2 meter interference from WiFi hub
Hi all,
I finally figured out why I could not receive AO-91. It turns out that my old Apple Time Capsule (a wifi hub with a disk built in) was pumping out a nice strong carrier on 145.965 totally overwhelming the satellite. I have another newer Time Capsule that was fine.
So the question is: I want to replace this with another WiFi hub. Does anyone have good or bad recommendations for a hub that does not generate a lot of RF? (When you google Wi-Fi and RF interference, you mainly get other things that interfere with Wi-Fi :-))
Thanks and 73,
Burns WB1FJ
On 10/20/2018 18:57, Burns Fisher wrote:
So the question is: I want to replace this with another WiFi hub. Does anyone have good or bad recommendations for a hub that does not generate a lot of RF? (When you google Wi-Fi and RF interference, you mainly get other things that interfere with Wi-Fi :-))
I have an older router that caused me some problems, but it's not made any longer so you don't have to worry about not buying one. I solved that problem by moving it out of the attic, to a downstairs bedroom farther away.
But just FYI for possible future problems, I do still pick up interference from a neighbor that gets in the way of AO-73 and AO-92 at the lower end of their passband/Doppler shift. So it may not always be your own!
Jerry Buxton, NØJY
Thanks, Jerry. This one is clearly mine. I unplug it...the frequency comes back. I thought it might be beating two different channels, and I guess that's possible but the WiFi channels are 5MHz apart, although they do overlap. For now, I'll just turn it off when trying to use AO-91 :-)
On Sun, Oct 21, 2018 at 12:57 AM Jerry Buxton n0jy@amsat.org wrote:
On 10/20/2018 18:57, Burns Fisher wrote:
So the question is: I want to replace this with another WiFi hub. Does anyone have good or bad recommendations for a hub that does not generate
a
lot of RF? (When you google Wi-Fi and RF interference, you mainly get
other
things that interfere with Wi-Fi :-))
I have an older router that caused me some problems, but it's not made any longer so you don't have to worry about not buying one. I solved that problem by moving it out of the attic, to a downstairs bedroom farther away.
But just FYI for possible future problems, I do still pick up interference from a neighbor that gets in the way of AO-73 and AO-92 at the lower end of their passband/Doppler shift. So it may not always be your own!
Jerry Buxton, NØJY
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Turns out it was NOT the hub. It was the camera I had plugged into it with CAT5. The camera is looking at my antennas so I can see where they are rotating, but the wire runs a ways. Probably radiates nicely, and conveniently right in the 2 meter band. More fooling around required...
On Sun, Oct 21, 2018 at 9:08 AM Burns Fisher burns@fisher.cc wrote:
Thanks, Jerry. This one is clearly mine. I unplug it...the frequency comes back. I thought it might be beating two different channels, and I guess that's possible but the WiFi channels are 5MHz apart, although they do overlap. For now, I'll just turn it off when trying to use AO-91 :-)
On Sun, Oct 21, 2018 at 12:57 AM Jerry Buxton n0jy@amsat.org wrote:
On 10/20/2018 18:57, Burns Fisher wrote:
So the question is: I want to replace this with another WiFi hub. Does anyone have good or bad recommendations for a hub that does not
generate a
lot of RF? (When you google Wi-Fi and RF interference, you mainly get
other
things that interfere with Wi-Fi :-))
I have an older router that caused me some problems, but it's not made any longer so you don't have to worry about not buying one. I solved that problem by moving it out of the attic, to a downstairs bedroom farther away.
But just FYI for possible future problems, I do still pick up interference from a neighbor that gets in the way of AO-73 and AO-92 at the lower end of their passband/Doppler shift. So it may not always be your own!
Jerry Buxton, NØJY
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Try putting ferrite beads on all of your cables into and out of the routers, modems, etc.
73,
Paul, N8HM On Sun, Oct 21, 2018 at 11:12 AM Burns Fisher burns@fisher.cc wrote:
Turns out it was NOT the hub. It was the camera I had plugged into it with CAT5. The camera is looking at my antennas so I can see where they are rotating, but the wire runs a ways. Probably radiates nicely, and conveniently right in the 2 meter band. More fooling around required...
On Sun, Oct 21, 2018 at 9:08 AM Burns Fisher burns@fisher.cc wrote:
Thanks, Jerry. This one is clearly mine. I unplug it...the frequency comes back. I thought it might be beating two different channels, and I guess that's possible but the WiFi channels are 5MHz apart, although they do overlap. For now, I'll just turn it off when trying to use AO-91 :-)
On Sun, Oct 21, 2018 at 12:57 AM Jerry Buxton n0jy@amsat.org wrote:
On 10/20/2018 18:57, Burns Fisher wrote:
So the question is: I want to replace this with another WiFi hub. Does anyone have good or bad recommendations for a hub that does not
generate a
lot of RF? (When you google Wi-Fi and RF interference, you mainly get
other
things that interfere with Wi-Fi :-))
I have an older router that caused me some problems, but it's not made any longer so you don't have to worry about not buying one. I solved that problem by moving it out of the attic, to a downstairs bedroom farther away.
But just FYI for possible future problems, I do still pick up interference from a neighbor that gets in the way of AO-73 and AO-92 at the lower end of their passband/Doppler shift. So it may not always be your own!
Jerry Buxton, NØJY
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Agree,
I have 2 Wi-Fi transmitting all the time in the shack, Zero-issue on alls the Ham bands (except 2.4 Ghz).
