Decoding AO-85 from IC-910H 9600 data socket - any success anyone?
Hi,
Congrats to the AO-85 team!
Trying to decode telemetry using the 9600 output of the sub data (while radio is in Sat mode) from my IC-910H. Has anyone been able to do this? High elevation passes only?
9600 output is connected directly to mic input. No isolation transformers, etc. Seems like those making progress have gone the SDR route with IQ data?
Sound card input - 2 channel (L-R channels connected on cable), 24 bit, 48000 Hz
radio - cable to sub band data socket. 9600 bps transmission on. (Is this for TX only, does not change output and can be left of?)
AO-85 software
Source - mic input, 4800
start --> no joy,
Suggestions welcome.
Thanks, es 73
Bob N6RFM [email protected]
Bob,
So far I have uploaded 276 frames of telemetry using the 9600 port of the sub-band on my IC910h. This is wired directly to the "Line-In" of my desk top computer.
I would not recommend using the "Mic-In" jack, or a laptop computer. The 9600 port is used because it offers less filtering of the 0-200 Hz of the audio band pass. This is the portion that is filtered heavily to make PL tones sub audible in the radio , as well as remove 60 Hz and its 3rd at 180 Hz from the microphone input.
BOB KO6TZ
Hi,
Congrats to the AO-85 team!
Trying to decode telemetry using the 9600 output of the sub data (while radio is in Sat mode) from my IC-910H. Has anyone been able to do this? High elevation passes only?
9600 output is connected directly to mic input. No isolation transformers, etc. Seems like those making progress have gone the SDR route with IQ data?
Sound card input - 2 channel (L-R channels connected on cable), 24 bit, 48000 Hz
radio - cable to sub band data socket. 9600 bps transmission on. (Is this for TX only, does not change output and can be left of?)
AO-85 software
Source - mic input, 4800
start --> no joy,
Suggestions welcome.
Thanks, es 73
Bob N6RFM
Bob,
Thanks for the response. Was using my desktop "mic-in" jack. Soundcard is a built in on my Dell Optiplex 755. Very limited functionality with driver provided, i.e., poor mic input level control and (my) concerns that sub-audible frequencies lost.
So, switched to a cheap USB soundcard (Begringer UCA202) which happened to be on-hand. Claimed OK down to 10 Hz. Not fancy, but can input control level.
TADA! Works!
73 es tks agn,
Bob
---------------
From: KO6TZ Bob[email protected] To:[email protected] Subject: Re: [amsat-bb] Decoding AO-85 from IC-910H 9600 data socket - any success anyone? Message-ID:[email protected] Content-Type: text/plain; charset=utf-8; format=flowed
Bob,
So far I have uploaded 276 frames of telemetry using the 9600 port of the sub-band on my IC910h. This is wired directly to the "Line-In" of my desk top computer.
I would not recommend using the "Mic-In" jack, or a laptop computer. The 9600 port is used because it offers less filtering of the 0-200 Hz of the audio band pass. This is the portion that is filtered heavily to make PL tones sub audible in the radio , as well as remove 60 Hz and its 3rd at 180 Hz from the microphone input.
BOB KO6TZ
On 10/10/2015 10:30, Bob Mattaliano wrote:
Hi,
Congrats to the AO-85 team!
Trying to decode telemetry using the 9600 output of the sub data (while radio is in Sat mode) from my IC-910H. Has anyone been able to do this? High elevation passes only?
9600 output is connected directly to mic input. No isolation transformers, etc. Seems like those making progress have gone the SDR route with IQ data?
Sound card input - 2 channel (L-R channels connected on cable), 24 bit, 48000 Hz
radio - cable to sub band data socket. 9600 bps transmission on. (Is this for TX only, does not change output and can be left of?)
AO-85 software
Source - mic input, 4800
start --> no joy,
Suggestions welcome.
Thanks, es 73
Bob N6RFM [email protected]
Hello,
I also wanted to try decoding the Fox telemetry with my IC-910H without any luck. My 9600 data socket was connected to my"mic in" on my desktop computer. Changed to "line in" on my sound card. Wow! What a difference! On the last pass I decoded 113 frames.
By the way, thanks Bob for the contact on AO-7 a few days ago.
73, Eric.
Amateur radio station ON4HF Satellite manager UBA Member Amsat-NA Member Amsat-UK Member Amsat-ON
Op 11/10/2015 om 14:57 schreef Bob Mattaliano:
Bob,
Thanks for the response. Was using my desktop "mic-in" jack. Soundcard is a built in on my Dell Optiplex 755. Very limited functionality with driver provided, i.e., poor mic input level control and (my) concerns that sub-audible frequencies lost.
So, switched to a cheap USB soundcard (Begringer UCA202) which happened to be on-hand. Claimed OK down to 10 Hz. Not fancy, but can input control level.
TADA! Works!
73 es tks agn,
Bob
From: KO6TZ Bob[email protected] To:[email protected] Subject: Re: [amsat-bb] Decoding AO-85 from IC-910H 9600 data socket - any success anyone? Message-ID:[email protected] Content-Type: text/plain; charset=utf-8; format=flowed
Bob,
So far I have uploaded 276 frames of telemetry using the 9600 port of the sub-band on my IC910h. This is wired directly to the "Line-In" of my desk top computer.
I would not recommend using the "Mic-In" jack, or a laptop computer. The 9600 port is used because it offers less filtering of the 0-200 Hz of the audio band pass. This is the portion that is filtered heavily to make PL tones sub audible in the radio , as well as remove 60 Hz and its 3rd at 180 Hz from the microphone input.
BOB KO6TZ
On 10/10/2015 10:30, Bob Mattaliano wrote:
Hi,
Congrats to the AO-85 team!
Trying to decode telemetry using the 9600 output of the sub data (while radio is in Sat mode) from my IC-910H. Has anyone been able to do this? High elevation passes only?
9600 output is connected directly to mic input. No isolation transformers, etc. Seems like those making progress have gone the SDR route with IQ data?
Sound card input - 2 channel (L-R channels connected on cable), 24 bit, 48000 Hz
radio - cable to sub band data socket. 9600 bps transmission on. (Is this for TX only, does not change output and can be left of?)
AO-85 software
Source - mic input, 4800
start --> no joy,
Suggestions welcome.
Thanks, es 73
Bob N6RFM [email protected]
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participants (3)
-
Bob Mattaliano -
Eric Knaps, ON4HF -
KO6TZ Bob