There were a couple of them at DCC Atlanta last year and they chewed up the 70cm band. US regulations limit to 56kbaud per carrier within 100 khz channel on 70cm. 97.307:
(6) A RTTY, data or multiplexed emission using a specified digital code listed in §97.309(a) of this part may be transmitted. The symbol rate must not exceed 56 kilobauds. A RTTY, data or multiplexed emission using an unspecified digital code under the limitations listed in §97.309(b) of this part also may be transmitted. The authorized bandwidth is 100 kHz.
------------------------------ John D. Hays K7VE PO Box 1223, Edmonds, WA 98020-1223 http://k7ve.org/blog http://twitter.com/#!/john_hays http://www.facebook.com/john.d.hays
On Fri, Jul 5, 2013 at 10:54 PM, Ronen Pinchuk drorap@netvision.net.ilwrote:
(Please trim inclusions from previous messages) _______________________________________________ First of all it uses FHSS so it is not so interfeer to the other users ... second the bandwith can be adjusted (on the throughput of course) up to 2 MHZ if i remember correct but for me the big benefit is that it allow to have a mobile connection because it does not require line of sight a thing that 2.4GHZ require and also with 0.5W on 70CM you can get much bigger distance then with a regular WIFI gear
----- Original Message ----- From: "Eric Fort" eric.fort@gmail.com To: "AMPRNet working group" 44net@hamradio.ucsd.edu Sent: Saturday, July 06, 2013 6:06 AM Subject: Re: [44net] a common vendor neutral hardware/software stack for 44net. - was Re: hardware vs. software
(Please trim inclusions from previous messages) _______________________________________________ I remember hearing about these though I'd consider these to be somewhat
of
an oddity. again why 70cm, only 30MHZ wide & already filled with other users? Why is everyone so damn scared and afraid of moving to the
amateur
microwave bands where we have 1555MHZ of mostly unused spectrum from 1.2-47.2GHz? Why must we recreate the wheel so much of the time when it may be better, faster, easier, & cheaper to use directly or adapt a solution already in use in another service.
Eric AF6EP