Hi,
This will be the first of probably 1000 questions. Do I need licenses to work with amsat satellites?
Thanks, Brian
Yes. You need to have a amateur radio license for the bands you wish to work, specifically the "uplinks". For example if you wanted to work some of the LEO satellites like AO-51, SO-50, etc. you need at least a "technician" class license. Take a look at ARRL's information as to what bands you can operate with which license (see: http://www.arrl.org/FandES/field/regulations/bands.html).
Information about the amateur satellites in operation can be found at www.amsat.org.
Next question? :-)
Jeremy KB9QIC
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of truckwiz Sent: Friday, November 23, 2007 8:59 PM To: [email protected] Subject: [amsat-bb] new to amsat
Hi,
This will be the first of probably 1000 questions. Do I need licenses to work with amsat satellites?
Thanks, Brian
_______________________________________________ Sent via [email protected]. 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
With the demise of the full duplex W32A (shame!) can anyone advise me of what h/t's are now out there that will allow satellite operation? I have been advised that the new Icom IC-91A/D might be the one but I haven't found any reference to its capability for satellites!
Thanks in advance
*David M0ZLB/KG4ZLB www.m0zlb.com*
Hi David,
Handies with full duplex are getting hard to find. The two separate radios option works fine. Buy a cheap 2m one with 5w output for the uplink. New ones go for under £100
On AO-51 For high passes I just leave the TX radio on 145.920 and just tune the RX for Doppler.
For low passes, like working the US from UK, I tune the TX to give me the best chanceof getting into the transponder with just 5w to an Arrow.
It works!.
73
John G7HIA
David, I have used both the Yaesu FT-51R (my favorite for voice) and the Kenwood D7A (my favorite for data). Both support full-duplex operation and are very easy to use.
73s, Eric Christensen, W4OTN AMSAT Area Coordinator - Southeastern Virginia USA AMSAT Member 35360 http://www.ericsatcom.net
Donate to the Eagle Fund - http://www.amsat-na.com/donation.php?donate=eagle
David - M0ZLB wrote:
With the demise of the full duplex W32A (shame!) can anyone advise me of what h/t's are now out there that will allow satellite operation? I have been advised that the new Icom IC-91A/D might be the one but I haven't found any reference to its capability for satellites!
Thanks in advance
*David M0ZLB/KG4ZLB www.m0zlb.com*
Sent via [email protected]. 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
My goal is to be able to control a robot from a satellite, I'm with a group that is trying to compete in the lunar X prize, here's a video of our earthbound test rover. Also what would be the best transmitter & receiver to buy for this goal?
http://www.youtube.com/watch?v=1CKO67FwFhc
Thanks Brian
-----Original Message----- From: Jeremy Ramirez [mailto:[email protected]] Sent: Friday, November 23, 2007 10:58 PM To: truckwiz; [email protected] Subject: RE: [amsat-bb] new to amsat
Yes. You need to have a amateur radio license for the bands you wish to work, specifically the "uplinks". For example if you wanted to work some of the LEO satellites like AO-51, SO-50, etc. you need at least a "technician" class license. Take a look at ARRL's information as to what bands you can operate with which license (see: http://www.arrl.org/FandES/field/regulations/bands.html).
Information about the amateur satellites in operation can be found at www.amsat.org.
Next question? :-)
Jeremy KB9QIC
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of truckwiz Sent: Friday, November 23, 2007 8:59 PM To: [email protected] Subject: [amsat-bb] new to amsat
Hi,
This will be the first of probably 1000 questions. Do I need licenses to work with amsat satellites?
Thanks, Brian
_______________________________________________ Sent via [email protected]. 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
If you could expand on your request to "control a robot from a satellite" with more specifics then you are likely to get better ideas and suggestions.
Some additional details like... Where would the command station and robot be located? How much time would you need to command the robot each day? What mode would the commands be sent in (digital, audio, FM, SSB...).
Hope your project goes well.
