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CX2SA > SATDIG 12.01.09 23:45l 575 Lines 20701 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: Mars Rover Program (Edward Cole)
2. Re: Handbag Sat :-) (Nate Duehr)
3. Radio Shack bargain bin find (Andrew Glasbrenner)
4. ISS Crossband Repeater (Andrew Koenig)
5. Re: ISS Crossband Repeater (Bill Booth)
6. Re: ISS Crossband Repeater (n3tl@xxxxxxxxx.xxxx
7. Re: ISS Crossband Repeater (Patrick STODDARD (WD9EWK/VA7EWK))
8. Cheap Auto Trackin Rotator Controller (K. Tsurumi)
9. STS-51F Videos on YouTube (Trevor)
10. Re: ISS Crossband Repeater (n3tl@xxxxxxxxx.xxxx
11. Computer Control IC-1271 (Gary "Joe" Mayfield)
12. Re: Computer Control IC-1271 (Michael J. Wolthuis)
----------------------------------------------------------------------
Message: 1
Date: Sun, 11 Jan 2009 11:05:34 -0900
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Mars Rover Program
To: Curt Nixon <cptcurt@xxxxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID: <200901112005.n0BK5YPT034222@xxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Curt,
The rovers operate on UHF links to their orbiting companion which
link to earth on mw frequencies to my understanding. I haven't
specifically researched all of the missions so one probably can get
more certain information from mission websites or from JPL, which
administers most of the missions.
in 1996 Mars Global Surveyor (MGS) was launched to Mars and is an
orbiter. It carries 437-MHz equipment for communicating with
rovers. JPL involved hams in characterizing the 437-MHz system
shortly after launch. That helped the mission folks to gather real
time data on how well it would work as a planet-to-orbit link. QST
had an article outlining this mission at the time.
A yahoo group called amateur-DSN is a good place to ask your
questions, as this is a international group who build earth stations
attempting to receive signals from space probes such as the Mars
missions. Typically, they try for the orbiters that have higher gain
antennas and more RF power. The rovers used off the shelf UHF radio
modems which probably only output a few watts to low gain or omni
antennas. However, I do recall seeing a dish on the rovers so that
may indicate mw backup links that might possibly be detectable by
amateur stations.
Later this year I will be looking to add 8415-MHz receiving equipment
to my 16-foot dish with the object to try recovery of carrier signals
from some of these probes.
73, Ed - KL7UW
http://www.kl7uw.com/raseti.htm
At 09:37 AM 1/11/2009, Curt Nixon wrote:
>Just watched the Nat'l Geographic Special on the Mars Rovers--Spirit and
>Opportunity. Great program !!
>
>Has anyone here been able to rcv any of the signals from them? Any
>attempts?
>
>Curt
>KU8L
>_______________________________________________
>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: Sun, 11 Jan 2009 14:33:38 -0700
From: Nate Duehr <nate@xxxxxxxx.xxx>
Subject: [amsat-bb] Re: Handbag Sat :-)
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <28E6E6AB-402B-4137-B8FB-32D989AF990A@xxxxxxxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
On Jan 11, 2009, at 5:53 AM, Chris Bloy wrote:
> Hi All,
>
> My sat has turned up :-
>
> ISS DEB [TOOLBAG]
> 1 33442U 98067BL 09010.11134351 .00031997 00000-0 20741-3 0 824
> 2 33442 51.6439 35.1576 0003034 155.3617 204.8152 15.75714425 8091
Should start an ISS tool bag de-orbit pool... like the betting that
took place on the de-orbit of previous AMSAT birds. :-)
--
Nate Duehr, WY0X
nate@xxxxxxxx.xxx
------------------------------
Message: 3
Date: Sun, 11 Jan 2009 18:22:29 -0500
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Radio Shack bargain bin find
To: <amsat-bb@xxxxx.xxx>
Message-ID: <3069A915D33F4B22BBB57174CF465887@xxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I have a few different projects that I tackled today that involved 2.5mm
stereo connectors. After finding my junk box didn't have any, I headed down
to Radio Shack rather reluctantly...but it's the only game in town on a
Sunday afternoon. Of course the one I went to wasn't a "parts" store, and
only had mono plugs. So I decided to cruise the yellow clearance tags and lo
and behold, SKU # 43-2003 was on clearance for $1.97. This is half the cost
of one of the plugs from the same store. This item consists of a nice 6 ft
coiled cable, with a right angle gold-plated 2.5mm stereo plug on one end,
and a jack of the same size on the other end. BINGO! I bought four of the
seven they had, and a few other pieces I knew the junk box was also missing.
Once home, three were hacked up and made into the following cables:
1) Male 2.5mm to DB-9 for connection to the AMSAT' D7 loaner rig for
programming
2) Female 2.5mm to DB-9 for connection to my Garmin GPS and D7 mobile
harness in lieu of the D7. This allows me to feed NMEA GPS data into my
laptop and logging software for next weekend's VHF contest while roving.
