[digitalradio] Re: AX.25 modem as an infrastructure?

2009-01-17 Thread Vojtech Bubnik
Hi Misko. I strongly believe before going to actually implement something one shall explore existing systems first and if it is possible, try to simulate a new system using the existing one. I propose that you and your friends try to set up a flexnet system using fixed links at single frequency. Y

Re: [digitalradio] Re: AX.25 modem as an infrastructure?

2009-01-16 Thread Miroslav Skoric
Vojtech Bubnik wrote: > With your ad-hoc approach you would either broadcast data to all nodes > in the network (APRS approach), or broadcast routing tables (FlexNet > approach) or broadcast request to connect (I don't know any such AX.25 > system). Would you be more specific about your approach?

[digitalradio] Re: AX.25 modem as an infrastructure?

2009-01-13 Thread Vojtech Bubnik
Hi Misko. I used to play with AX.25 a lot when I was a teenager. You have two major problems when designing the kind of ad hoc network you are proposing: hidden transmitters and protocol overhead. With 1200Bd shared bandwidth you do not have much wiggle room to cope with either of them. With your