Kenneth - N5VHO
________________________________
From: [email protected] on behalf of truckwiz Sent: Sat 11/24/2007 5:49 AM To: 'Jeremy Ramirez'; [email protected] Subject: [amsat-bb] Re: new to amsat
My goal is to be able to control a robot from a satellite, I'm with a group that is trying to compete in the lunar X prize, here's a video of our earthbound test rover. Also what would be the best transmitter & receiver to buy for this goal?
http://www.youtube.com/watch?v=1CKO67FwFhc
Thanks Brian
-----Original Message----- From: Jeremy Ramirez [mailto:[email protected]] Sent: Friday, November 23, 2007 10:58 PM To: truckwiz; [email protected] Subject: RE: [amsat-bb] new to amsat
Yes. You need to have a amateur radio license for the bands you wish to work, specifically the "uplinks". For example if you wanted to work some of the LEO satellites like AO-51, SO-50, etc. you need at least a "technician" class license. Take a look at ARRL's information as to what bands you can operate with which license (see: http://www.arrl.org/FandES/field/regulations/bands.html).
Information about the amateur satellites in operation can be found at www.amsat.org.
Next question? :-)
Jeremy KB9QIC
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of truckwiz Sent: Friday, November 23, 2007 8:59 PM To: [email protected] Subject: [amsat-bb] new to amsat
Hi,
This will be the first of probably 1000 questions. Do I need licenses to work with amsat satellites?
Thanks, Brian
_______________________________________________ Sent via [email protected]. 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 [email protected]. 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
Brian...
Not to downplay the advantages of available Amateur Radio Satellites in your decision making process but...
Another opportunity to consider is to "piggyback" on someone else's "non-Amateur Radio" experiment. There are several "experimental" satellites that currently are controlled by universities and the like. You might be able to work with them to transmit your test code and have your robot react.
Also you must learn the difference between geo-synchronous(sp) and polar-orbiting satellites. Current availability of "experimental satellites" are in the polar orbiting category which might mean, without a significant antenna, you may only get 10 minutes 2 times a day to attempt your project.
Of course if you can con someone at SIRIUS or XM to open up a channel for you or play your code, that's another thing. Commercial time on other Geo-Sync's can be "purchased."
In the Amateur Radio venue, there are also several digital satellites that exist that might relay your code however your control code would have to work within the satellite's existing communications parameters.
Consider, as it is an experiment, using a balloon repeater for the initial demonstration. With that success you can continue to pursue your satellite.
Roger WA1KAT
----- Original Message ----- From: "Ransom, Kenneth G. (JSC-OC)[BAR]" [email protected] To: "truckwiz" [email protected]; "Jeremy Ramirez" [email protected]; [email protected] Sent: Saturday, November 24, 2007 10:21 AM Subject: [amsat-bb] Re: new to amsat
If you could expand on your request to "control a robot from a satellite"
with more specifics then you are likely to get better ideas and suggestions.
Some additional details like... Where would the command station and robot
be located? How much time would you need to command the robot each day? What mode would the commands be sent in (digital, audio, FM, SSB...).
Hope your project goes well.
Kenneth - N5VHO
From: [email protected] on behalf of truckwiz Sent: Sat 11/24/2007 5:49 AM To: 'Jeremy Ramirez'; [email protected] Subject: [amsat-bb] Re: new to amsat
My goal is to be able to control a robot from a satellite, I'm with a
group
that is trying to compete in the lunar X prize, here's a video of our earthbound test rover. Also what would be the best transmitter & receiver
to
buy for this goal?
http://www.youtube.com/watch?v=1CKO67FwFhc
Thanks Brian
-----Original Message----- From: Jeremy Ramirez [mailto:[email protected]] Sent: Friday, November 23, 2007 10:58 PM To: truckwiz; [email protected] Subject: RE: [amsat-bb] new to amsat
Yes. You need to have a amateur radio license for the bands you wish to work, specifically the "uplinks". For example if you wanted to work some
of
the LEO satellites like AO-51, SO-50, etc. you need at least a
"technician"
class license. Take a look at ARRL's information as to what bands you can operate with which license (see: http://www.arrl.org/FandES/field/regulations/bands.html).
Information about the amateur satellites in operation can be found at www.amsat.org.
Next question? :-)
Jeremy KB9QIC
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of truckwiz Sent: Friday, November 23, 2007 8:59 PM To: [email protected] Subject: [amsat-bb] new to amsat
Hi,
This will be the first of probably 1000 questions. Do I need licenses to work with amsat satellites?
