What you're looking for is an fm loop system.  That will keep 900 meg stuff out
of the system.  However, if you must have a 900 meg system you should be able to
put one together for a couple hunred dollars from Radio Shack.

There are a lot of reasons for it but I generally recommend loop systems to
clients because they can be used with existing hearing aids hence take the type
of hearing loss in to account which does not happen with off-the-shelf items in
nearly all cases.

Tom


Tom Brennan  KD5VIJ, CCC-A/SLP
web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html

On Thu, 24 Jan 2013, Howard Kaufman wrote:

> Date: Thu, 24 Jan 2013 18:44:55 -0600
> From: Howard Kaufman <[log in to unmask]>
> Reply-To: For blind ham radio operators <[log in to unmask]>
> To: [log in to unmask]
> Subject: off topic help needed
>
> I am trying to find a device for my uncle, to help him function with his
> hearing loss.
> We found that a wireless headset enabled him to hear and understand what is
> on TV.  Why he wants to know what they are saying, I have no idea!
>
> He asked if their was a similar device with a clip on microphone that could
> be used to help him hear what is going on in a lecture or in temple.  So
> basically we are looking for a 900 MHz transmitter with both line and mike
> inputs.  I have tried a number of searches, but keep coming up with the
> wrong stuff.
> We are not trying to break the bank on this one either.  He has hearing aids
> and can use them or not depending on what works.
> The wireless headset is easy, but they keep wanting to put the mike on the
> headset, and we need it at the other end of the room.
> Thanks in advance.  It would be good, if the transmitter didn't
> automatically turn off, unless the headset was digital, because their are
> prayers of silent devotion, and we don't want to fill his ears with white
> noise.
>
> H T Kaufman MSW LCSW
> Adaptive Technology Instructor
>