3) Male 2.5mm to female 3.5mm for connection from the D7 to normal stereo
headphones. These headphones are plentiful, and by cross wiring the female
end of the cable you get sound in both ears without adapters.
I just wanted to share because I know there are many satellite users that
have the D7 also.
73, Drew KO4MA
------------------------------
Message: 4
Date: Sun, 11 Jan 2009 21:06:20 -0600
From: Andrew Koenig <andrewkoenig@xxxxxxxxxx.xxx>
Subject: [amsat-bb] ISS Crossband Repeater
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID:
<2f52b89b0901111906iad6129cy3775ea3fa6a9e5f@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Tonight I had one of the best times I have ever had on the satellites. I'm
not too sure you all would enjoy it for the same reasons, but I thought it
was amazing.
I was starting to receive the bird, and I tried TX'ing into it, but for some
reason the tone didn't stay programmed into my FT-60. So with one hand I'm
trying not to loose the satellite with my arrow antenna, while with the
other hand I am trying to program the radio.
Eventually I give up on programming it so it automatically does the split,
so I program in 145.99/67hz tone on one channel, and then 437.805-437.790
(in 5khz steps) in the other channels. Once I got it all programmed enough
so it will work, the ISS is at the peak, and I was literally recieving it at
full strength, where all of the bars in my HT are lit up.
At this point in the pass, it seemed like I was doing pretty well between
the 5 different tasks, aiming the antenna, polorization, doppler, switching
between TX/RX channels, and making contacts. I really enjoyed this part
because it worked, despite the severe improvisions I had to make to get it
to work.
Although I only made three contacts (W5KUB, W5VG, WA4NVM), I would still
consider this a very successful pass.
--
Andrew Koenig
KE5GDB
The 15 year old ham
------------------------------
Message: 5
Date: Sun, 11 Jan 2009 22:19:57 -0500
From: "Bill Booth" <ve3nxk@xxxxx.xxx>
Subject: [amsat-bb] Re: ISS Crossband Repeater
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Message-ID: <000d01c97464$afcc1930$0400a8c0@xxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
> Eventually I give up on programming it so it automatically does the split,
> so I program in 145.99/67hz tone on one channel, and then 437.805-437.790
> (in 5khz steps) in the other channels. Once I got it all programmed enough
> so it will work, the ISS is at the peak, and I was literally recieving it
> at
> full strength, where all of the bars in my HT are lit up.
I am trying to figure out the best method to get thru the repeater. From
the response above I am trying to decide if the uplink stays stable and the
downlink is tuneable, or is it best to tune both to keep on frequency. If
tuning for both is required which way is it normal or reverse. I have a
IC970 that I am using and can put it either way ....
At one point tonite I could hear my transmit get keyed but soon lost
it.......not sure if it was the pile up or my tuning...
Some tips would be nice ...
Bill Booth VE3NXK
Sundridge ON, Canada
79.23.37 W x 45.46.18 N
FN05ns
Visit my weather WebCam at http://www.almaguin.com/wxcurrent/weather.html
Organ and Tissue Donation - The Gift of Life
Talk to your family. Your decision can make a difference.
------------------------------
Message: 6
Date: Mon, 12 Jan 2009 03:39:53 +0000
From: n3tl@xxxxxxxxx.xxx
Subject: [amsat-bb] Re: ISS Crossband Repeater
To: "Bill Booth" <ve3nxk@xxxxx.xxx>, "AMSAT BB" <amsat-bb@xxxxx.xxx>
Message-ID:
<011220090339.26445.496ABB89000282970000674D22218683269B0A02D2089B9A019C
04040A0DBF049BCC02@xxx.xxx>
Content-Type: text/plain
Bill and all,
My experience in seven months of working the FM satellites and, more recently,
the ISS, is to leave the transmit frequency alone. Period.
At AOS, I'm 10 kHz above the receive frequency, and tune in 5 kHz steps
through the pass until I'm 10 kHz below the receive frequency at LOS. You'll
hear the reception change, and will know when to tune the receive side for
Doppler.
Congrats to you Andrew. From here, the ability to multitask during a pass is
wonderful experience. It occurs to me (and has since I first started working
the satellites) that in a real, true emergency situation, the more resourceful
we are, the more effective our communications abilities can be. I continue to
do everything here manually - hand-holding my antenna and manually tracking
the satellites and manually Doppler tuning - for all of the satellites, not
just the FM birds. I enjoy the challenge as much as it sounds like you did
earlier this evening.