Thanks, Brian
Sent via [email protected]. 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 [email protected]. 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 [email protected]. 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
Hi,
In a perfect world here is what I would like to happen, satellite fly's by, rover sends a packet (or email) of info containing a photo of its current location and some sensor info. The next time the sat comes the rover receives its instructions (move 5 feet forward, power down & then power up and take photo and be ready to send info to sat when it comes by). There is several reasons for doing it this way .We need the practice powering up and down, we also need to see that the rover has a good plan if it misses instructions for one reason or another.
Thanks Brian
_____
From: Ransom, Kenneth G. (JSC-OC)[BAR] [mailto:[email protected]] Sent: Saturday, November 24, 2007 9:22 AM To: truckwiz; Jeremy Ramirez; [email protected] Subject: RE: [amsat-bb] Re: new to amsat
If you could expand on your request to "control a robot from a satellite" with more specifics then you are likely to get better ideas and suggestions.
Some additional details like... Where would the command station and robot be located? How much time would you need to command the robot each day? What mode would the commands be sent in (digital, audio, FM, SSB...).
Hope your project goes well.
Kenneth - N5VHO
_____
From: [email protected] on behalf of truckwiz Sent: Sat 11/24/2007 5:49 AM To: 'Jeremy Ramirez'; [email protected] Subject: [amsat-bb] Re: new to amsat
My goal is to be able to control a robot from a satellite, I'm with a group that is trying to compete in the lunar X prize, here's a video of our earthbound test rover. Also what would be the best transmitter & receiver to buy for this goal?
http://www.youtube.com/watch?v=1CKO67FwFhc
Thanks Brian
-----Original Message----- From: Jeremy Ramirez [mailto:[email protected]] Sent: Friday, November 23, 2007 10:58 PM To: truckwiz; [email protected] Subject: RE: [amsat-bb] new to amsat
Yes. You need to have a amateur radio license for the bands you wish to work, specifically the "uplinks". For example if you wanted to work some of the LEO satellites like AO-51, SO-50, etc. you need at least a "technician" class license. Take a look at ARRL's information as to what bands you can operate with which license (see: http://www.arrl.org/FandES/field/regulations/bands.html).
Information about the amateur satellites in operation can be found at www.amsat.org.
Next question? :-)
Jeremy KB9QIC
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of truckwiz Sent: Friday, November 23, 2007 8:59 PM To: [email protected] Subject: [amsat-bb] new to amsat
Hi,
This will be the first of probably 1000 questions. Do I need licenses to work with amsat satellites?
Thanks, Brian
_______________________________________________ Sent via [email protected]. 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 [email protected]. 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
Brian...
To transmit a picture which has any resolution would require a large file and a lot of clear, interference free reception...perhaps you might take a look at APRS which can use GPS to define location. Trying to send pictures will use up many interference free passes on a satellite which leaves no time for other users.
Turning on, turning off, movement code is much simpler. Google: Packet Radio control, AX.25, APRS. If you use existing code, forego the pictures for a change in location on a displayed map, and use the current crop of Packet radio Satellites, with an Amateur Radio license of course, your communications project is very doable and might give you 9 to 12 passes per day to conduct your experiments.
Roger WA1KAT
----- Original Message ----- From: "truckwiz" [email protected] To: "'Ransom, Kenneth G. (JSC-OC)[BAR]'" [email protected]; "'Jeremy Ramirez'" [email protected]; [email protected] Sent: Saturday, November 24, 2007 1:09 PM Subject: [amsat-bb] Re: new to amsat
Hi,
In a perfect world here is what I would like to happen, satellite fly's by, rover sends a packet (or email) of info containing a photo of its current location and some sensor info. The next time the sat comes the
rover
receives its instructions (move 5 feet forward, power down & then power up and take photo and be ready to send info to sat when it comes by). There
is
several reasons for doing it this way .We need the practice powering up
and
down, we also need to see that the rover has a good plan if it misses instructions for one reason or another.
Hello!
I am going to install a large brass plate at the cable entrance to my shack. I have a large ground rod outside the entrance where everything is going to be grounded. I'm planning on using a large piece of copper strap to connect the plate to the rod.
Is there any substance I can use to clean/prep the copper and the brass? Is there a material to use between the two metals to keep them from oxidizing and keep the bond in good condition?
