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multiple transmitters for one wireless headset

Hello,

I have a Sennheiser HDR140 headset and got 3 transmitter bases that
work with the headset. each base have 3 channels for three different
frequencies. what i am trying to do is power up all three
transmitters, each at one channel transmitting an audio source (so 3
audio sources, 3 channels). also I put all the transmitters in one
box. My problem is when I do that, two channels sound good while the
third one is very static and basically a combination of the other two
channels. here are the three channels' frequencies: Ch1 = 926.1-MHz,
Ch2 = 926.8-MHz, Ch3 = 927.5-MHz.

http://www.sennheiser.com/sennheiser/icm_eng.nsf/root/09926?Open&print=

thanks in advance!
 
J

jasen

Hello,

I have a Sennheiser HDR140 headset and got 3 transmitter bases that
work with the headset. each base have 3 channels for three different
frequencies. what i am trying to do is power up all three
transmitters, each at one channel transmitting an audio source (so 3
audio sources, 3 channels). also I put all the transmitters in one
box. My problem is when I do that, two channels sound good while the
third one is very static and basically a combination of the other two
channels. here are the three channels' frequencies: Ch1 = 926.1-MHz,
Ch2 = 926.8-MHz, Ch3 = 927.5-MHz.

you've got cross-modulation. , you could try filtering or attenuationg the
transmitter outputs, but it's probably easier to space them out.


Bye.
Jasen
 
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