73 to all,
Tim - N3TL
-------------- Original message from "Bill Booth" <ve3nxk@xxxxx.xxx>: --------
------
> > Eventually I give up on programming it so it automatically does the split,
> > so I program in 145.99/67hz tone on one channel, and then 437.805-437.790
> > (in 5khz steps) in the other channels. Once I got it all programmed enough
> > so it will work, the ISS is at the peak, and I was literally recieving it
> > at
> > full strength, where all of the bars in my HT are lit up.
>
> I am trying to figure out the best method to get thru the repeater. From
> the response above I am trying to decide if the uplink stays stable and the
> downlink is tuneable, or is it best to tune both to keep on frequency. If
> tuning for both is required which way is it normal or reverse. I have a
> IC970 that I am using and can put it either way ....
>
> At one point tonite I could hear my transmit get keyed but soon lost
> it.......not sure if it was the pile up or my tuning...
>
> Some tips would be nice ...
>
> Bill Booth VE3NXK
> Sundridge ON, Canada
> 79.23.37 W x 45.46.18 N
> FN05ns
>
> Visit my weather WebCam at http://www.almaguin.com/wxcurrent/weather.html
>
> Organ and Tissue Donation - The Gift of Life
> Talk to your family. Your decision can make a difference.
>
> _______________________________________________
> 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: Sun, 11 Jan 2009 21:36:58 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] Re: ISS Crossband Repeater
To: amsat-bb@xxxxx.xxx
Message-ID:
<2e18ad3e0901112036m26d53726u52a1e5436ef66e88@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Tim!
> My experience in seven months of working the FM satellites and, more
> recently, the ISS, is to leave the transmit frequency alone. Period.
Keep in mind that the ISS TM-D700's receiver is that of a ham mobile
radio, not the broader receivers we're used to on the FM satellites like
AO-51 that are essentially compensating for the small amount of Doppler
shift on your 2m transmit frequency. Whether or not you have to vary
your 2m transmit frequency for the current ISS crossband repeater will
depend on many variables related to your station and the ISS ham gear.
What may be needed for one pass might not be needed on others.
On an ISS pass yesterday morning, I had to start the pass transmitting
on 145.985 MHz with the PL tone. Once I was ready to tune the receive
VFO down from 437.810 to 437.805 MHz, I was able to move my transmit
frequency up to 145.990 MHz for the remainder of the pass. Due to the
buildings around the hamfest site yesterday, I was not able to work that
pass all the way to LOS. If I had, I might have had to move my transmit
frequency up to 145.995 for the last minute or so. If I had a 2.5 kHz
tuning step on my radio, I would have used that and started talking on
145.9875 MHz before moving up to 145.990 MHz.
With all of that said, it has been fun to have the cross-band repeater to
use - both in V/U and (previously) U/V modes. I hope it can be turned on
more often in the future.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 8
Date: 12 Jan 2009 15:23:13 +0900
From: K. Tsurumi <raigyo_7@xxxx.xxx.xx.xx>
Subject: [amsat-bb] Cheap Auto Trackin Rotator Controller
To: amsat-bb@xxxxx.xxx
Message-ID: <20090112062313.49329.qmail@xxxx.xxx.xx.xx>
Content-Type: text/plain; charset=iso-2022-jp
I am using home made Auto Tracking Antenna Rotator Controller.
Fairly simple and economical.
I have described the details on the following URL.
http://www011.upp.so-net.ne.jp/tsurumi/Track88Eng/PIC88Trk.html
73 de JA1JRZ, Kim
------------------------------
Message: 9
Date: Mon, 12 Jan 2009 12:39:14 +0000 (GMT)
From: Trevor <m5aka@xxxxx.xx.xx>
Subject: [amsat-bb] STS-51F Videos on YouTube
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <700107.32609.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Historic Shuttle Amateur Radio Videos
http://www.southgatearc.org/news/january2009/historic_shuttle_videos.htm
BBC interviews UK Cubesat builders
http://www.southgatearc.org/news/january2009/bbc_interviews_cubesat_builders.h
tm
Namibian VHF DXpedition logs 89 EME contacts on first night
http://www.southgatearc.org/news/january2009/namibian_dxpedition_first_night.h
tm
73 Trevor M5AKA
----
Daily Amateur Radio News by email:
http://www.feedburner.com/fb/a/emailverifySubmit?feedId=2783644&loc=en_US
----
------------------------------
Message: 10
Date: Mon, 12 Jan 2009 12:54:01 +0000
From: n3tl@xxxxxxxxx.xxx
Subject: [amsat-bb] Re: ISS Crossband Repeater
To: amsat-bb@xxxxxx.xxxx amsat-bb@xxxxx.xxx
Message-ID:
<011220091254.5013.496B3D68000DA6C90000139522243429029B0A02D2089B9A019C0
4040A0DBF049BCC02@xxx.xxx>
Content-Type: text/plain
Thanks, Patrick!
