[amsat-bb] Re: FUNCUBE-1/AO-73 reception issue

Rick Walter wb3csy at gmail.com
Fri Nov 22 14:08:13 PST 2013

Steve, I don't know if I can help. I am using a Kenwood TS 2000 X with an
interface to go between the audio output in the back of the rig to the
input of my HP laptop. I just have an M squared eggbeater without any
pre-amp for receive.

 My tracking software is SatPC32 to correct for the doppler effect. I only
touched up the downlink a couple of times on each of the two passes I
recorded and uplinked to the warehouse (147 frames).

I Load SatPC32, have it running, Load the dashboard software and  choose to
capture from the soundcard. The audio output of the RASCAL interface goes
into the input to my sound card. I have the volume up at about 75%. Before
the bird comes over the horizon, I see a wave on the Dashboard software
that is the result of the noise coming from the receiver. I can actually
hear the bird about 20-40 seconds before it comes over the horizon (very
faint but hear the distinct tone). The real time screen starts filling with
data as I see on the right bottom counting of the type of data received,
the serial number, and to the right, the packets decoded and missed, plus
the number of packets already sent to the warehouse and the number waiting
to be sent.

Don't know if that helps at all.

Having taught Earth Science and Astronomy for 36 years, now retired, I not
only like the linear transponders, but love to collect telemetry from the
birds too. It is not available yet, but I can't wait until they allow us to
download the whole earth orbit data from the warehouse. I want to watch the
data change as the bird goes around the earth. I used to do that with UO-11
telemetry and use the data for labs using Excel's graphing functions in my
Astronomy classes with my students.

Did you try decoding the sample wave files they provide? They allow you to
experiment getting the audio to your soundcard, then to the dashboard

I'm looking forward to the 03:41 Z pass for me later tonight.

Rick, WB3CSY in FN10

On Fri, Nov 22, 2013 at 3:43 PM, Steve Daniels <
steve at daniels270.eclipse.co.uk> wrote:

> I don't know what I am doing wrong but so far I have failed to hear FUNCUBE
> let alone decode.
> I seem to have the correct keps as I see station near me uploading.
> Am using a radio not a dongle 145.935MHz USB mode is what I am using as
> settings. Is that correct or have I made a mistake
> Steve Daniels
> Amateur Radio Callsign G6UIM
> APRSISCE/32 Beta tester and WIKI editor http://aprsisce.wikidot.com
> _______________________________________________
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Sent from Rick's gmail account

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