[amsat-bb] Fox telemetry software question

[Mac A. Cody]

JoAnne,

I wonder if a bandpass filter might help with the performance
of your RTL-SDR dongle?  The built-in filters on these dongles
are quite broad, so even a bandpass filter covering just the
2-meter band would help reduce noise.

Are you using the pre-amp with the SDRPlay or were you using it
with the RTL-SDR dongle?  My RSP2 has a pre-amp built in and I've
used it to receive transmissions from satellites with no problem.
 From my experience the RTL-SDR dongles need a pre-amp and extra
front-end filtering for many radio applications.

73,

Mac Cody / AE5PH



On 12/22/18 8:19 AM, JoAnne K9JKM wrote:
> Good morning Ron,
>
>> Ideally I guess would be a small package with Fox Telem running on
>> Raspberry Pi like processor, tied to a SDRPlay receiver, on an omni
>> antenna.
> A pre-configured SD Card for the Raspberry Pi with the Raspbian operating
> system and FoxTelem loaded is available in the AMSAT Store:
> https://www.amsat.org/product/fox-in-a-box-raspberry-pi-sd-card/
> Just insert the SD card in your Raspberry Pi and FoxTelem starts when you
> boot up.
>
> I run the Fox In A Box with an inexpensive $20 RTL-SDR dongle. It works but
> I've discovered a better receiver like the SDR Play will give better
> results. I'm using the pre-amp that used to be in the AMSAT Store - it was
> just laying around anyways. My antenna is a spare 2 meter vertical.
>
>> I have some work yet to do with the new Gpredict
>> installation too, satellites need to be added.
> GPredict will add satellites for you ...
>
> >From the main screen select 'Edit --> Preferences'
> Then from that 'GPredict Preferences :: General' screen select the 'TLE
> Update' tab
> The TLE sources default to Celestrak, etc. I changed my TLE source to AMSAT:
> Make the TLE source http://www.amsat.org/amsat/ftp/keps/current/nasabare.txt
> on some GPredict versions you make the source:
>     http://www.amsat.org/amsat/ftp/keps/current/ and then make the file to
>     retrieve nasabare.txt
> Check the option for 'Add new satellites to local database' box. You'll get
> all of the recent satellites and every time a new satellite is added to the
> Keps it will be added at your QTH when you update the Keps. Pick the new
> satellite from the configuration view.
>
> --
> 73 de JoAnne K9JKM
> k9jkm at amsat.org
>
>
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