Features : Frequency range 45.00 to 870.00MHz 12 C bus-mastering 5 digits LED Front panel control board to adjust frequency, modulation level, A/ V ratio, volume, RF signal level through the LED display by turning keys High C/ N, reliable and easy to operate Specification: 1. RF Frequency range : 45.00 to 870.00MHz Channels prepare : 58 standart channels, 44 subjoin channels Frequency stability : 5KHz Agile stepping : 250KHz Tune mode : Frequency synthesis phase-locked loop Input impedance : 75 © Input return loss : 14 dB Input level : 50 to 110dBµ V ( max) Noise figure : 6.0dB Image rejection ratio : e60dB AGC range : 60dB IF rejection : 60dB Adjacent channel rejection : 35dB 2. Video Standart output level : e1.0V p~ p Output impedance : 75 © Visual S/ N : 40dB ( min) Video response : 1.5dB Differential gain : 2.5% Differential phase : 2.5° Chrominance luminance delay : d100nS 3. Audio Output level : 350mV Output impedance : 1.0K© Frequency response : 1.5dB Aural S/ N : 40dB( min) Audio distortion : 0.5% De-emphasis : 50 µ S Sound frequency : 6.50MHz ( 6.00, 5.50, 4.50MHz appointed by user ) 4. General Power : 220V.AC Operation temperature : -10° C to + 40° C