Signalink Modification for 9600 baud
based on discussion with a technician at Tigertronics, the USB signalink will not allow 9600 baud packet due to the frequency response is too narrow. He said none of the commercial external soundcards will work with 9600 bd packet. The only option is to construct a circuit, or use a 9600 baud TNC. (not too many options on that front.)
the Tigertronics website is a bit miss-leading because it ref. 9600 baud on its wiring diagram. Mine is setup for the 6pin miniDin connector(the pin 4 - for 9600 bd on my radio dataport- is not connected) for my FT 847. At this time I can only decode by connecting the 9600 pin on my radio (dataport) to a line-in to my Laptop soundcard (and not using a isolation circuit).
It would be nice to hear of any solution to this, without buying a $400 TNC (kantronics 9612).
there are several websites that talk to this issue, here is one of them
https://www.soundcardpacket.org/5modes.aspx
73 Christy KB6LTY
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It would be nice to hear of any solution to this, without buying a $400 TNC (kantronics 9612).
Hmmm, for a satellite that spends 5 minutes twice a day higher than 20 degrees (from Chicago) I'd say I'm likely not to be found on said satellite.
-- 73 de JoAnne K9JKM k9jkm@amsat.org
Well that's interesting.
I've used a USB Signalink with an Icom IC-9100 and hs-soundmodem to successfully decode 9600 from Falconsat-3. To my knowledge, the Signalink has not been modified.
73, Rick VK6RK
On 12/10/2017 05:55, christy hunter wrote:
based on discussion with a technician at Tigertronics, the USB signalink will not allow 9600 baud packet due to the frequency response is too narrow. He said none of the commercial external soundcards will work with 9600 bd packet. The only option is to construct a circuit, or use a 9600 baud TNC. (not too many options on that front.)
the Tigertronics website is a bit miss-leading because it ref. 9600 baud on its wiring diagram. Mine is setup for the 6pin miniDin connector(the pin 4 - for 9600 bd on my radio dataport- is not connected) for my FT 847. At this time I can only decode by connecting the 9600 pin on my radio (dataport) to a line-in to my Laptop soundcard (and not using a isolation circuit).
It would be nice to hear of any solution to this, without buying a $400 TNC (kantronics 9612).
there are several websites that talk to this issue, here is one of them
https://www.soundcardpacket.org/5modes.aspx
73 Christy KB6LTY
Just looking at specs.
9.6 Khz baud packet needs (per G3RUH spec) •Response to DC •Response no worse than -4 db at 4.8 kHz •No worse than -10 db at 7.2 kHz
The Tigertronics spec's say audio response 300 Hz to 3.3KHz - ouch Depending on how quickly the audio response curve rolls off the Signallink is kind of iffy for 9.6K . Some folks have gotten it to work.
This outfit has an isolation transformer spec'ed 20 to 20KHz. A little pricey, but it is stereo so TX and RX audio are covered with a single unit
http://www.fullcompass.com/prod/097486-Radio-Design-Labs-AVHK1
For just RX, a dongle, HDSDR and hs_soundmodem do a great job .
Dave W0DHB
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of christy hunter Sent: Wednesday, October 11, 2017 15:55 To: amsat-bb@amsat.org Subject: [amsat-bb] Signalink Modification for 9600 baud
based on discussion with a technician at Tigertronics, the USB signalink will not allow 9600 baud packet due to the frequency response is too narrow. He said none of the commercial external soundcards will work with 9600 bd packet. The only option is to construct a circuit, or use a 9600 baud TNC. (not too many options on that front.)
the Tigertronics website is a bit miss-leading because it ref. 9600 baud on its wiring diagram. Mine is setup for the 6pin miniDin connector(the pin 4 - for 9600 bd on my radio dataport- is not connected) for my FT 847. At this time I can only decode by connecting the 9600 pin on my radio (dataport) to a line-in to my Laptop soundcard (and not using a isolation circuit).
It would be nice to hear of any solution to this, without buying a $400 TNC (kantronics 9612).
there are several websites that talk to this issue, here is one of them
https://www.soundcardpacket.org/5modes.aspx
73 Christy KB6LTY
--- This email has been checked for viruses by AVG. http://www.avg.com
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I have 2 or 3 9600 baud capable TNC's at my winter home in Florida. When I retired and downsized 3 years ago I sold a lot of my ham related stuff. The TNC's weren't a popular item, but now they are! When I get back down there in a few weeks for the winter I'm going to bring my IC-9100 with me and get back on the PACSAT's. I will then have two left, they will be going up for sale. Price will be very reasonable. Anyone want one let me know off list.
73 Jeff kb2m
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of christy hunter Sent: Wednesday, October 11, 2017 5:55 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Signalink Modification for 9600 baud
based on discussion with a technician at Tigertronics, the USB signalink will not allow 9600 baud packet due to the frequency response is too narrow. He said none of the commercial external soundcards will work with 9600 bd packet. The only option is to construct a circuit, or use a 9600 baud TNC. (not too many options on that front.)
the Tigertronics website is a bit miss-leading because it ref. 9600 baud on its wiring diagram. Mine is setup for the 6pin miniDin connector(the pin 4 - for 9600 bd on my radio dataport- is not connected) for my FT 847. At this time I can only decode by connecting the 9600 pin on my radio (dataport) to a line-in to my Laptop soundcard (and not using a isolation circuit).
It would be nice to hear of any solution to this, without buying a $400 TNC (kantronics 9612).
there are several websites that talk to this issue, here is one of them
https://www.soundcardpacket.org/5modes.aspx
73 Christy KB6LTY
--- This email has been checked for viruses by AVG. http://www.avg.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
participants (5)
-
christy hunter -
David W0DHB -
jeff griffin -
JoAnne Maenpaa -
Rick Kowalewski