Topic 'blocking 900mhz waves from baby monitor' in forum 'Wireless Service Providers' - dslreports.com http://www.dslreports.com/forum/blocking-900mhz-waves-from-baby-monitor-23280377 en Sat, 11 Feb 2012 06:14:17 EDT Sat, 11 Feb 2012 06:14:17 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23764037 2. Upgrade your phones to 5.8GHz or DECT 6.0 (1.9GHz).

Problem solved.]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23764037 Sat, 06 Feb 2010 10:56:18 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23744770
I went to a house today that was practically due north from my tower, about 10 miles away. I have a customer just down the road from this house, they have an geat signal, even using a stock Maxrad antenna. 900mhz).

I do have a competitor who also uses canopy, but he is north from this potential customer.

When I did my site survey, I kept picking up his AP, even though I was facing 180 degrees from him!

The only thing I can figure out, after reading the above post, is his signal is reflecting off several metal grain bins and a metal building that is south of their house...(I guess)....]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23744770 Tue, 02 Feb 2010 19:39:02 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23743829 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23743829 Tue, 02 Feb 2010 16:36:07 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23741769 said by TomS_:

said by 11769403:

but havn't seen a baby monitor jammer.
I Its probably transmitting analogue signals, so at worst you'd just get a bit of interference on it.Every possible RF signal can be "nulled" out by quickly re-transmitting a phase and amplitude adjusted version of itself. Military engineers do it all the time as it is much better than trying to "drown" out a whole band using high power white noise. :)]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23741769 Tue, 02 Feb 2010 11:00:34 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23740669 said by 11769403:

but havn't seen a baby monitor jammer.I wouldnt think you'd be able to jam a baby monitor. Its probably transmitting analogue signals, so at worst you'd just get a bit of interference on it.]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23740669 Tue, 02 Feb 2010 06:11:59 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23330834
Yay for you. Put the smack down!]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23330834 Thu, 12 Nov 2009 12:04:00 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23329844
Persistance pays off. Thanks for all the advice.

Grow babies, grow. ]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23329844 Thu, 12 Nov 2009 09:00:11 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23326575
Seriously: 900 MHz is very, very easily messed up by consumer gear, especially since the Part 15 rules don't let you increase the EIRP when you use a higher gain antenna. Try another band.]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23326575 Wed, 11 Nov 2009 15:44:52 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23303848 said by jakkwb:

So....is there a way to block or absorb the signal from the sides of the monitor where it is not needed to broadcast? Really, it just needs to have about 20 feet of signal strength, instead of 75+ yards right now.You need to borrow a small block of RF absorber material (that is good down to 900Mhz band ) from a nearby college RF lab. You can also buy if you would do this often - but prepare for sticker shock. ;)

You just drill a hole for the dipole antenna, slip it on and gradually shave off enough material from the desired direction to make the indoor link. The datasheet will tell you dB loss per unit thickness at 900Mhz. :)
]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23303848 Fri, 06 Nov 2009 19:12:11 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23302008 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23302008 Fri, 06 Nov 2009 13:03:24 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23301950 said by Killa200:

note i said "to fix this issue permanently" as well, ;)
The problem will be permanently fixed when Baby grows up...!

:D
--
The man who speaks to you of sacrifice is speaking of slaves and masters, and intends to be the master.
]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23301950 Fri, 06 Nov 2009 12:56:03 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23301884 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23301884 Fri, 06 Nov 2009 12:46:53 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23301662 said by Killa200:

...over a slapped up foil shield...
I was thinking that the aluminum foil could be used to block the signal. After finding out what works, do something that works. Block it with the refrigerator, for example. Could lay it on the floor. Could...??

The objective is...to block or absorb the signal to reduce its effective range.

BTW, aluminum foil makes great wallpaper. I used it to cover the walls of my radio room prior to sheetrocking (1/2 plywood, Al foil, sheetrock). I used Noalox (in the one gallon industrial size) with a paint roller to stick it to the plywood, half-lapped the foil on top of that...top and sides. Didn't do the floor, can't be blocking the gravity waves, you know!

I got the idea when building TEMPEST rooms for various projects. Bonded to a single-point ground grid...worked great! Nothing in or out unless I let it.

