Hi All
Just getting back to A0 73. Found AO 73 in the CELTEX file, that was great. Is the data signal stable as compared to the transponder? If not what is the technique for tracking the drift? I would like to try to implement at school by April. With a little luck we will have the upgraded Portable SATCOM running next week. Once it is up I will try to get some IT guys setting up the dash board.
Also what is the minimal antenna to copy AO 73? We have picked up a second school and looking at a 3rd one maybe next year,
Your answers will be a great help.
God Bless
Rich W4BUE K4AMG.org W4FOS HS Radio Club
----- Original Message ----- From: "M5AKA" [email protected] To: "AMSAT BB" [email protected] Sent: Saturday, January 18, 2014 6:37 AM Subject: [amsat-bb] New Guide Promotes FUNcube-1's Educational Value
ARRL Education & Technology Program (ETP) Director Mark Spencer, WA8SME has developed a new FUNcube guide, see
http://www.arrl.org/news/new-guide-promotes-funcube-1-s-educational-value
73 Trevor M5AKA AMSAT-UK website http://amsat-uk.org/ Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396 Twitter https://twitter.com/AMSAT_UK
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 Rich,
The minimum equipment to receive is pretty small. I think it depends in detail on what you want to do. The signal is nice and strong in the daytime when you would be doing school experiments. When Funcube is in sun, it turns off the ham transponder and uses all it's downlink power on the telemetry beacon.
To give you an idea of what you need, I have been able to hear AO73 on an HT with rubber ducky. I have not tried to decode anything that way, and I would not necessarily recommend that, but it IS easy to receive. For my telemetry station, I am using a Funcube Dongle Pro Plus (I also used and older Pro non-Plus), a M3 Eggbeater 2M antenna and a preamp out at the antenna. The antenna is not well placed. It maybe 6 feet above the ground between my house and the woods, but with a clearish view to the southeast. I am generally able to get dozens of packets per daytime pass depending on the azimuth and altitude of the pass. At night when the beacon power is a lot lower, I am more likely to get a few packets up to a couple dozen, again depending on the azimuth and altitude. I can generally receive successfully on 2 or three passes in the morning and 1 or 2 passes in the evening. Obviously, you can get more with a beam of some sort, and the act of pointing is itself interesting science.
73,
Burns W2BFJ
On Sat, Jan 18, 2014 at 8:50 AM, Rich/wa4bue [email protected]wrote:
Hi All
Just getting back to A0 73. Found AO 73 in the CELTEX file, that was great. Is the data signal stable as compared to the transponder? If not what is the technique for tracking the drift? I would like to try to implement at school by April. With a little luck we will have the upgraded Portable SATCOM running next week. Once it is up I will try to get some IT guys setting up the dash board.
Also what is the minimal antenna to copy AO 73? We have picked up a second school and looking at a 3rd one maybe next year,
Your answers will be a great help.
God Bless
Rich W4BUE K4AMG.org W4FOS HS Radio Club
----- Original Message ----- From: "M5AKA" [email protected] To: "AMSAT BB" [email protected] Sent: Saturday, January 18, 2014 6:37 AM Subject: [amsat-bb] New Guide Promotes FUNcube-1's Educational Value
ARRL Education & Technology Program (ETP) Director Mark Spencer, WA8SME
has developed a new FUNcube guide, see
http://www.arrl.org/news/new-guide-promotes-funcube-1-s-educational-value
73 Trevor M5AKA AMSAT-UK website http://amsat-uk.org/ Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396 Twitter https://twitter.com/AMSAT_UK
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 decoded 19 frames of telemetry while sitting inside a house with an Icom IC-R10 (manually tuning for Doppler) and a MFJ half-wave whip. A simple audio cable ran from the Icom IC-R10 to a Dell Venue 8 Pro tablet (an 8" tablet running full Windows 8.1). It is quite easy to receive!
73,
Paul, N8HM
On Sat, Jan 18, 2014 at 11:50 AM, Burns Fisher [email protected] wrote:
Hi Rich,
The minimum equipment to receive is pretty small. I think it depends in detail on what you want to do. The signal is nice and strong in the daytime when you would be doing school experiments. When Funcube is in sun, it turns off the ham transponder and uses all it's downlink power on the telemetry beacon.
To give you an idea of what you need, I have been able to hear AO73 on an HT with rubber ducky. I have not tried to decode anything that way, and I would not necessarily recommend that, but it IS easy to receive. For my telemetry station, I am using a Funcube Dongle Pro Plus (I also used and older Pro non-Plus), a M3 Eggbeater 2M antenna and a preamp out at the antenna. The antenna is not well placed. It maybe 6 feet above the ground between my house and the woods, but with a clearish view to the southeast. I am generally able to get dozens of packets per daytime pass depending on the azimuth and altitude of the pass. At night when the beacon power is a lot lower, I am more likely to get a few packets up to a couple dozen, again depending on the azimuth and altitude. I can generally receive successfully on 2 or three passes in the morning and 1 or 2 passes in the evening. Obviously, you can get more with a beam of some sort, and the act of pointing is itself interesting science.
73,
Burns W2BFJ
On Sat, Jan 18, 2014 at 8:50 AM, Rich/wa4bue [email protected]wrote:
Hi All
Just getting back to A0 73. Found AO 73 in the CELTEX file, that was great. Is the data signal stable as compared to the transponder? If not what is the technique for tracking the drift? I would like to try to implement at school by April. With a little luck we will have the upgraded Portable SATCOM running next week. Once it is up I will try to get some IT guys setting up the dash board.
Also what is the minimal antenna to copy AO 73? We have picked up a second school and looking at a 3rd one maybe next year,
Your answers will be a great help.
God Bless
Rich W4BUE K4AMG.org W4FOS HS Radio Club
----- Original Message ----- From: "M5AKA" [email protected] To: "AMSAT BB" [email protected] Sent: Saturday, January 18, 2014 6:37 AM Subject: [amsat-bb] New Guide Promotes FUNcube-1's Educational Value
ARRL Education & Technology Program (ETP) Director Mark Spencer, WA8SME
has developed a new FUNcube guide, see
http://www.arrl.org/news/new-guide-promotes-funcube-1-s-educational-value
73 Trevor M5AKA AMSAT-UK website http://amsat-uk.org/ Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396 Twitter https://twitter.com/AMSAT_UK
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 (3)
-
Burns Fisher -
Paul Stoetzer -
Rich/wa4bue