If you've got a UHF capable sig-generator around the lab somewhere, maybe try heterodyning the the Tx's output down into the scope's range? Just a thought. Ian Jilles Oldenbeuving wrote: > > .... i can't see > anything at the receiving end. I can't measure > if the transmitter is actually oscilating at 433 MHz becouse the fastest > scopes we have is a Philips 200 Mhz scope... > > > Jilles --