-------------- Original message from "Patrick STODDARD (WD9EWK/VA7EWK)"
<amsat-bb@xxxxxx.xxx>: --------------
> Hi Tim!
>
> > My experience in seven months of working the FM satellites and, more
> > recently, the ISS, is to leave the transmit frequency alone. Period.
>
> Keep in mind that the ISS TM-D700's receiver is that of a ham mobile
> radio, not the broader receivers we're used to on the FM satellites like
> AO-51 that are essentially compensating for the small amount of Doppler
> shift on your 2m transmit frequency. Whether or not you have to vary
> your 2m transmit frequency for the current ISS crossband repeater will
> depend on many variables related to your station and the ISS ham gear.
> What may be needed for one pass might not be needed on others.
>
> On an ISS pass yesterday morning, I had to start the pass transmitting
> on 145.985 MHz with the PL tone. Once I was ready to tune the receive
> VFO down from 437.810 to 437.805 MHz, I was able to move my transmit
> frequency up to 145.990 MHz for the remainder of the pass. Due to the
> buildings around the hamfest site yesterday, I was not able to work that
> pass all the way to LOS. If I had, I might have had to move my transmit
> frequency up to 145.995 for the last minute or so. If I had a 2.5 kHz
> tuning step on my radio, I would have used that and started talking on
> 145.9875 MHz before moving up to 145.990 MHz.
>
> With all of that said, it has been fun to have the cross-band repeater to
> use - both in V/U and (previously) U/V modes. I hope it can be turned on
> more often in the future.
>
> 73!
>
>
>
>
> Patrick WD9EWK/VA7EWK
> http://www.wd9ewk.net/
> _______________________________________________
> 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: 11
Date: Mon, 12 Jan 2009 10:19:51 -0600
From: "Gary \"Joe\" Mayfield" <gary_mayfield@xxxxxxx.xxx>
Subject: [amsat-bb] Computer Control IC-1271
To: "'AMSAT BB'" <AMSAT-BB@xxxxx.xxx>
Message-ID: <COL0-DAV291B5D80B50E4683F3B1978AD80@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
I'm having a snow day! One of the joys of life in South Dakota! Don't
worry it costs me a day of vacation time. I knocked the dust off my ic-1271
and worked myself on AO-51 as she went by. Has anyone played with computer
controlling and IC-1271? My radio does not have the IC-EX309 interface
unit. I believe that means it will not even accept (CI-V) /TTL level
commands in its current state as there is no connection for them. Has
anyone gone down this road, and solved computer control of an IC-1271?
Thanks and 73,
Joe kk0sd
------------------------------
Message: 12
Date: Mon, 12 Jan 2009 11:26:41 -0500
From: "Michael J. Wolthuis" <wolthui3@xxx.xxx>
Subject: [amsat-bb] Re: Computer Control IC-1271
To: "'Gary \"Joe\" Mayfield'" <gary_mayfield@xxxxxxx.xxx>
Cc: 'AMSAT-BB' <amsat-bb@xxxxx.xxx>
Message-ID: <000301c974d2$8e12f110$aa38d330$@xxx>
Content-Type: text/plain; charset="us-ascii"
Gary,
I have been working down this road as well and tried many methods. You
can't use CI-V unless you have the UX-14 installed. I didn't ever add that
to mine and you can't find it hardly ever anymore. So I found this
http://www.piexx.com/index.php?main_page=product_info&cPath=7&products_id=19
from Piexx. I contacted Chris at Piexx and he said the board has not been
used in a 1271, but would work. He would need a 1271a shipped to him as he
doesn't have one and needs to read and set some settings in the firmware to
understand the freq's of the 1271a. I said that would be fine, but then
found out it sounds like the 1271 is not controllable with HRD (Ham Radio
Deluxe) even though the IC-751a appears to be and Piexx's board works with
HRD.
So while I want to send it to Piexx and get the board installed I wanted to
find software that would work with Chris' board and have not yet found that.
I haven't given up, but took a break as some new D-star toys came Friday and
that is a little higher on the list right now to me. Please let me know
what you find and I'll keep you up to date if I get it sent to Piexx.
Mike
Kb8zgl
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Gary "Joe" Mayfield
Sent: Monday, January 12, 2009 11:20 AM
To: 'AMSAT BB'
Subject: [amsat-bb] Computer Control IC-1271
I'm having a snow day! One of the joys of life in South Dakota! Don't
worry it costs me a day of vacation time. I knocked the dust off my ic-1271
and worked myself on AO-51 as she went by. Has anyone played with computer
controlling and IC-1271? My radio does not have the IC-EX309 interface
unit. I believe that means it will not even accept (CI-V) /TTL level
commands in its current state as there is no connection for them. Has
anyone gone down this road, and solved computer control of an IC-1271?
Thanks and 73,
Joe kk0sd
_______________________________________________
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 member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 4, Issue 23
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