If throughput requirements are up to 10 Mbps, forcing a 10 Mbps Full-Duplex connection will change noise from the 125 MHz range (100Mbps with 4B5B coding) to the 20 MHz range (10Mbps with Manchester coding).
Rubens On Mon, Mar 15, 2010 at 11:36 PM, Gary Garrett <[email protected]> wrote: > I have had problems with ethernet causing noise on 145-150 Mhz also. > This was not Mikrotik anything. > > I think it is several RF sources mixing in the switch and retransmitting > a harmonic. It depends on what the combination of transmit Freqs at the > site is. Shielded cable, ferrite beads and grounding did not help. Only > physical separation stopped the problem. > > > > > On 3/15/2010 4:28 PM, Ryan Ghering wrote: >> I've got about 40 to 50 of the 750's in the field and I've not heard one >> problem from any customer, (FYI one of these customers is the local >> Volunteer Fire Dept.) I'm gona dig out my old scope and test this out >> tonight.. >> >> Ryan >> >> On Mon, Mar 15, 2010 at 5:22 PM, Kurt Fankhauser<[email protected]> wrote: >> >> >>> Will not be buying any more of them. Don't know how these things ever got >>> FCC/CE certified. Plug the ehernet into them and very broad noise is >>> emmited >>> from the 145mhz-160mhz band. Local fire chief was not very happy with what >>> this did to his 2-way radio equipment. >>> >>> > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
