The Lectrosonics SRb Camera Slot UHF Receiver (Block 470) is a two-channel slot-mount Digital Hybrid Wireless diversity receiver that supports 470.100 - 495.600 MHz operating frequencies. The SRb receiver offers two independent channels and fits into the standard video camera slots found on professional cameras. The two audio channels can feed separate inputs or can be mixed internally to feed a single input. Plus, a DSP compatibility mode allows the SRb to be used with Lectrosonics IFB transmitters.
The device's RF performance is extremely stable over a very wide temperature range, making the receiver well suited for the rough environmental conditions found in field production. The front panel features a menu-driven LCD interface and four membrane switches which are used to view and alter settings. The main LCD window displays the pilot tone indicator, diversity activity, RF level, audio level and transmitter battery status for both receivers.
Other features include SmartSquelch for noiseless muting and a built-in spectrum analyzer that scans across the tuning range of the receiver to locate RF signals in the vicinity and find clear operating frequencies. The two internal receivers can be operated separately, each using switching, antenna combining diversity, or in tandem with ratio diversity reception. Clear frequencies are easily found with the built-in RF spectrum scanner and graphical LCD. The audio outputs of the receivers can be mixed internally, or left separated for discrete recording tracks or external mixing.