1) As Paul said, ferrites everywhere. On all computer, speakers, mic, DC, AC and data cables. Basically any cable in or out of any box/interface should have one each side. Have over 100 installed. 2) Bonding the +++, all equipment or metal part in the shack should be bonded to the main ground-bar with the thicker wire practically possible. The ground bar should be connected to the antenna and to the ground system with the largest possible cable (I use 35 m2 cable to the antennas and 50 m2 from the main ground bar to earth). More this protects your equipment in case of lightning strike, sure use only one ground/bonding system (I disconnected the mains one) and hopefully will install an isolating transformer soon.
Doing so, the noise level in the shack is drastically reduce and interference from the household or neighbors also.
Hope this help.
Jean Marc (3B8DU)
On Oct 21, 2018, at 7:47 PM, Paul Stoetzer n8hm@arrl.net wrote:
Try putting ferrite beads on all of your cables into and out of the routers, modems, etc.
73,
Paul, N8HM On Sun, Oct 21, 2018 at 11:12 AM Burns Fisher burns@fisher.cc wrote:
Turns out it was NOT the hub. It was the camera I had plugged into it with CAT5. The camera is looking at my antennas so I can see where they are rotating, but the wire runs a ways. Probably radiates nicely, and conveniently right in the 2 meter band. More fooling around required...
On Sun, Oct 21, 2018 at 9:08 AM Burns Fisher burns@fisher.cc wrote:
Thanks, Jerry. This one is clearly mine. I unplug it...the frequency comes back. I thought it might be beating two different channels, and I guess that's possible but the WiFi channels are 5MHz apart, although they do overlap. For now, I'll just turn it off when trying to use AO-91 :-)
On Sun, Oct 21, 2018 at 12:57 AM Jerry Buxton n0jy@amsat.org wrote:
On 10/20/2018 18:57, Burns Fisher wrote:
So the question is: I want to replace this with another WiFi hub. Does anyone have good or bad recommendations for a hub that does not
generate a
lot of RF? (When you google Wi-Fi and RF interference, you mainly get
other
things that interfere with Wi-Fi :-))
I have an older router that caused me some problems, but it's not made any longer so you don't have to worry about not buying one. I solved that problem by moving it out of the attic, to a downstairs bedroom farther away.
But just FYI for possible future problems, I do still pick up interference from a neighbor that gets in the way of AO-73 and AO-92 at the lower end of their passband/Doppler shift. So it may not always be your own!
Jerry Buxton, NØJY
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
I've had excellent luck with the Ubiquiti UniFi units, but they are not trivial to set up.
Another one that seems to have great coverage and not 'spray' other frequencies is the Eero wireless solution. The Eero sets up quite easily with an iOS or Android app.
Both of these are industrial grade and fairly expensive, however.
HTH!
73 de KK6ZHZ,
- Eli Caul
Director of Customer Care Sonic 707-237-6201 Direct 707-521-0131 Faxline
-----Original Message----- From: AMSAT-BB amsat-bb-bounces@amsat.org On Behalf Of Burns Fisher Sent: Saturday, October 20, 2018 16:57 To: AMSAT BB amsat-bb@amsat.org Subject: [amsat-bb] 2 meter interference from WiFi hub
Hi all,
I finally figured out why I could not receive AO-91. It turns out that my old Apple Time Capsule (a wifi hub with a disk built in) was pumping out a nice strong carrier on 145.965 totally overwhelming the satellite. I have another newer Time Capsule that was fine.
So the question is: I want to replace this with another WiFi hub. Does anyone have good or bad recommendations for a hub that does not generate a lot of RF? (When you google Wi-Fi and RF interference, you mainly get other things that interfere with Wi-Fi :-))
Thanks and 73,
Burns WB1FJ _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Thanks everyone. I'm going to try ferrite chokes first and see what happens. I'll let you know how it goes.
On Tue, Oct 23, 2018 at 9:34 AM Eli Caul eli.caul@sonic.com wrote:
I've had excellent luck with the Ubiquiti UniFi units, but they are not trivial to set up.
Another one that seems to have great coverage and not 'spray' other frequencies is the Eero wireless solution. The Eero sets up quite easily with an iOS or Android app.
Both of these are industrial grade and fairly expensive, however.
HTH!
73 de KK6ZHZ,
- Eli Caul
Director of Customer Care Sonic 707-237-6201 Direct 707-521-0131 Faxline
-----Original Message----- From: AMSAT-BB amsat-bb-bounces@amsat.org On Behalf Of Burns Fisher Sent: Saturday, October 20, 2018 16:57 To: AMSAT BB amsat-bb@amsat.org Subject: [amsat-bb] 2 meter interference from WiFi hub
Hi all,
I finally figured out why I could not receive AO-91. It turns out that my old Apple Time Capsule (a wifi hub with a disk built in) was pumping out a nice strong carrier on 145.965 totally overwhelming the satellite. I have another newer Time Capsule that was fine.
So the question is: I want to replace this with another WiFi hub. Does anyone have good or bad recommendations for a hub that does not generate a lot of RF? (When you google Wi-Fi and RF interference, you mainly get other things that interfere with Wi-Fi :-))
Thanks and 73,
Burns WB1FJ _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (5)
-
Burns Fisher -
Eli Caul -
Jean Marc Momple -
Jerry Buxton -
Paul Stoetzer