Re: TNC Packet Radio for OpenBSD
On Thu, Feb 26, 2009 at 08:09:44AM +0100, Marc Balmer wrote: Yes. The normal speed for packet radio over UHF/SHV is 1200 or 9600 bps, over HF usually 300 bps. Heck, a very popular tranmission technique on HF, PSK31, uses 31 bps. Thats what, about the same speed as manual-key morse? Doug.
[OT] Re: TNC Packet Radio for OpenBSD
2009/2/26 Marc Balmer m...@msys.ch: Am 26.02.2009 um 00:27 schrieb ropers: 2009/2/25 Joseph C. Bender jcben...@bendorius.com: Marc Balmer wrote: I am using a TNC7multi. http://nt-g.de/de/tnc7multi/tnc7multi.php5 The venerable KPC-3 from Kantronics is always a good choice as well. http://www.kantronics.com/products/kpc3.html Apologies if this is very naive and thoroughly uninformed (it is) and possibly stupid, but seeing this on the above page -- Data Rate (radio port) 1200 bps (default); 300, 400, 600 -- do these TNCs offer the same data transmission speeds that people used to get with early generation modems and acoustic couplers way back when? So what are people using TNCs for, then? What data are you actually exchanging this way? What are the modern-day practical applications of this technology? You're probably not using this to download install44.iso... Yes. The normal speed for packet radio over UHF/SHV is 1200 or 9600 bps, over HF usually 300 bps. Heck, a very popular tranmission technique on HF, PSK31, uses 31 bps. Maybe you should google a bit a see what TNCs are used for ;) My googling wasn't very successful (didn't use the right search terms, probably), but I found this at kantronics.com: http://www.kantronics.com/applications.html So if I get this right, then the advantages of communicating with a TNC via packet radio over cellular communications are lower cost and wider reach and coverage, and the advantages over sending the data via Iridium/satellite are much lower cost. Also, and correct me if I'm wrong, isn't it true that there are some regions even satellites don't reach? Maybe Antarctica? Presumably TNC packet radio could be used with longwave or medium wave and cover even such remote parts of the globe from very far away? I also gather that the combination of TNC packet radio with GPS equipment for instantly and continuously and cheaply available real time location data to let remote servers know just where you're at is a popular application? Don't feel pressed to answer unless you feel like it; I'm just wondering aloud; though if anyone would love to elaborate, that would be more than welcome. Thanks and kind regards, --ropers
Re: TNC Packet Radio for OpenBSD
Marc Balmer wrote: I am using a TNC7multi. http://nt-g.de/de/tnc7multi/tnc7multi.php5 The venerable KPC-3 from Kantronics is always a good choice as well. http://www.kantronics.com/products/kpc3.html -- Joseph Bender N8XRE
Re: TNC Packet Radio for OpenBSD
2009/2/25 Joseph C. Bender jcben...@bendorius.com: Marc Balmer wrote: I am using a TNC7multi. http://nt-g.de/de/tnc7multi/tnc7multi.php5 The venerable KPC-3 from Kantronics is always a good choice as well. http://www.kantronics.com/products/kpc3.html Apologies if this is very naive and thoroughly uninformed (it is) and possibly stupid, but seeing this on the above page -- Data Rate (radio port) 1200 bps (default); 300, 400, 600 -- do these TNCs offer the same data transmission speeds that people used to get with early generation modems and acoustic couplers way back when? So what are people using TNCs for, then? What data are you actually exchanging this way? What are the modern-day practical applications of this technology? You're probably not using this to download install44.iso... regards, --ropers
Re: TNC Packet Radio for OpenBSD
Am 26.02.2009 um 00:27 schrieb ropers: 2009/2/25 Joseph C. Bender jcben...@bendorius.com: Marc Balmer wrote: I am using a TNC7multi. http://nt-g.de/de/tnc7multi/tnc7multi.php5 The venerable KPC-3 from Kantronics is always a good choice as well. http://www.kantronics.com/products/kpc3.html Apologies if this is very naive and thoroughly uninformed (it is) and possibly stupid, but seeing this on the above page -- Data Rate (radio port) 1200 bps (default); 300, 400, 600 -- do these TNCs offer the same data transmission speeds that people used to get with early generation modems and acoustic couplers way back when? So what are people using TNCs for, then? What data are you actually exchanging this way? What are the modern-day practical applications of this technology? You're probably not using this to download install44.iso... Yes. The normal speed for packet radio over UHF/SHV is 1200 or 9600 bps, over HF usually 300 bps. Heck, a very popular tranmission technique on HF, PSK31, uses 31 bps. Maybe you should google a bit a see what TNCs are used for ;) regards, --ropers
TNC Packet Radio for OpenBSD
I just got a radio for my car and it is capable to handling TNC tranceiver traffic. So, now I'm on a search for a decent packet radio, but it looks like the only ones I've found are Windows only. It not as concerned with the software as I am with the HW being detected correctly, although having both work with be nice. Any suggestions are welcome. Thanks Dan N2VQV
Re: TNC Packet Radio for OpenBSD
Am 24.02.2009 um 16:23 schrieb Dan Colish: I just got a radio for my car and it is capable to handling TNC tranceiver traffic. So, now I'm on a search for a decent packet radio, but it looks like the only ones I've found are Windows only. It not as concerned with the software as I am with the HW being detected correctly, although having both work with be nice. Any suggestions are welcome. A decent TNC uses a serial port or USB, I am using such a thingie and it works nicely. OpenBSD does not directly support AX.25. Thanks Dan N2VQV Marc HB9SSB
Re: TNC Packet Radio for OpenBSD
On Tue, Feb 24, 2009 at 05:50:55PM +0100, Marc Balmer wrote: Am 24.02.2009 um 16:23 schrieb Dan Colish: I just got a radio for my car and it is capable to handling TNC tranceiver traffic. So, now I'm on a search for a decent packet radio, but it looks like the only ones I've found are Windows only. It not as concerned with the software as I am with the HW being detected correctly, although having both work with be nice. Any suggestions are welcome. A decent TNC uses a serial port or USB, I am using such a thingie and it works nicely. OpenBSD does not directly support AX.25. Thanks Dan N2VQV Marc HB9SSB Marc, Thanks for the tips. I've been checking out a varity of tncs that are available online. The choices seem endless. What particular model do you use? Dan
Re: TNC Packet Radio for OpenBSD
Am 24.02.2009 um 19:41 schrieb Dan Colish: On Tue, Feb 24, 2009 at 05:50:55PM +0100, Marc Balmer wrote: Am 24.02.2009 um 16:23 schrieb Dan Colish: I just got a radio for my car and it is capable to handling TNC tranceiver traffic. So, now I'm on a search for a decent packet radio, but it looks like the only ones I've found are Windows only. It not as concerned with the software as I am with the HW being detected correctly, although having both work with be nice. Any suggestions are welcome. A decent TNC uses a serial port or USB, I am using such a thingie and it works nicely. OpenBSD does not directly support AX.25. Thanks Dan N2VQV Marc HB9SSB Marc, Thanks for the tips. I've been checking out a varity of tncs that are available online. The choices seem endless. What particular model do you use? I am using a TNC7multi. http://nt-g.de/de/tnc7multi/tnc7multi.php5 Dan 0x49, Marc