But I digress...
--
The man who speaks to you of sacrifice is speaking of slaves and masters, and intends to be the master.
]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23301662 Fri, 06 Nov 2009 12:02:05 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23298660 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23298660 Thu, 05 Nov 2009 20:17:24 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23289156 said by nevtxjustin:

said by Killa200:

Do things to do them right...
Fiber optic extension for baby monitor and media converters might be a tad expensive. 50 ft mast for CPE?
LOL! i was more pointing towards replacement of the monitors over a slapped up foil shield, But hey, i'll get on patenting up some fiber fed baby monitors, ;)]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23289156 Wed, 04 Nov 2009 09:28:01 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23287486 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23287486 Tue, 03 Nov 2009 21:49:18 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23287327 said by nevtxjustin:

said by John Galt:

Aluminum foil...
I was thinking more of Velcro and a Mongolian ball gag instead of aluminum foil.
LOL

Use the aluminum foil as a shield for the transmitter portion of the baby monitor, installed between the monitor and the CPE.
--
The man who speaks to you of sacrifice is speaking of slaves and masters, and intends to be the master.
]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23287327 Tue, 03 Nov 2009 21:20:26 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23287062
the antenna guys might know if you could build a cantenna type shield around a yagi. If it met rf specs then its not neccessarily a cobbled solution.]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23287062 Tue, 03 Nov 2009 20:33:39 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23286500 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23286500 Tue, 03 Nov 2009 18:46:41 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23286438 said by Killa200:

Do things to do them right...
Fiber optic extension for baby monitor and media converters might be a tad expensive. 50 ft mast for CPE?]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23286438 Tue, 03 Nov 2009 18:38:12 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23285826
Do things to do them right...]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23285826 Tue, 03 Nov 2009 16:48:49 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23285366 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23285366 Tue, 03 Nov 2009 15:37:31 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23283344 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23283344 Tue, 03 Nov 2009 09:11:29 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23282706 said by nevtxjustin:

....I was thinking more of Velcro and a Mongolian ball gag instead of aluminum foil.
That is the answer. No need to monitor the baby if it is gagged.]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23282706 Tue, 03 Nov 2009 02:07:11 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23282686 said by John Galt:

Aluminum foil...
I was thinking more of Velcro and a Mongolian ball gag instead of aluminum foil.]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23282686 Tue, 03 Nov 2009 01:52:33 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23282591
If i have problems with a nearby 2.4ghz cordless phone, I just put on a higher gain dish antenna and lower the transmit power of the cpe radio. Dont know how this might work with FCC rules in the US tho. ]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23282591 Tue, 03 Nov 2009 00:57:43 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23281839 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23281839 Mon, 02 Nov 2009 21:52:04 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23281296 said by Nitroxide:

Tell them to get rid of the baby.
*&$% pesky babies

Try an indoor unit if youre close enough to the AP]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23281296 Mon, 02 Nov 2009 20:02:22 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280998 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280998 Mon, 02 Nov 2009 19:10:32 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280871 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280871 Mon, 02 Nov 2009 18:46:12 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280858 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280858 Mon, 02 Nov 2009 18:42:46 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280641 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280641 Mon, 02 Nov 2009 17:52:20 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280634 said by cdiggity:

buy them a 2.4ghz baby monitor
+1]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280634 Mon, 02 Nov 2009 17:51:31 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280632
I can think of 2 possible solutions.

1.
If you have the ability to move the SM around, maybe you can find where the baby's room is and where the monitor typically is kept. Then try to place the SM the farthest possible place from it.... That is a long shot but it may work. Maybe those monitors aren't too powerful.

2.
What about using an SM at a neighbors house and setting up a quick PtP with an NS2 or NS5 to that location? Just share the signal off that one SM for the two houses.

-Jeff]]> http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280632 Mon, 02 Nov 2009 17:51:25 EDT Re: blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280544 http://www.dslreports.com/forum/Re-blocking-900mhz-waves-from-baby-monitor-23280544 Mon, 02 Nov 2009 17:35:06 EDT blocking 900mhz waves from baby monitor http://www.dslreports.com/forum/blocking-900mhz-waves-from-baby-monitor-23280377
I have a customer on our Canopy 900 system. Their daughter lives next door (about 75 yards away) and has a dual channel 900mhz baby monitor. Needless to say, the monitor is wreaking havok on their internet connection with our service (its off more than its on).

I plainly told them that their monitor is causing the problem. The mom says "oh, she simply has to use the monitors". End of story.

I wouldn't be trying so hard with this had she not been a former customer of my competition - they are using 2.4 gear. She had heard how good our service was, so she decided to switch to us.

So....is there a way to block or absorb the signal from the sides of the monitor where it is not needed to broadcast? Really, it just needs to have about 20 feet of signal strength, instead of 75+ yards right now.

Thank you,

Jakkwb]]> http://www.dslreports.com/forum/blocking-900mhz-waves-from-baby-monitor-23280377 Mon, 02 Nov 2009 17:06:06 EDT