[ninux.org] attività AMSAT sui 2.4 e 5.6 ghz

[paolodelbene]

credo che più di inerente di così non ci sia altro topic, ovvero quello di avvisarvi di non dar (un potenziale) fastidio col wi-fi ai satelliti, esempio Eagle:

http://www.amsat.org/amsat-new/eagle/EaglePedia/index.php/Eagle_Functional_Requirements

periodo di lancio 2006-2008.revisione 0 nel 2004, revisione 1 nel 2005, revisione 2 nel 2005, revisione 3 nel 2006

http://www.amsat.org.uk/iaru/finished_detail.asp?serial=82

IARU Amateur Satellite Frequency Coordination

Back to List of Sats whose Frequencies have been coordinated

SSETI-ESEO	Updated: 31/01/2007		Responsible Operator	Christophe Candebat F1MOJ
Supporting Organisation	The SSETI Association & ESA
Contact Person	Per Berglund [EMAIL PROTECTED]
Headline Details: The ESA sponsored, SSETI ESEO mission, is planned for a 7 degree inclination GTO with a launch from Kourou in late 2008. A 120kg satellite of similar construction to SSETI Express, it will employ deployable solar arrays and incorporate cold gas jets for attitude control. In addition to an S band communications system using non amateur frequencies around 2.1 and 2.2GHz, there will be an amateur satellite service U/S linear transponder which will incorporate both analogue and digital(STELLA) systems .Output power will be approx 9 watts. As it is not expected that the satellite can be maintained in an earth pointing mode for more than a few weeks, omni-directional antennas will be employed. The inverting linear transponder will have an output on 2400.050-2400.150MHz and input between 435.950 –435.850 MHz. A 400bps BPSK telemetry beacon will be avauilable on 2400.100 or 2400.150MHz depending on which transponder chain is in use. This equipment is being provided by a group of AMSAT-UK members. For more information see www.sseti.net and www.uk.amsat.org
Applications Date:	18/12/2006		Freq coordination completed on	31/01/2007

The IARU Amateur Satellite Frequency Coordination Status pages are hosted by AMSAT-UK as a service to the world wide Amateur Satellite Community

 

il satellite si trova vicinissimo al primo canale del wifi, intercorre una larghezza di banda (bandwidth) 2400.050

e 2400.150 ed una intermedia a 2400.100 quindi fate attenzione, dal momento che il wi-fi inizia a trasmettere a

2402.

SSETI express  operating modes

	Mode UpLink DownLink Frequency Mode PL Tone Frequency Mode Power FM repeater  U/S  437.250 MHz FM voice 67 Hz 2,401.835 MHz FM voice 3 W Digital packet & telemetry  U/S 437.250 MHz 9k6 bps   2,401.835 MHz 38k4 bps 3 W Digital packet & telemetry  U/U 437.250 MHz 9k6 bps   437.250 MHz 9k6 bps 3 W

http://www.keps.it/it/i_satellites_info/i_sseti/i_sseti.html

http://www.keps.it/it/i_satellites_info/i_echo/i_echo.html

http://www.amsat.org/amsat-new/echo/

http://www.keps.it/it/i_satellites_info/i_phase3e/i_phase3e.html

Phase - 3E  operating frequencies

Band Uplink Downlink Passband limits Passband limits Beacon Linear  MHz Digital  MHz Linear  MHz Digital  MHz General Enginee. A     29.300 29.350             V         145.820 145.970     145.812 145.978 U 436.025 436.175 436.200 436.350             L1 1,268.725 1,268.875 1,268.900 1,269.050             L2 1,263.225 1,263.375 1,263.400 1,263.550             S 2,447.675 2,447.725     2,400.275 2,400.425 2,400.600 2,401.000 2,400.250 2,400.500 C 5,668.575 5,668.625                 X         10,490.118 10,490.168         K         24,048.246 24,048.296     24,048.350   R         47,088.283 47,088.333     47,088.350

ciò significa che il wi-fi per tutto il segmento 2400,050, 2400,100, 2400,150, 2400,250,  2400, 275, 2400,500, 2400,600 2401,000, 2401,835 non si può usare così come non si può usare 2447,675 e 2447,725 in banda S ed in banda C non si ouò usare 5.668,625

quindi fra 2402,000 e 2401,835 intercorre una larghezza di banda di: 0,165 khz

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