[TowerTalk] Wireless ISP on Ham tower

[Jim Lux]

At 12:55 PM 6/2/2006, Jim Brown wrote:
>On Fri, 2 Jun 2006 08:49:33 -0700, StellarCAT wrote:
>
> >I have a wireless router/network system in the house and it is
> >TERRIBLE for noise on the bands. Birdies all over the place.
>
>Don't be so quick to blame the wireless component of the system for
>this noise. Simple Ethernet hubs, switches, and access points
>(within PC's) are well known sources of exactly the kind of trash
>you are hearing.


or, more specifically, the switching power supplies for these devices can 
be quite noisy.  And it's not by any means consistent from unit to unit.  I 
have 5 D-link 5 port switch/hubs, bought at the same time, and the power 
supplies have different radiated noise levels.



>  Most of it is radiated by the Ethernet cable(s) and
>power cable. Some of it is radiated directly from the unshielded
>enclosure of the box.


Jim W6RMK