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2400 MHz frequency allocations

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2400 MHz frequency allocations

Rather than keeping in synch with the traditional channel numbers, might it be better to have a mesh channel at 2395 MHz, which would allow a 10 mhz BW or split it into 2  independent 5 MHz BW channels, all totally within the ham spectrum?


It would require more

It would require more invasive code edits to the core system causing longer delays.  Not a game killer but something to keep in mind.

More importantly this would put you at the band edge with no guard space to avoid transmitting outside of the ham bands and would be the bigger issue of doing 2395 with a 10MHz width while 2397 will allow a full 10mhz (though it puts the top edge right at the edge of the part 15 band (there would be a little overlap of the roll off powers but they will be lower than the primary power) or 5mhz without any  band edge concerns or interference concerns.

I wouldn't expect -2 to be the "solution" to all problems  it's hopefully going to help, but it's not intended to be the end game answer to make every link magically work. 




Also, dont forget that not

Also, dont forget that not all countries have the same frequency allocations.

New Zealand band starts at 2396MHz
Australia band starts at 2400Mhz


K5DLQ's picture
Good point Jon.

Good point Jon.

In France the band starts at

In France the band starts at 2300MHz (at least for the time being). Digital communications are mainly on 2397 and 2362MHz with a 5MHz bandwidth

Remi W5/F6CNB Texas and F6CNB near Paris France



Here in the US, the 13 cm ham

Here in the US, the 13 cm ham band used to run from 2300-2450 MHz. The 2310-2390 MHz chunk was withdrawn some time ago and given to direct satellite audio broadcasting. That left us with two noncontiguous segments, 2300-2310 and 2390-2450. 2400-2450 is of course shared with ISM devices like microwave ovens and unlicensed "Part 15" devices such as 802.11 b/g/n WiFi, Bluetooth and some cordless phones.

Originally there were two competing broadcast services, Sirus and XM, serving the continental US. Sirus uses a fleet of satellites in elliptical "tundra" orbits and XM uses geostationary satellites. The vast majority of receivers are in cars, but portable and home receivers exist. (Their programming can also be streamed over the Internet.) Sirus and XM swore up and down that they would never merge, but it wasn't long before the FCC let them do just that when they complained they'd go bankrupt otherwise. The two services now duplicate most of their programming over the two satellite systems, each supplemented by a network of terrestrial repeaters to fill in satellite coverage shadows in urban areas. I don't know how they can be profitable maintaining duplicate satellite systems.

As far as I know, the 2300-2310 MHz segment is used primarily for weak signal work, EME and the like. It's probably too small and too far away from the Part 15 band to reach easily with our devices anyway. That leaves 2390-2400 as the only segment we can easily reach that isn't also used by Part 15.

It 'll be nice in a future

It 'll be nice in a future version to allow more "negative" channels at least down to 2362MHz for european hams.Even if we may loose some of the band to cellular phone companies in the future.

I am currently running a bullet M2 HP running the beta version on 2397 with a 5MHz BW on my roof. I have much better range and speed than running either on ch1 or ch6 with the regular 20MHz BW. I am leaving 20mi south west of Paris and I am receiving about 50 APs on ch1 and 50 on ch6.

I am also running a HAMNET EUROPE AP on 2362MHz which is even quieter.

I also run one in Frelsburg Texas but I am in the middle of nowhere with a quiet  environment on 2.4GHz on ch 6

73 Remi F6CNB 

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