[OZAPRS] HF APRS with linux soundmodem.

[Steve]

Soundmodem and Xastir is simple to install and set up on popular Linux 
distro's as  most of them have ready-made packages (i.e. an apt-get 
install or yum install usually works).
If you want to build from source, soundmodem is easy, but Xastir has a 
few prerequisite packages that must be installed before building.
Soundmodem has a nice setup program call soundmodemconfig that does all 
the hard work of setting up the interface, etc. Xastir is pretty simple 
to set up from that point using /dev/soundmodem0 as the TNC device. I 
use the soundmodem/Xastir combination on everything from desktop PCs to 
my little EeePC and it works well.
That's why I'm so annoyed that I can't decode any HF packets!

Happy to help (if I can) with Soundmodem/Xastir/VHF setup if you contact 
me off list.

Anyone got this working on HF though?

Steve.

David wrote:
> Hi Steve...i have a friend who wants to use a soundcard and soundmodem 
> with APRS and Xastir......
> how did u use soundmodem for 1200bps VHF APRS......is there a simple 
> way or do you have to add all the ax25 files and configs etc....
>
> tnx for your help
>
> 73 David VK4BDJ
>
>
>
> Steve wrote:
>> Hello all,
>>
>> I've been using the open source "soundmodem" software 
>> (www.baycom.org/~tom/ham/soundmodem/) under Linux for 1200bps/VHF 
>> APRS for years. I've never had a problem with it on VHF at all. In 
>> fact, I've never even used a real TNC.
>>
>> However, I have never successfully decoded a packet on 300bps HF. I 
>> can audibly hear data on 10.147.6 USB, and I have the soundmodem 
>> software set up for AFSK, 300bps, tone 1 = 1600Hz, tone 2 = 1800Hz. 
>> Everything looks good on the in-built scope and spectrum displays.
>>
>> If anyone else out there is using soundmodem under a Unix-ish OS, and 
>> has actually been able to use it on HF, I could really do with some 
>> pointers!
>> If someone (who has a working system) could show me what they have 
>> configured in /etc/ax25/soundmodem.conf it would help a lot.
>>
>> Thanks very much in advance,
>>
>> Steve (VK2ZSZ).
>>
>>
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>
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