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RE: Noises on 435.215 ?



UNISAT-3 had/has a 9k6 GMSK transmitter on 435.275...if not it, maybe part of the same "family"? I'm not in front of my home PC with a tracking program, but how do the reports match the orbit for UNISAT-3?

73, Drew KO4MA

-----Original Message-----
>From: Howard Long <howard@howardlong.com>
>Sent: Dec 30, 2005 10:04 AM
>To: Paul Luggar <luggsey@hotmail.com>, Dave G1OCN <dave@g1ocn.com>, david.barber@dbelectronics.co.uk
>Cc: amsat-bb@amsat.org, Neil Melville <nmelville@freenet.co.uk>, graham@shirville.com
>Subject: RE: [amsat-bb] Noises on 435.215 ?
>
>Folks
>
>A real shot in the dark, thinking out loud. If it is Mobitex then it's 9600
>GMSK. Adding two and two together and probably making five, didn't one of
>the recently released satellites (NCUBE-2) use a CMX589a chip that pops out
>GMSK a la mobitex?
>
>The downsides: The NCUBE2 downlink should be 437.305 though - but if it uses
>a frequency agile exciter that may account for that. The 21:47 LOS Dave
>G1OCN gives in the UK would make it about 40 mins ahead of SSETI Express -
>way to far ahead according to the recent reports of slowly moving object
>(0.35 mins ahead at only 0.58 meters/sec delta v).
>
>73, Howard G6LVB
>
>-----Original Message-----
>From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
>Behalf Of Paul Luggar
>Sent: 30 December 2005 12:39
>To: Dave G1OCN; david.barber@dbelectronics.co.uk
>Cc: amsat-bb@AMSAT.Org
>Subject: Re: [amsat-bb] Noises on 435.215 ?
>
>
>Sounds like a data mode called Mobitix or similar I used to decode years
>ago.
>The description of sounding like a truck engine activated a brain cell.
>(Just one!)
>Let us know if you id. it.
>
> Paul.
>
>M0SCI
>
>Amsat UK member 6484
>
>
>----- Original Message -----
>From: "Dave G1OCN" <dave@g1ocn.com>
>To: <david.barber@dbelectronics.co.uk>
>Cc: <amsat-bb@amsat.org>
>Sent: Friday, December 30, 2005 11:44 AM
>Subject: Re: [amsat-bb] Noises on 435.215 ?
>
>
>> Hi Dave,
>>
>> I have listened to the recording, not a good one, but the tones
>> run for 30/32 seconds and stop for 1 to 2 seconds.
>> Definitely moving, with Doppler.
>> It's my guess that it would be best decoded in an SSB mode.
>> Difficult to describe the noise, but its repetitive,  like the tick
>> over of a lorry engine.
>>
>> Don't think my DSP2232 will decode this one. Hi.
>>
>> I will have another listen during the course of the day.
>>
>> Cheers,
>>
>> Dave.
>> ----
>> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
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>----
>Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
>Not an AMSAT member? Join now to support the amateur satellite program!
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>----
>Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
>Not an AMSAT member? Join now to support the amateur satellite program!
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----
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