Thanks
Tyler KM3G
Tyler
Do a google search for MIL-HDBK-419. This should answer all you questions.
Is the copper strap solid or braided? Braided is no good for a lightning ground. Lightning prefers the least inductive, closest path to ground. Braid is inductive to lightning due to the way it is made. Lightning is NOT a DC event. It is a HF AC event.
Cad weld the grounds to the rods and the ground window, eliminate any doubt as to how good the connection is.
Is this ground window bonded to the service entrance ground? Is it bonded to the tower ground?
If not it should be. You need to keep the ground potential of all three places the same. If lightning hits the power line and the grounds are not bonded together, the antenna ground will not be at the same potential as the power ground and current will flow. How much depends on the magnitude to the discharge. Will the equipment survive, depends on the magnitude of the discharge.
Nothing will survive a direct hit.
In a former job, I had to evaluate remote sites that had lightning damage. If the site owner followed my suggestions, lightning damage was minimal. If not, they continued to have damaged equipment due to differences in grounds.
73 Glenn WB4UIV
At 02:59 PM 11/24/07, Tyler Harpster wrote:
Hello!
I am going to install a large brass plate at the cable entrance to my shack. I have a large ground rod outside the entrance where everything is going to be grounded. I'm planning on using a large piece of copper strap to connect the plate to the rod.
Is there any substance I can use to clean/prep the copper and the brass? Is there a material to use between the two metals to keep them from oxidizing and keep the bond in good condition?
Thanks
Tyler KM3G
Sent via [email protected]. 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
To be honest, your bandwidth needs for this is simply out of the scope of the FM ham radio satellites. Even on one of the transponder sats, you would use up most of the total bandwidth available for the whole satellite just for trivial usage. I suggest that you scale the whole thing back to just what is manageable via APRS: i.e. GPS position and a very few bytes of sensor data per pass. It may be that hamsats are simply not a good match for your idea.
Bob - AE6RV
--- truckwiz [email protected] wrote:
Hi,
In a perfect world here is what I would like to happen, satellite fly's by, rover sends a packet (or email) of info containing a photo of its current location and some sensor info. The next time the sat comes the rover receives its instructions (move 5 feet forward, power down & then power up and take photo and be ready to send info to sat when it comes by). There is several reasons for doing it this way .We need the practice powering up and down, we also need to see that the rover has a good plan if it misses instructions for one reason or another.
Thanks Brian
From: Ransom, Kenneth G. (JSC-OC)[BAR] [mailto:[email protected]] Sent: Saturday, November 24, 2007 9:22 AM To: truckwiz; Jeremy Ramirez; [email protected] Subject: RE: [amsat-bb] Re: new to amsat
If you could expand on your request to "control a robot from a satellite" with more specifics then you are likely to get better ideas and suggestions.
Some additional details like... Where would the command station and robot be located? How much time would you need to command the robot each day? What mode would the commands be sent in (digital, audio, FM, SSB...).
Hope your project goes well.
Kenneth - N5VHO
From: [email protected] on behalf of truckwiz Sent: Sat 11/24/2007 5:49 AM To: 'Jeremy Ramirez'; [email protected] Subject: [amsat-bb] Re: new to amsat
My goal is to be able to control a robot from a satellite, I'm with a group that is trying to compete in the lunar X prize, here's a video of our earthbound test rover. Also what would be the best transmitter & receiver to buy for this goal?
http://www.youtube.com/watch?v=1CKO67FwFhc
Thanks Brian
-----Original Message----- From: Jeremy Ramirez [mailto:[email protected]] Sent: Friday, November 23, 2007 10:58 PM To: truckwiz; [email protected] Subject: RE: [amsat-bb] new to amsat
Yes. You need to have a amateur radio license for the bands you wish to work, specifically the "uplinks". For example if you wanted to work some of the LEO satellites like AO-51, SO-50, etc. you need at least a "technician" class license. Take a look at ARRL's information as to what bands you can operate with which license (see: http://www.arrl.org/FandES/field/regulations/bands.html).
Information about the amateur satellites in operation can be found at www.amsat.org.
Next question? :-)
Jeremy KB9QIC
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of truckwiz Sent: Friday, November 23, 2007 8:59 PM To: [email protected] Subject: [amsat-bb] new to amsat
Hi,
This will be the first of probably 1000 questions. Do I need licenses to work with amsat satellites?
