[Fourlanders] IPX/U.FL Dummy Loads?

Paul Yeager pyeager56 at gmail.com
Sun May 31 01:40:43 EDT 2020


Brian:

Glad you discovered Ubiquiti.

I use their products for APs and point to point links all over the ski
area.  Great product! On a more complex installation, their management
software is a godsend!

73 de W4SKI


On Sat, May 30, 2020, 5:57 PM Brian McCarthy <brian at rfacres.com> wrote:

> Hi Ted,
>
> I would never get all that stuff to fit back into the case. I was typing
> the other response when you sent this.
>
> Your suggestions do lead me up a probable compromise, if simply unplugging
> the antennas is not enough attenuation. I could leave those internal
> antennas disconnected and put the gateway into it own Faraday cage. I would
> need to be pretty careful with the coax, ethernet and power connections to
> not allow any stray radiation. I would also need to ventilate it well
> enough to not kill it with heat. Those seem like easier problems to solve
> than fitting stubs and dummy loads into a tight case.
>
> Thanks!
> Brian
> NX9O
>
>
> On Sat, May 30, 2020 at 5:35 PM Ted Wood <ted at k4k.pw> wrote:
>
>> What about an IPX to SMA adapter cable like this:
>>
>> https://www.amazon.com/GP-Electric-Pigtail-Antenna-Coaxial/dp/B06Y6CB2SX
>>
>> in to an SMA dummy load like this:
>>
>>
>> https://www.amazon.com/DHT-Electronics-coaxial-connector-Termination/dp/B00BXUYDMM
>>
>> 73,
>> Ted
>>
>>
>> On Sat, 30 May 2020 09:15:01 -0400
>> Brian McCarthy <brian at rfacres.com> wrote:
>>
>> > Here's an odd question, has anyone here on the list ever seen a
>> > source for IPX/U.FL dummy loads?
>> >
>> > Here's my challenge...
>> >
>> > I am trying to completely mute the WiFi signals coming out of an
>> > Xfinity XB7 Gateway. Disabling the WiFi in the software does not mute
>> > all signals. Setting the gateway into bridge mode does not mute all
>> > the signals. This device is still pumping out 3 hidden SSID with 3
>> > unique MAC addresses on 2.4GHx channel 1. It is messing with the
>> > balance of my home Ubiquiti WiFi mesh network.
>> >
>> > I would be using a third party cable modem, but I can save $20/month
>> > by renting the Xfinity box. (The box rental is $20/month but comes
>> > with unlimited data. To subscribe to unlimited data is $40/month.)
>> >
>> > Looking up the FCC ID and reviewing the internal photos of this
>> > gateway, I see 6 wireless antennas. They are all connected with the
>> > tiny surface mount connectors typical inside modern WiFi devices.
>> > They look like:
>> >
>> > [image: image.png]
>> > [image: image.png]
>> >
>> > I will try just popping the connectors off surface mount sockets, but
>> > I an not sure that will give me enough attenuation of the
>> > transmitter. If I could clip some small (inexpensive) dummy loads
>> > onto those connectors, it should reduce leakage even more.
>> >
>> > I would appreciate suggestions and sources.
>> >
>> > Thanks!
>> > Brian
>> > NX9O
>> > involuntary network administrator at RF Acres.
>> _______________________________________________
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>> Sent to: rfacres at gmail.com
>>
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