[Elecraft] OT Powerline Wifi extenders

[Josh Fiden]

The Ubiquity product uses a little power supply which includes the injector. The connections are AC line, and ethernet in/out. So to replace the power supply you’ve got a bit more of a project. Buy them from amazon. Test for noise. Return if necessary and get something else! Much easier than re-engineering a bad design. 

Josh

Sent from my mobile device

> On Oct 22, 2019, at 1:09 PM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
>> On 10/22/2019 12:56 PM, Joe Subich, W4TV wrote:
>> The typical source of noise with PoE is from the switching supply -
>> either connected to a power injector or in some terminal device
>> (e.g. Router/Modem) with the Ethernet cable acting as the antenna.
>> Common mode chokes on the Ethernet cable as close to the device as
>> possible should help but experimentation (and replacing the noisy
>> power supply) will probably be necessary.
> 
> If that is the ONLY source, it might be better to replace it with a linear supply of suitable current rating. I wouldn't be certain that it is the only source -- perhaps there's some power conversion happening at the unit (that is, up on the pole), in which case a choke there would also be required.
> 
> But that doesn't answer the key question I asked Bill -- is the system noisy or not.
> 
> 73, Jim K9YC
>