[amsat-bb] Re: Decoding wideband recordings

2011-08-18 Thread Patrick Strasser OE6PSE
Am 2011-08-10 00:54, schrieb Phil Karn: It's been suggested that I modify my ARISSat-1 BPSK-1000 telemetry demodulator/decoder to accept wideband quadrature (I Q) recordings like those produced by most of the software defined radios out there. This is fundamentally not that hard, but first

[amsat-bb] Re: Decoding wideband recordings

2011-08-18 Thread Phil Karn
On 8/18/11 8:15 AM, Patrick Strasser OE6PSE wrote: For decoding please be aware that I/Q via sound interfaces has a weak spot at the centre frequency. The interfaces all have a high pass characteristic below like 30Hz, which means the resulting spectrum has a Yes, I'm familiar with this. I

[amsat-bb] Re: Decoding wideband recordings

2011-08-17 Thread Tom Azlin N4ZPT
Thanks Bruce. I think I need to go get a preamp and filter! And try again. 73, tom n4zpt On 8/14/2011 12:06 PM, Bruce Robertson wrote: On Sat, Aug 13, 2011 at 7:07 PM, Phil Karnk...@philkarn.net wrote: On 8/10/11 8:24 PM, Tom Azlin N4ZPT wrote: I have a Fun Cube Dongle so I would Phil.

[amsat-bb] Re: Decoding wideband recordings

2011-08-15 Thread Mike Rupprecht
Sion, another point to the DDE aspect: just working on the DDE link between SATCONTROL and HDSDR. At the moment HDSDR supports only Orbitron (Doppler tracking interval 1s), HRD and WXtrack. If I change the application name of SATCONTROL to Orbitron, the link can be established and it works. The

[amsat-bb] Re: Decoding wideband recordings

2011-08-15 Thread Sion Chow Q. C. (9W2QC)
Mike, First of all, thank you for the very great software :) Just to clarify, in this case you will be tuning dopper at HDSDR instead of FCD control level? Which if I get it right will result in the I/Q of the pass being recorded without doppler control? 73, Sion, 9M2CQC Quoting Mike

[amsat-bb] Re: Decoding wideband recordings

2011-08-15 Thread Mike Rupprecht
. (9W2QC) [mailto:9w...@9w2qc.net] Gesendet: Montag, 15. August 2011 10:47 An: Mike Rupprecht Cc: amsat-bb@amsat.org Betreff: Re: AW: [amsat-bb] Re: Decoding wideband recordings Mike, First of all, thank you for the very great software :) Just to clarify, in this case you will be tuning dopper at HDSDR

[amsat-bb] Re: Decoding wideband recordings

2011-08-14 Thread Bruce Robertson
On Sat, Aug 13, 2011 at 7:07 PM, Phil Karn k...@philkarn.net wrote: On 8/10/11 8:24 PM, Tom Azlin N4ZPT wrote: I have a Fun Cube Dongle so I would Phil. Thanks and 73, Tom n4zpt Okay, everybody make and keep your wideband I/Q recordings and I'll work on an enhancement to my

[amsat-bb] Re: Decoding wideband recordings

2011-08-14 Thread Al Bolduc
Try the following #!/bin/bash # # Record sdr data from FunCube Dongle. # # Usage: fcd_record extra_options filename # example: fcd_record --duration=60 tt.wav # DEV=--device=hw:3 OPTIONS=--format=S16_LE --channels=2 --rate=96000 arecord $DEV $OPTIONS $@ On Sun, 14

[amsat-bb] Re: Decoding wideband recordings

2011-08-14 Thread Sion Chow Q. C. (9W2QC)
Quoting Bruce Robertson ve9...@gmail.com: On Sat, Aug 13, 2011 at 7:07 PM, Phil Karn k...@philkarn.net wrote: On 8/10/11 8:24 PM, Tom Azlin N4ZPT wrote: I have a Fun Cube Dongle so I would Phil. Thanks and 73, Tom n4zpt Okay, everybody make and keep your wideband I/Q recordings and I'll

[amsat-bb] Re: Decoding wideband recordings

2011-08-13 Thread Phil Karn
On 8/10/11 8:24 PM, Tom Azlin N4ZPT wrote: I have a Fun Cube Dongle so I would Phil. Thanks and 73, Tom n4zpt Okay, everybody make and keep your wideband I/Q recordings and I'll work on an enhancement to my demodulation/decoding software to process them. It may not run in real time on slower

[amsat-bb] Re: Decoding wideband recordings

2011-08-10 Thread Gordon JC Pearce
On Tue, 09 Aug 2011 15:54:15 -0700 Phil Karn k...@philkarn.net wrote: It's been suggested that I modify my ARISSat-1 BPSK-1000 telemetry demodulator/decoder to accept wideband quadrature (I Q) recordings like those produced by most of the software defined radios out there. This is

[amsat-bb] Re: Decoding wideband recordings

2011-08-10 Thread Iain Young, G7III
On 09/08/11 23:54, Phil Karn wrote: It's been suggested that I modify my ARISSat-1 BPSK-1000 telemetry demodulator/decoder to accept wideband quadrature (I Q) recordings like those produced by most of the software defined radios out there. This is fundamentally not that hard, but first I

[amsat-bb] Re: Decoding wideband recordings

2011-08-10 Thread Tom Azlin N4ZPT
I have a Fun Cube Dongle so I would Phil. Thanks and 73, Tom n4zpt On 8/9/2011 6:54 PM, Phil Karn wrote: It's been suggested that I modify my ARISSat-1 BPSK-1000 telemetry demodulator/decoder to accept wideband quadrature (I Q) recordings like those produced by most of the software defined