[Elecraft] Mysterious K3 Symptoms - RFI?

Dave New, N8SBE n8sbe at densbe.com
Wed Mar 13 19:38:51 EDT 2024


Try upgrading your WiFi to 5 GHz, which has a few hundred channels 
available.

2.4 GHz Wifi has only a dozen channels, and practically, you can only 
use 3 of them in a crowded situation, due to overlap of adjacent 
channels.  2.4 GHz WiFi is a disaster in crowded situations, as you've 
found out.  Moving to 5 GHz units will solve all your WiFi over-crowding 
situations.

If you have an Android phone, download WiFi Analyer app so you can see 
the channels in use around you, both 2.4 and 5 GHz.

I use an eero mesh WiFi 6 network, and there is no latency due to the 
WiFi, which is actually capable of higher speeds than our ISP, which is 
300 Mb up/dn fiber-to-the-home (upgradable to 1 Gb up/dn without any 
hardware upgrades).

Any wired ethernet in my house is 1 Gb, which has much less interference 
potential than the older 100 Mb stuff.  I use shielded metal-case 
Netgear routers.

73,

-- Dave, N8SBE

On 2024-03-13 12:58, Bayard Coolidge, N1HO via Elecraft wrote:
> Unfortunately, with the high population density in my immediate 
> neighborhood, especially with 150+ condominium apartments right next 
> door, I have a difficult time getting a reliable wi-fi connection to my 
> home network. I'm about 900 feet (240m) west of the Intracoastal 
> Waterway, and have 2, 3, 5 and 7 floor condo buildings between me and 
> the ICW. To the north, west and south, I have single-family homes. 
> Along the south (i.e., rear) side of our house lot, I have 7.5kV 
> 3-phase power lines overhead, which feed the homes on the block south 
> of us; we're fed by underground feeders installed 2 years ago. To make 
> matters more interesting, we have a steel "ridgepole" running the 
> length of the house, atop the actual conventional wooden ridgepole, 
> which supports the curved concrete tiles at the top of the roof. I 
> suspect that noise is coupling from it onto my TWP Ethernet line as 
> well. I used the simple/cheap MFJ clamp-on chokes at both the shack end 
> and the end in the den where it's plugged into the ISP's modem/router. 
> Basically, I'm doing the best I can with what I've got.
> 73,
> Brandy, N1HO (EL96xh)
>     On Wednesday, March 13, 2024 at 12:24:24 PM EDT, Victor Rosenthal 
> <k2vco.vic at gmail.com> wrote:
> 
>  I recommend replacing Ethernet cables with wifi when possible, both 
> for noise and rfi problems, as well as reducing the chance of lightning 
> damage.
> Victor 4X6GP 
> 
> 
> 
> 
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