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RE: 2.4GHz Test Signals



Dave,

Doing a bit further reading,led to the following AMSAT Web site

http://www.amsat.org/amsat/sats/n7hpr/uo11_kd2.html,

and the fact that UO-11 uses LHCP for all of its beacons. Even the the UO-
Sat Summary at: http://www.amast.org/amsat/sats/n7hpr/uo11_kd2.html made no
mention of the beacon EIRP. If you find out what is the EIRP of the S-band
beacon- please send it along to me. Cheers.

73, Jim (N6MV)

..................................................................
UoSAT-OSCAR-11 carries three beacon transmitters that are easily heard using
simple groundstation equipment. The VHF beacon carries Audio Frequency Shift
Keying (AFSK) at 1200 baud plus analog voice messages all on a single
narrow-band FM carrier frequency of 145.826 MHz. The UHF beacon is capable
of producing either AFSK-FM or high-speed PSK on a carrier frequency of
435.025 MHz. This beacon is most often used to downlink information from the
Digital Store and Readout (DSR) Experiment at 4800 baud, which includes CCD
Earth image data, results from the Particle Wave Experiment, and engineering
data from the RCA COSMAC 1802 CPU. The SHF beacon is the least used, but can
sometimes be heard transmitting FM and PSK signals on a carrier frequency of
2401.5 MHz. Antenna polarization for all three beacon transmitters is
left-hand circular (LHCP).

.............................................................


> -----Original Message-----
> From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
> Behalf Of Dave Cawley
> Sent: Tuesday, February 01, 2000 3:01 PM
> To: amsat-bb@AMSAT.Org
> Subject: [amsat-bb] 2.4Ghz
>
>
>
>
> From: Dave Cawley
> Cambridge England
> Dave@TheWizard.demon.co.uk
> Web site http://www.Time-step.com
> Tel.  +44 1440 820040
> Fax +44 1440 820281
>
>
>
> Guys
>
> I have asked several time now.  References given to me did not
> come up with
> answers.........
>
> Can anyone specify the exact polarisation and EIRP of ANY 2.4Ghz
> beacon from
> ANY AMSAT satellite ???
>
> Or can anyone tell me where to go ?
>
> Dave  G4IUG
>
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>

----
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