a 1 ? fibreglass pole and then slip the
slightly small aluminium pole inside to give extra strength without
affecting the radiation pattern?
I have google?d a couple of places and it appears I need to get tubing but
not sure if anyone has any experience in this department?
Many Thanks,
Chris ? M0DQO
------------------------------
Message: 9
Date: Mon, 22 Aug 2011 04:57:24 -0500
From: "Nick Pugh K5QXJ" <quadpugh@xxxxxxxxx.xxx>
To: <APBIDDLE@xxxxxxx.xxx>
Cc: support@xxxxxxxxxx.xxxx 'AMSAT-BB' <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Flex 5000
Message-ID: <053401cc60b1$e523d370$af6b7a50$@xxx>
Content-Type: text/plain; charset="us-ascii"
Alan, Dudley el al
Here is what I am experiencing using ver 2.22
1. When I transmit on VFO B I get motor boating in the open
receiver. The fix is to always put the uplink in vfo b. The
normal satpc32 in vu mode loads the transmit in vfo b. There is a special
version of satpc32 that will do that but it does not have the
voice announce feature.
2. When changing from uv to vu mode generates error and it takes
extra key strokes to fix that.
3. I get desensing in the vu mode and the agc level has no effect
reducing power helps.
4. The Flex does not load the modes from satpc32 correctly.
5. In the FM mode I only get a max of 20 watts out in previous
version I got 60 watts output.
6. The VAC does not get input from vfo b. The VAC should be
selectable both on transmit and receive.
Comment
I am a little frustrated having paid a premium for a satellite rig
and 6 month later its performance does not yet match its analog radios
equivalent performance. I appreciate all the help and support that Flex
especially Dudley has given to me and I remain hopeful that they
will fix the remaining issues.
nick
-----Original Message-----
From: Alan P. Biddle [mailto:APBIDDLE@xxxxxx.xxxx
Sent: Sunday, August 21, 2011 8:06 AM
To: 'Nick Pugh K5QXJ'
Cc: AMSAT-BB
Subject: RE: [amsat-bb] Flex 5000
Nick,
Actually, it works pretty well with the latest version. Set up SATPC32 as
for a TS-2000. It is neat to see a signal in the transponder, drag it to
the passband, and you are ready to go.
A few comments. The Satellite Mode in the SATPC32 setup does nothing,
either way, due to the way the Flex is set up. Also, it is absolutely
critical set the AGC-T properly. Set too high, and it appears to have a bad
desense when you transmit. Set as they recommend, and it works perfectly.
Finally, there are some issues with the squelch in FM causing "motor
boating" in one of the receivers. That does seem to be new in 2.1.5 and has
been identified as a problem.
There are at least three issues where the VU5K does not quite get the
emulation right.
1. It does not always assign the PTT to the correct VFO. You need to set
this manually.
2. It does not set the TX mode. Set manually.
3. If you go from a VU to a UV satellite, or UV to VU, is chokes with some
error messages, and then RX2 shuts down. From the messages, it seems to be
trying to set both RX1 and RX2 to the same band. Restart RX2, and all is
well. As a work around, I created a dummy satellite with both uplink and
downlink on 20 meters. I select that first, and then the new satellite. It
is faster, slightly, than clearing the error messages and restarting RX2.
Flex has a bug report on this, and I talked with one of their people at the
Huntsville Hamfest yesterday.
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Nick Pugh K5QXJ
Sent: Sunday, August 21, 2011 4:39 AM
To: 'AMSAT BB'
Subject: [amsat-bb] Flex 5000
I am struggling to get my Flex 5000 and satpc32 to work. Has anyone on the
list been able to get this combination to get the performance we get with
the vintage radios? My best success has come with version 2.0.2.2 . The
latest release Friday make thing worse.
Thanks
nick
Office 337 593 8700
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
_______________________________________________
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: 10
Date: Mon, 22 Aug 2011 08:13:41 -0400
From: Carl Rimmer W8KRF <w8krf@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Keps
Message-ID: <4E5247F5.3090505@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Thank you Mark, Alan, and Erich. It is now working as I wanted. I see
that I have two options now. I can load my file OR load the keps "live"
from Celetrack. I was finally able to copy some of the telemetry last
night and SatPC did a very nice job of keeping up with the Doppler. I
have to fine tune it but it was exciting to finally copy something and
be able to upload it to the website. Thank you all again for the very
timely response.
73,
--
*Carl W8KRF *
------------------------------
Message: 11
Date: Mon, 22 Aug 2011 10:09:02 -0400
From: Dee <morsesat@xxxxxxxxx.xxx>
To: "'Kevin Deane'" <summit496@xxxx.xxx>, amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Seriously Get Over It!
Message-ID: <003901cc60d5$0befb0a0$23cf11e0$@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
In Line with these continuous stream of reports-----
If you send in for the Certificate-Please send in 1 report for each
type of reception. Please avoid duplicates, The certificate
generators do not need multi reports- Send all reports to the
ARRISsat-1 Team. They need the reports to keep the bird alive and
well.
Send in to the Certificates ONLY what is asked for. We ( Certificate
Team) do not have the capability (manpower wise) to forward all these
good informational reports to the people that need them. The
ARRISSAT-1 team needs your telemetry and send it in via the checkmark
on the software so the proper engineering specs get to the team.
I have listened many times and sent in reports. It is great fun to
hear the fruits of the team. It is going to get busier when the US
school system gets into full swing and starts sending in for
certificates for their efforts. Let's encourage the educational types
to include this scientific side of this bird into their curriculum.
73,
Dee, NB2F
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx
On Behalf Of Kevin Deane
Sent: Sunday, August 21, 2011 6:57 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Seriously Get Over It!
