[CQ-Contest] Router Recommendation?

Timothy Coker n6win at yahoo.com
Thu Aug 23 15:03:20 EDT 2018

I've got Charter Cable and an Asus AC-1900 router. I've having a similar problem Scott. Anything over X power and on Y frequency on 160m causes the modem to stall. I had Charter send out a new tech who I had a nice conversation with about what was happening. He installed new cable with me from my box as he was able to justify their expense considering his tested signal strengths. 

That helped...
I replaced all network cables in my house with Cat 7 which helped some too.
Installing type 31 beads on the network cables and RG6 helped some. I only had one type 31 toroid on hand (ordering more for many other uses too) and that went on the modem's power cable with tons of turns.
What I've found is the following:
With my tower only 40' from my router/modem and the 160m inverted-L horizontal run passing directly overhead some 20' above... I can run nearly legal limit at 1.825 mhz without issue, but I can only run X hundreds of watts on as the frequency goes up (starting around 1.835) before the modem stalls.
I need to call again to get a new modem as they asked I try out their new cable install for a while.
I'll also order more type 31 toroids and longer Cat7 cables to make numerous turns as per Jim's cookbook after that if I still am having similar problems.

Tim / N6WIN

    On Thursday, August 23, 2018, 11:53:51 AM PDT, Jim Brown <k9yc at audiosystemsgroup.com> wrote:  
 Hi Scott,

What kind of internet connection? DSL modems are notoriously poor at 
rejecting RF, and 160M is within the range of their data signal. Part of 
the problem is telco wiring around your home -- replacing it with high 
quality twisted pair data cable like CAT5/6 can help. But when their 
modem is the problem, the best solution is to call your provider and 
tell them to fix it. W8JI did that years ago.

Have you considered WiFi for networking? That significantly reduces RF 
related issues, including internet birdies on the ham bands. I started 
replacing wired Ethernet with WiFi when I lived in Chicago, and am doing 
the same here in NorCal.

As to ferrites -- it takes a LOT of turns through one or more #31 cores 
to make an effective choke for 160M. If you haven't already done so, 
study k9yc.com/RFI-Ham.pdf

73, Jim K9YC

On 8/23/2018 7:50 AM, K9MA wrote:
> Despite a ton of ferrite cores on all the cables, my router fails every 
> time I transmit on 160. I'll admit that RF levels are high, as my 
> shunt-fed tower is only about 20 meters away from the router, and some 
> of the ethernet cables come within about 10 meters of the tower. Has 
> anyone found a router that doesn't have this problem?
> 73,
> Scott K9MA

CQ-Contest mailing list
CQ-Contest at contesting.com

More information about the CQ-Contest mailing list