[amsat-bb] IC-9100 AO-85 Telemetry

[Burns Fisher]

Just a comment.  What AO85 telem needs is no HIGH PASS filtering down to
maybe 10 or 20 Hz.  Sometimes 9600baud output has no filtering at all (or
little) but 9600 baud packet mainly cares about no LOW PASS filtering up in
the multiple kHz range.  And at least my radio does not even spec the low
side.

You might try putting the output on a scope and then transmit using the
lowest possible CTCSS tone to see if it shows up on the scope.  (Just
suggesting CTCSS as a source of a fairly low frequency).  If you see
nothing lows are being filtered.  (I think you can also see it on the
FoxTelem display.  That would be an even better end-to-end test).
Obviously be careful not to transmit on the downlink frequency when the
satellite is nearby :-)

73,

Burns W2BFJ

On Tue, Feb 9, 2016 at 4:58 AM, Eric Knaps, ON4HF <on4hf at telenet.be> wrote:

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>     Hello,I had the same problem. Then i used the line input of the
> soundcard and it worked. If you use the mic input your audio will be
> filtered on most soundcards.Good luck,Eric ON4HF.
>     Sent with my smartphone...
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> ------ Origineel bericht------Van: Frank WestphalDatum: di, 9 feb. 2016
> 07:49Naar: Dave Webb KB1PVH;Andrew Glasbrenner;CC: AMSAT -BB;Onderwerp:Re:
> [amsat-bb] IC-9100 AO-85 Telemetry
> I turned on menu item #57 (9600bps mode) and put it into FMD mode and
> tried a 23 degree pass but did not decode any packets.On 2/8/16 1:43 PM,
> Dave Webb KB1PVH wrote:>> Also put it in FMD mode by long pressing the FM
> button.>> Dave-KB1PVH>> Sent from my Samsung
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