Advice for Audio RF link

[Ironic]

Hi guys and hoppefully girls too :P

I am doing a robotics project where i need to have a video and audio(analog) signal in one direction and a audio signal (analog) in the other.

For the video and audio signal i plan to use a transmitter and receiver kit like the ones used in fpv (example).

But i am having trouble finding something adequate for the radio link.
Just to clarify matters this is for Europe and to be used indoors.
I would like something similar to the video kit but for audio only.
My requirements are that the transmitter and receiver be self contained units. I want to be able to change frequency in both receiver and emitter with a PIC microcontroller (this can be done if they use dip switches oh pushbuttons to change frequency, since a microcontroller could emulate that).
I want to have at least 5kHz response to be able to transmitt voice up to 3kHz and have a low bitrate AFSK signal at higher frequencies.

Only thing i could find so far is using FM frequencies. Due to low power and indoor use, interference outside should not occur, but still i would like to avoid it.

Getting a license and using Ham frequencies is a option, however all i have seen is handheld radios with too much buttons, or fixed but very large and too expensive units.

Any suggestions?

Tks

[5B4AJB]

How about an MP3 transmitter? the kind that plugs into a cigarette lighter socket & MP3 player then transmits the audio to the car radio, which receives the MP3 audio stream as a radio station.
They cost around 20 Euros and although they are not supposed to transmit very far, with a short length of wire will probably fulfill your needs well.

I have been through a few of them, they seem to have a problem with blowing the regulator if they are plugged in and you start the engine.
Usually they have 4 buttons, Stop, Play, Next and (transmitter) Frequency advance. There's also a line-in and a USB device socket.

Failing that, there are a number of "bugs" around as fairly simple kits. These usually transmit on the Band II (FM radio) frequencies, again costing around 20 Euros.

[Ironic]

Tks. Like i said in my post, fm is my backup solution.

however i would like to use frequencies where there are no commercial and widely used services because that is that best chance of not having problems.

[5B4AJB]

How about a radio microphone? used for musicians etc - they are not particularly powerful/long range but they have good bandwith (wide FM).

Used to listen on a scanner from the BBC carpark before they closed it all off to the public.

Read this for (UK) frequencies.