Thanks, Brian
Sent via [email protected]. 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 [email protected]. 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 [email protected]. 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
I think you'd have to be extremely clever to do it in a rover, but it's possible to upload and download _small_ data files (<100kb) like .jpgs via GO-32. This would need to be a BIG rover just to handle the comm gear to do this. Think Spirit or Opportunity vs. Pathfinder. You'd need a very good set of circular omni antennas for 2m and 70cm, a hot preamp for 70cm, and probably some muscle on the uplink on 2m.
73, Drew KO4MA
There are satellites that support APRS with data rates less than 100 bps, but a satellite with a PacSat BBS is probably the most useful to you as files can be stored on the satellite and then retreived. The 1200 bps satellites were designed to be accessed with an omidirectional antenna, but only AO-16 is left and it is semi-operational. There are a some 9600 bps PacSats, but they require a directional antenna with 12 dBic or more gain. The uplink could use an omidirectional antenna if you have power to spare, but a directional antenna would require much less RF power.
73,
John
KD6OZH
----- Original Message ----- From: "truckwiz" [email protected] To: "'Ransom, Kenneth G. (JSC-OC)[BAR]'" [email protected]; "'Jeremy Ramirez'" [email protected]; [email protected] Sent: Saturday, November 24, 2007 18:09 UTC Subject: [amsat-bb] Re: new to amsat
Hi,
In a perfect world here is what I would like to happen, satellite fly's by, rover sends a packet (or email) of info containing a photo of its current location and some sensor info. The next time the sat comes the rover receives its instructions (move 5 feet forward, power down & then power up and take photo and be ready to send info to sat when it comes by). There is several reasons for doing it this way .We need the practice powering up and down, we also need to see that the rover has a good plan if it misses instructions for one reason or another.
Thanks Brian
From: Ransom, Kenneth G. (JSC-OC)[BAR] [mailto:[email protected]] Sent: Saturday, November 24, 2007 9:22 AM To: truckwiz; Jeremy Ramirez; [email protected] Subject: RE: [amsat-bb] Re: new to amsat
If you could expand on your request to "control a robot from a satellite" with more specifics then you are likely to get better ideas and suggestions.
Some additional details like... Where would the command station and robot be located? How much time would you need to command the robot each day? What mode would the commands be sent in (digital, audio, FM, SSB...).
Hope your project goes well.
Kenneth - N5VHO
From: [email protected] on behalf of truckwiz Sent: Sat 11/24/2007 5:49 AM To: 'Jeremy Ramirez'; [email protected] Subject: [amsat-bb] Re: new to amsat
My goal is to be able to control a robot from a satellite, I'm with a group that is trying to compete in the lunar X prize, here's a video of our earthbound test rover. Also what would be the best transmitter & receiver to buy for this goal?
http://www.youtube.com/watch?v=1CKO67FwFhc
Thanks Brian
-----Original Message----- From: Jeremy Ramirez [mailto:[email protected]] Sent: Friday, November 23, 2007 10:58 PM To: truckwiz; [email protected] Subject: RE: [amsat-bb] new to amsat
Yes. You need to have a amateur radio license for the bands you wish to work, specifically the "uplinks". For example if you wanted to work some of the LEO satellites like AO-51, SO-50, etc. you need at least a "technician" class license. Take a look at ARRL's information as to what bands you can operate with which license (see: http://www.arrl.org/FandES/field/regulations/bands.html).
Information about the amateur satellites in operation can be found at www.amsat.org.
Next question? :-)
Jeremy KB9QIC
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of truckwiz Sent: Friday, November 23, 2007 8:59 PM To: [email protected] Subject: [amsat-bb] new to amsat
Hi,
This will be the first of probably 1000 questions. Do I need licenses to work with amsat satellites?
Thanks, Brian
Sent via [email protected]. 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 [email protected]. 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 [email protected]. 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
participants (12)
-
Andrew Glasbrenner -
Bob Stewart -
David - M0ZLB -
Eric Christensen -
Glenn Little WB4UIV -
Jeremy Ramirez -
John B. Stephensen -
john heath -
Ransom, Kenneth G. (JSC-OC)[BAR] -
Roger Kolakowski -
truckwiz -
Tyler Harpster