[aprssig] linux sound card modem/tnc assist

Matt VK2RQ matt.vk2rq at gmail.com
Wed Jan 29 17:20:47 CST 2014


Are you doing this on VHF 1200bps, or HF 300bps? If the latter, there are some restrictions on the linux sound card modem implementation at 300bps -- both the tones need to be below 1200Hz. If this is a problem for you, the following patch may be useful:
http://www.vk2rq.ampr.org/soundmodem_300baud.patch

73, Matt VK2RQ

On 30 Jan 2014, at 9:56 am, Curt, WE7U <curt.we7u at gmail.com> wrote:

> On Wed, 29 Jan 2014, Chris Howard w0ep wrote:
> 
>> The old Thomas Sailor linux sound card modem will do that.
>> 
>> https://groups.google.com/forum/#!topic/rec.radio.amateur.digital.misc/QKDY_xQSrr0
> 
> http://www.xastir.org/wiki/HowTo:SoundModem
> 
> -- 
> Curt, WE7U.        http://wetnet.net/~we7u
> APRS Client Capabilities:  http://wetnet.net/~we7u/aprs_capabilities.html
> _______________________________________________
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> aprssig at tapr.org
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