[amsat-bb] Re: Recommended TNC

[MM]

Normal TNC protocol is commonly called AX.25.  
The most common speed for satellite AX.25 is 1200 baud.
Occasionally 9600 baud.

A quick look at the Amsat page list 6 satellites currently running ax.25
Castor, Stars,  KKS-1,  Oscar-66, Oscar-65,  and ISS.
There may be more, that was just a quick look.

I have had great luck with Kantronics, KPC-3 and KPC-9612.  I even installed a KPC-9612 on board the Russian space station Mir. 
http://www.marexmg.org/marexmirweb/fileshtml/pmsupgrade.html


The KPC-9612 was also used in PC-Sat1 http://www.aprs.org/pcsat.html

ISS does have packet, unfortunately the software loaded in December 2003 enabled the criss-cross radio mode on the TM-D700.  This mode caused a significant performance hit and has rendered Packet Mail virtually useless. 
And causes the Digi-repeater mode to have a 1-2 second delay and other issues.

http://www.marexmg.org/fileshtml/ISSPacketD700.html

WF1F  www.marexmg.org


--- On Tue, 2/2/10, Sean Cavanaugh <seanc at unixgeeks..ca> wrote:

> From: Sean Cavanaugh <seanc at unixgeeks.ca>
> Subject: [amsat-bb] Re: Recommended TNC
> To: amsat-bb at amsat.org
> Date: Tuesday, February 2, 2010, 1:37 PM
> On 02/02/2010 11:12 AM, Michael
> Wolthuis wrote:
> > Can anyone point me to the recommended TNC for adding
> to an FT-847 for
> > digital satellite work?  Are there special
> modifications needed?  What
> > connector does it use on the FT-847?
> >
> > Thanks,
> > Mike
> > kb8zgl
>