[amsat-bb] Re: [Mw] Satellite to carry Amateur Radio 5840.00 MHztelemetry beacon
Stephen Hicks, N5AC
n5ac at n5ac.com
Thu Jan 28 11:41:48 PST 2010
I'd be happy to program the additional frequency in the A32 if that would
help. Let me know if you would like this done. generally, I add it to the
software and then state what release it is in and then any after that
release will always have that frequency.
Sent from Austin, Texas, United States
On Thu, Jan 28, 2010 at 12:10, Graham Shirville
<g.shirville at btinternet.com>wrote:
> Hi Stan,
> The website http://www.unisec.jp/unitec-1/en/cooperation.html gives quite
> a lot of info as well...if you wish to make direct contact then you can
> email Naomi Kurahara<703kurahara at gmail.com>
> Graham G3VZV
> ----- Original Message ----- From: "Stan" <stan at capecod.com>
> To: "Trevor ." <m5aka at yahoo.co.uk>
> Cc: <microwave at lists.eclectechs.com>; "Amsat Reflector" <
> amsat-bb at amsat.org>; "Stephen Hicks, N5AC" <n5ac at n5ac.com>
> Sent: Wednesday, January 27, 2010 3:25 PM
> Subject: [amsat-bb] Re: [Mw] Satellite to carry Amateur Radio 5840.00
> MHztelemetry beacon
> This satellite holds some promise of a decent and doable microwave
>> technical challenge.
>> It will be possible to use our 5760 Transverters for a RX only
>> application, maybe with minor tweaking.
>> The LO is 5616 MHz, with the RF of 5840 MHz, the IF is 224 MHz, right in
>> the US 222 MHz band.
>> Maybe with a bigger dish, and a very low noise figure preamplifier,
>> optimized at 5840 MHz,
>> we could be in the UNITEC-1 deep space telemetry collection business.
>> The DEMI A32 LO with an external 10 MHz reference, can add the
>> frequency stability needed.
>> Or maybe Steve, N5AC, can preprogramm the A32 for a 5,840-145= 5,695 / 5
>> = 1,139.0 MHz
>> A reasonable challenge this winter morning, as I sip my lukewarm tea at
>> the dining room table.
>> But more questions are raised:
>> 1. Keplerian elements are great for satellites, but once UNITEC1 enters
>> deep space,
>> what do we use to calculate and predict the path for our accurate tracking
>> 2. Is there anything special about the modulation scheme ?
>> Stan, W1LE Cape Cod FN41sr
>> Trevor . wrote:
>>> On May 20 Japan is planning to launch four "CubeSats". The largest of
>>> them, UNITEC-1, will carry a 15 watt Amateur Radio 5840.00 MHz telemetry
>>> beacon and travel into deep space towards Venus
>>> Three of the satellites will carry Amateur Radio payloads. On the AMSAT
>>> bulletin board Mineo Wakita JE9PEL writes
>>> Four CubeSats in Japan are planned to launch at 20 May 2010
>>> together with PLANET-C which belongs to JAXA by H-IIA rocket.
>>> UNITEC-1, NPO UNISEC (University Space Engineering Consortium)
>>> Negai*", Soka University
>>> 437.305MHz CW, Packet 1200bps FSK AX.25
>>> WASEDA-SAT2, Waseda University
>>> 437.485 MHz CW(FM), PCM-FSK(FM) 9600bps
>>> KSAT, Kagoshima University
>>> Uplink: S-band(2GHz, 10kbps), Downlink: Ku-band(13.275GHz, 10kbps/1Mbps)
>>> IARU Amateur Satellite Frequency Coordination information
>>> Unitec-1 http://www.amsat.org.uk/iaru/finished_detail.asp?serial=141
>>> Negai http://www.amsat.org.uk/iaru/finished_detail.asp?serial=90
>>> WASEDA-SAT2 http://www.amsat.org.uk/iaru/finished_detail.asp?serial=123
>>> AMSAT Bulletin Board AMSAT-BB
>>> AMSAT-UK publish a colour A4 newsletter, OSCAR News, that is full of
>>> Amateur Satellite information.
>>> Join online at https://secure.amsat.org.uk/subs_form/
>>> 73 Trevor M5AKA
>>> Daily Amateur Radio News (Email/RSS): http://www.southgatearc.org/
>>> Email Your News To: editor at southgatearc.org
>>> Or Use Form at: http://www.southgatearc.org/news/your_news_1.htm
>>> Microwave mailing list
>>> microwave at lists.valinet.com
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