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RE: SSETI UHF "Carrier Pulse Beacon"

OK - now I'm more confused since 437.250 has been given as the "uplink"
frequency. So are you saying in the "beacon" mode, the beacon transmit
frequency is 437.250 MHz?

Also, I only saw one S band patch antenna in the satellite pictures. Can I
assume that there is a patch on three of the surfaces with power being split
equally between them? The email line wrapping might have fouled up what I

Thanks again Graham....Bill

-----Original Message-----
From: Graham Shirville [mailto:g.shirville@btinternet.com]
Sent: Wednesday, August 31, 2005 3:06 PM
To: Bill Ress; amsat-bb@amsat.org
Cc: Neil.Melville@esa.int
Subject: Re: SSETI UHF "Carrier Pulse Beacon"

Yup well spotted - the obvious has been missed on the mission page - but it
is in the works to be added real soon - you are looking at the beta test
version!  The pulse beacon simply keys the PTT of the main UHF transceiver
without any AX25 data running

Frequency     437.250 MHz (half-duplex)          2401.835 MHz

Antennas        Monopole whip                             3 x patch antennas
facing ±x and

Power             Approx 3W                                 Approx,   0.7W ±
x and 1.5W

Modulation      FSK and pulse beacon                 FSK

Protocol         Unnumbered AX25                        Unnumbered AX25

Baud rate         9600 bps                                     38400 bps

Polarisation        Linear
Right-hand circular

hope this helps


Graham G3VZV
----- Original Message -----
From: "Bill Ress" <bill@hsmicrowave.com>
To: "Graham Shirville" <g.shirville@btinternet.com>; <amsat-bb@amsat.org>
Sent: Wednesday, August 31, 2005 10:53 PM
Subject: SSETI UHF "Carrier Pulse Beacon"

> Hi Graham,
> I'm starting to get ready for September 27th. and I've been banging around
> the SSETI web site looking for the frequency of the UHF "Carrier Pulse
> Beacon" which is referred to in several places with no luck. AMSAT-NA also
> doesn't show a UHF beacon frequency. What am I missing??
> Bill - N6GHz
Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
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