I decided to try receiving and decoding the AO-85 Data Under Voice telemetry, but it's not working. I suspect it's because my radio is filtering out the frequencies below 200 HZ. So, what are folks doing to get this telemetry? If you want to just point me to an old thread on the forum or a file on the AMSAT site, I'm OK with that.
Steve Kristoff AI9IN skristof@etczone.com
An RTL-SDR dongle or other SDR works great.
Most HTs don't provide unfiltered FM output unless they are advertised as 9600 baud packet ready. Many mobile radios do, again, if they are advertised as 9600 baud packet ready.
73,
Paul, N8HM
On Fri, Feb 5, 2016 at 8:04 AM, Steve Kristoff skristof@etczone.net wrote:
I decided to try receiving and decoding the AO-85 Data Under Voice telemetry, but it's not working. I suspect it's because my radio is filtering out the frequencies below 200 HZ. So, what are folks doing to get this telemetry? If you want to just point me to an old thread on the forum or a file on the AMSAT site, I'm OK with that.
Steve Kristoff AI9IN skristof@etczone.com
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I've been considering getting one of those. That might just be the excuse that I need. Thank you, Paul!
Can you recommend a couple or list a couple to avoid? I tend to be cheap (and regretting it a significant amount of the time).
Other suggestions and ideas are still welcome.
Steve AI9IN
On 2016-02-05 08:10, Paul Stoetzer wrote:
An RTL-SDR dongle or other SDR works great.
Most HTs don't provide unfiltered FM output unless they are advertised as 9600 baud packet ready. Many mobile radios do, again, if they are advertised as 9600 baud packet ready.
73,
Paul, N8HM
On Fri, Feb 5, 2016 at 8:04 AM, Steve Kristoff skristof@etczone.net wrote:
I decided to try receiving and decoding the AO-85 Data Under Voice telemetry, but it's not working. I suspect it's because my radio is filtering out the frequencies below 200 HZ. So, what are folks doing to get this telemetry? If you want to just point me to an old thread on the forum or a file on the AMSAT site, I'm OK with that. Steve Kristoff AI9IN skristof@etczone.com _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb [1]
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb [1]
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Steve,
The FUNcube Dongle Pro+ is probably the best option if you are wanting to copy telemetry from AO-85 or AO-73. AMSAT's FoxTelem software for AO-85, along with the FUNcube Dashboard for AO-73, are designed to directly control that dongle. The FUNcube Dongle Pro+ is also a good receiver for working other satellites.
Another good option would be the SDRplay receiver. This performs well for satellite work, but you would need to use another program to control the SDRplay, along with a virtual audio cable to tie that program to either FoxTelem or the FUNcube Dashboard. The SDRplay can't be controlled directly by FoxTelem or the FUNcube Dashboard.
The inexpensive "RTL-SDR" dongles could also be used, but these lack the front-end filtering of the FUNcube Dongle Pro+ and the SDRplay. For receive-only situations, the "RTL-SDR" dongles might be an option. You would have to use a program like HDSDR or SDR Sharp to control the dongle, then a virtual audio cable to tie that program to FoxTelem or the FUNcube Dashboard. But if you have any intentions of using an SDR receiver/dongle as part of a station where you will transmit to satellites, you would probably want to avoid these dongles.
The FUNcube Dongle Pro+ is sold by its UK-based manufacturer, through its http://www.funcubedongle.com/ web site. With shipping to the USA via FedEx, these cost around US$ 190 to US$ 200 depending on exchange rates. The SDRplay receivers cost US$ 149 from HRO stores, or they can also be purchased directly from SDRplay in the UK for the same price plus an additional shipping charge.
Good luck, and 73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK
On Fri, Feb 5, 2016 at 2:17 PM, skristof@etczone.com wrote:
I've been considering getting one of those. That might just be the excuse that I need. Thank you, Paul!
Can you recommend a couple or list a couple to avoid? I tend to be cheap (and regretting it a significant amount of the time).
participants (4)
-
Patrick STODDARD (WD9EWK/VA7EWK) -
Paul Stoetzer -
skristof＠etczone.com -
Steve Kristoff