Transceiver comprising a low power RF radio broadcast transmitter having
means to modulate a transmitter carrier frequency with a baseband
modulation signal as well as transmitter tuning means to vary said
transmitter carrier frequency within an RF radio broadcast band. To
secure that operation of said transmitter means will not cause
interference to broadcast reception, said transceiver includes an RF
radio broadcast receiver having a search tuning circuit being provided
with channel selecting means for, in a receiving mode of the transceiver,
detecting a free RF radio broadcast channel within said RF radio
broadcast band carrying no RF signal exceeding a predetermined threshold
level, said channel selecting means supplying tuning data defining said
free RF radio broadcast channel to means for transmitting said tuning
data to said transmitter tuning means for tuning said transmitter carrier
frequency to said free RF radio broadcast channel in a transmitting mode
of the transceiver.