Packet Radio 2016

Data at 1200 baud?    That's plain and simple baud - not Mega bauds or Giga Bauds..   Crazy?  Maybe not.  Much of what we do when Video isn't involved can be handled with slow and simple systems.

If we do it right...

Here's a start of a fresh look at  putting 1980's data technology to real use.

1. No more than one digipeater.   
2. Use APRS for resource discovery.
3. Separate users and data backhaul.  Shared channels cause exponential degregation of performance.
4. Use full duplex digipeaters for wide area resources.
5. Use DAMA style resource management. 
6. Move away from fixed mode hardware TNC's.  Soundcard packet options are here and offer higher speeds and better data simply by changing the software.
7. much more...

We Need Radios - Data Radios!

We Hams need more radios..    Not big fancy expensive shortwave radios.   Not cute little cheap walkie talkies.   We need data radios.   It's the data age yet for ham radio the good stuff was on the market twenty years ago.

Options

• UHF, VHF, 50 MHz, 144 MHz, 222 MHz or 440 MHz..   We need them all!   Various bands have different rules and characterists.   Given that, 440 MHz would be the best start.
• Variable programmable frequency operation please.  Crystals are so expensive and so slow to order.   Ideally frequency could be set by program operation but that's a Want and not a Need.
• Power - not a lot, not a little..   5 watts might be low.  Couldn't go wrong with 10 watts.
• Voice and Data.   Older radios had voice modes.  That's nice but not needed.
• Examples of the past
• Kantronics D4-10   10 watts on 440 MHz.   9600 or 19200 modulation. Add programmable frequency operation and a reasonable price - this would be a break through product.  Febo Notes
• Kantronics D2-2
• MFJ 9641  (220, 144, 440)
• Ritron embedded radio - http://www.ritron.com/pdf/dtxpl.pdf
• 1200 baud support, like voice, would be nice but it shouldn't distract from the primary goal of a good reasonable speed data radio.

Other Notes

• Can any of the existing radios with 6 pin DIN data jacks support speeds higher than 9600?   For example, will the Kenwood D700 or D710 support 19200?
• Alinco single band radios with 9600 data input/output - 
• Modems for higher speed radios:
• SCS DSP Tracker TNC - 19200 G3RUH - Farallon  (free shipping and same price at HRO)
• UZ7HO Soundcard - http://uz7.ho.ua/packetradio.htm

MRTG running

Yeah - we're back...   Many years ago we had MRTG graphs for the various Wetnet LANS.   Now, thanks to our little TCP on packet project and the addition of SNMP info in JNOS - we're once again collecting and plotting data.   This is the 9600 baud UHF APRS channel in the Puget Sound region...

I should have waited a couple days to get better charts with more data - but what the heck - it's cool to have these running again.   It's not live on the internet - internal only for now..

Now to figure out how to do this on the NW-MESH boxes.   Let's see if we can move the left column from Bytes per Second to Megabytes per Second..

JNOS does B2F

Thank you Maiko!!! This is a big thing. Personally I'll have it installed and running by the end of the day.

Bill

-----

Greetings to all,

Here is another snapshot of my development system, which now includes full support for B2F forwarding (and attachments). Please READ the link to 'details / how to compile' for full details. It contains information on new commands, enhancements, bugs that still exist with the B2F code, and other information that *might* be of use.

You can use Airmail telnet (internet access) module to forward with the JNOS 2.0f2 software if you want. If anyone feels ambitious, why not try out a JNOS 2.0f2 <-> JNOS 2.0f2 forwarding session using the new B2F mode. I have not tried JNOS to JNOS yet :)

This is BETA - use at your risk. Download patch and details at :

http://www.langelaar.net/projects/jnos2/latest.html

As usual, this is experimental, so expect the unexpected.

Please report ANY problems to me (off list please). Thank you.

Maiko Langelaar / VE4KLM
http://www.langelaar.net


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