Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[flextone]

My Video sender (lola MK11A A/V kit) and receiver connected between my TIVO to my TV works perfect except for the video and audio blips that run as 2 large  horizontal lines that move from the top to the bottom of my TV screens. I tried moving the receiver's antennae, tried moving to other rooms and still get the problem. If I move the transmitter and receiver closer than 2 inches from each other, the blips disappear, but any futher away and the blips re-appear!

I believe the problem to be from either my 2.4 wireless telephones, or my cell phones, or my wireless 802.b computer network that also transmitts on the 2.4g frequency range.

Is there any cure short of replacing my other 2.4 devices?

Thanks,
Flextone

[Brian H]

Both 2.4Ghz cordless phones and wireless networks can cause interference on the X10 wireless cameras and video senders. Try turning one of the items off and see if it is the one causing problems. Sometimes the wireless networks can be shifted to another frequency to help with interference. I believe the X10 stuff has 4 channels. A-D if you have not tried it yet maybe a different one maybe a better choice on the X10 devices.

[STM]

Don't bother playing with the X10 channels.  The channel settings are for the input signal controlling the camera, not for the output video transmission.  I've tried changing my 802.11b channel hoping that one of the end channels would shift it out of the spectrum the X10 camera uses, but that didn't work either.  The X10 camera transmission is too broad.  You may be able to set up an X10 outlet to turn your wireless network on and off if you want to work with either the network or the cameras at any particular time.  I doubt you would want to do that with your phone, but if you have other extentions you may find it acceptable to turn it off as well.

[Brian H]

NO the A-D switch does change the 2.4 Ghz frequency the cameras and sender use. I can find them if you need them.

[STM]

I stand corrected.  I completely forgot about the channel switch and was thinking of the house switch.      Once I had my head on straight, I did a little more digging.

The channel settings for the MK11A Lola (VT42A transmitter) are:

Channel	Nominal (MHz)
A	2411
B	2434
C	2454
D	2471

I didn't see any numbers given for how broad the signal is, but they appear to be fairly narrow based on their scans submitted to the FCC.

The channels for 802.11b wireless networks are:

Channel	Nominal (MHz)	Minimum (MHz)	Maximum (MHz)
1	2412	2401	2423
2	2417	2405	2428
3	2422	2411	2433
4	2427	2416	2438
5	2432	2421	2443
6	2437	2426	2448
7	2442	2431	2453
8	2447	2436	2458
9	2452	2441	2463
10	2457	2446	2468
11	2462	2451	2473

So, select X10 channels and 802.11b channels that don't overlap.  Any other 2.4 GHz equipment will most likely have a frequency that can't be changed.  Both the X10 and wireless network would have to be worked around that equipment.

To find the frequencies used by other equipment, find the FCC ID listed on their label.  Use that ID to look up the emission information on the FCC website at http://www.fcc.gov/oet/fccid.

[jegerd]

Hi
So if I understand correctly...
If have my home wireless Router set on Channel 11 (2462 to 2473 MHz), I should be able to use the transmitter on Channel A (2411 MHz) without getting interference..
Is that a correct assumptions..

I am thinking of getting the Video Sender kit (I think it uses the same frequecies as the VT42A Transmitter)

Thanks