Glenn Booth wrote:
Hi All,

I need to lash-up something so that we can monitor the kids
while we are in the shed doing home-cinema things.

We have a standard baby alarm, but the range isn't up to
the job. We also have a set of walky-talky type things, which
work, but I can't find a way to have two units on 'vox' while
a third is on receive (two ankle-biters, hence two senders).

Sticking one of the radios in front of the baby monitor in the
house kinda sorta works, but it's a horrible cludge and I
don't trust it.

I've been racking my brains, and I can't think of a simple way
to do it. Anyone have any ideas?

If it helps, we have a spare cat 5e cable between house and shed
which I could use, provided I can think of what to put at each end!

The shed is about 30 metres from the house, and is metal clad, which
doesn't help.

Ta,

Glenn.

simple. 2 microphones and one audio amplifier at the house end, connect
amp output to cat5, and a speaker in the shed. Adding a variable R on
the speaker would allow some handy volume control at shed end. Adding a
vogad to the amp would improve its performance, this changes gain
depending on noise level.

Your baby mon contains amp and speaker, if you add an output socket to
it you can just plus the cat5 into it, then all you need is the
speaker. news:sci.electronics.basics would probably explain how.


NT