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<k...@wavelinc.com>  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: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/

Reply via email to