[Elecraft] OT Powerline Wifi extenders

[Bill Steffey]

some of the ubiquiti poe supplies are noisy...  some not.

Since I have 5 poe access points pointing in different directions, i 
have two  third party power hubs   one a 24vdc  one a 48 vdc ... both 
carry CE markings as does the last Ubiquiti POE ps I used.   I do 
remember back a while I did have ferrites on both sides of one early 
switchers.


Also my HF antennas are at at least 50 feet away , with the tower 140 
feet out.

No broadband available for about three miles away.  So much for RURAL 
BROADBAND.

having to deal with a bit of rfi supression is a small price to pay for 
having broadband.

On 10/22/2019 4:09 PM, Jim Brown 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
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to ny9h at arrl.net