9 Jun
2012
9 Jun
'12
2:59 p.m.
There are two common protocols that I have used:
Olsr and open mesh (aka batman)
Both are well documented.
As far as the uhf radio cards, there are two known sources:
Xagyl communications and Doodle Labs.
According to the FCC we can run up to 10 watts in spread spectrum emission types on UHF
70cm encompassing no more than 5mhz. I am not sure of the emission type identifier
needed.
The cards from doodle labs are 200~250 us dollars.
As there is a 5mhz limit you are looking at about 5mbits of speed.
Unsure if this is "legal" in the us though. Maybe a call to the FCC office or a
nice letter as there was a bandwidth limit for
Digital emissions of 56k if I am not mistaken.
Couple it with something like a router board from ubiquiti and build a mesh and you are
killing the price of dstar with more bandwidth. Use speak freely on a multicast address
and you have hd digital voice! Point to multi point!
73 de KD5JFE
Elias