The Technisonic TSR-4100 receiver is a single channel remote mount, fully synthesized, 19 inch rack mount, VHF/AM stand alone component which operates over the frequency range of 117.975 MHz to 138.000 MHz, with 25 KHz channel spacing. This highly sensitive and selective receiver offers identical performance (receive only) to TSC-series of transceivers, are intended for use in applications where remote transmitter and receiver sites are not co-located. For applications where interference from nearby transmitters is extreme, Technisonic offers as an option, a 20 dB or 40 dB crystal filer, which brings adjacent channel rejection to better that 100 dB.