[amsat-bb] Re: [Mw] Satellite to carry Amateur Radio 5840.00 MHztelemetry beacon
g.shirville at btinternet.com
Thu Jan 28 10:10:07 PST 2010
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>
----- 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
> 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,
>> 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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