433Mhz Tx help please

[harry00000001]

Hi guys, first time posting so please be gentle , I have a metal detector that transmitts its signals to cordless headphones using a choice of 2 channels, ch1 is 433.575Mhz and ch2 is 434.075Mhz, what i want to do is make a "probe", basically its a hand held metal detector that helps with pinpointing a target in the hole however i want it to transmit the signal on either ch1 or ch2 so the headphones pick it up, i've seen these tx transmitters you can get that can be programmed to work on 433.575Mhz and 434.075Mhz, the question is how would i get it to transmit audio distance only has to be 10 feet or so, when i read about them all i see is talk about data rate etc and no mention of audio, any help would be much appreciated.

Cheers Harry

 

[Boncuk]

Try

Welcome Hope Microelectronics - RF Components,IC,Modules|Digital Sensor|Application Solution(update time2008-5-20)

They offer small transceivers working in the ISM bands of 315, 433, 868 and 915MHz.

The device name is RF12.

Boncuk

 

[RadioRon]

Hi guys, first time posting so please be gentle , I have a metal detector that transmitts its signals to cordless headphones using a choice of 2 channels, ch1 is 433.575Mhz and ch2 is 434.075Mhz, what i want to do is make a "probe", basically its a hand held metal detector that helps with pinpointing a target in the hole however i want it to transmit the signal on either ch1 or ch2 so the headphones pick it up, i've seen these tx transmitters you can get that can be programmed to work on 433.575Mhz and 434.075Mhz, the question is how would i get it to transmit audio distance only has to be 10 feet or so, when i read about them all i see is talk about data rate etc and no mention of audio, any help would be much appreciated.

Cheers Harry

The signal may be modulating the carrier as analog FM, as this would be the simplest approach. In that case, try googling for "analog FM transmitter 433MHz". Here's one link that I got:
**broken link removed**

 

[harry00000001]

Many thanks for all the help folks i'll have a look at them links now.

Very much appreciated