Enough with the friggin ARISSAT-1 reports, gee I heard it too. Post
your reports here http://oscar.dcarr.org/ I mean really .
Kevin
KF7MYK
_______________________________________________
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: 12
Date: Mon, 22 Aug 2011 17:13:33 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "Chris Bloy" <chris@xxxxxxxxxxx.xx.xx>, "Amsat - BBs"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Fibreglass tube for G5500?
Message-ID: <000e01cc60de$0f69cd20$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Chris Bloy" <chris@xxxxxxxxxxx.xx.xx>
To: <amsat-bb@xxxxx.xxx>
Sent: Monday, August 22, 2011 11:01 AM
Subject: [amsat-bb] Fibreglass tube for G5500?
> Hi All,
> So, I was wondering, can I get say a 1 ? fibreglass pole and then slip the
> slightly small aluminium pole inside to give extra strength without
> affecting the radiation pattern?
Hi Chris,M0DQO
You cannot because a fibreglass tubing fitted over an aluminium tubing
is like to have a single aluminium tubing and the radiation pattern will
be affected.
> I have google'd a couple of places and it appears I need to get tubing but
> not sure if anyone has any experience in this department?
Read please the following article written by G6LVB
http://www.g6lvb.com/fibermetalboom.htm
> Many Thanks,
> Chris - M0DQO
73" de
i8CVS Domenico
------------------------------
Message: 13
Date: Mon, 22 Aug 2011 10:18:40 -0500
From: John Becker <w0jab@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Seriously Get Over It!
Message-ID: <5.2.0.9.2.20110822101222.027b6b70@xxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Actually -
those of us in the rural area get the Internet by one of 2 ways.
1. dial up, slow but just like sunset it finely get's here.
2. satellite. With a bandwidth limit - once limit is reached
speed slows down to that of dial up or one "must" pay
more for the service.
Having said that how about just using that "DELETE KEY"
before the post is sent. That way no one is bothered.
It's so easy that even Ray Charles could see this.
The person re posting is the one that needs to use and
learn where that DELETE is not the person reading.
There is no 2nd option for us.
------------------------------
Message: 14
Date: Mon, 22 Aug 2011 10:28:28 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
To: "'Chris Bloy'" <chris@xxxxxxxxxxx.xx.xx>, "'Amsat - BBs'"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Fibreglass tube for G5500?
Message-ID: <3ED1A54B92EF4D7CB9F2050A923F9EF0@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Chris,
As has been pointed out, an aluminum liner won't work. I have a fiberglass
tube, and found a solid wood rod at a local building supply store. It is a
perfect friction fit. I cut it about 2 inches shorter than the tube,
leaving about an inch space at each end. I stood it on end, and filled one
end with RTV. After it hardened, I swapped ends and sealed the other end.
It has been in use for almost 15 years with no failures or leakages.
73s,
Alan
WA4SCA
------------------------------
Message: 15
Date: Mon, 22 Aug 2011 10:52:38 -0500
From: Gregg Wonderly <w5ggw@xxx.xxx>
To: Phil Karn <karn@xxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Turn off AGC when receiving BPSK-1000
Message-ID: <4E527B46.9080108@xxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
What kind of codec makes the most sense to you? We have things like D-Star
that
have existing hardware (the codec exists and is documented). Many really seem
to find it unusable since they have to pay for it. I find it odd that their
time to reinvent the wheel is somehow free.
Are there any other answers, such as the GSM codec? Echolink uses that, and
thus a path out of an echolink client to the ISS could be direct. I have a
Java
version of the echolink client that I wrote quite a few years back that
could be
used to investigate digital voice with other software codecs.
It would seem wise for the RF modulation scheme to have a reasonable FEC to
try
and minimize retransmission. What kinds of modulation schemes would be easy
to
put on board the ISS and potentially other craft that could be 100% hardware
based to minimize the "moving" parts? For example are there any existing
"FPGA"
kind of device based SDR kits with "digital data modulation"? I've seen
quite a
few that are based on complete programs running on Windows or other OSes.
We'll
need something in hardened hardware I'd think.
Thoughts?
Gregg Wonderly
On 8/20/2011 9:10 PM, Phil Karn wrote:
> On 8/19/11 7:51 AM, Gregg Wonderly wrote:
>
>> What kind of digital are you suggesting? Voice and data both? A
>> digital path from anywhere on the planet to the appropriate ground
>> station is easily doable with some "documentation" of the ground stations.
>
> Digital voice would be the easiest to support since the data rate is so
> modest. Low rate data (< 100 kb/s) wouldn't be much harder. All it takes
> is a stabilized platform with microwave antennas. Any ground station
> with an Internet connection could automatically link with the ISS and
> relay it to a central point (e.g., Houston) and then hand it off to the
> next ground station. One advantage we hams have always had over NASA
> itself are our numbers and geographical distribution. We obviously
> wouldn't be able to cover the large parts of the earth that are entirely
> water but we could still do a pretty good job with the rest.
>
>
------------------------------
Message: 16
Date: Mon, 22 Aug 2011 17:39:08 +0100
From: "Francisco Costa, CT1EAT" <listas_ct1eat@xxxx.xx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ARISSat-1 CW2 beacon active
Message-ID: <4B81C9B6934C42AEA5931F1D7442F99B@xxxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi all
Last pass over EU (1622-1631) CW2 beacon was active.
BPSK TLM decoded fine.
73 F.Costa, CT1EAT
http://ct1eat.no.sapo.pt
------------------------------
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End of AMSAT-BB Digest, Vol 6, Issue 483
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