Microprocessor-controlled double-sideband modulator. Output channel selection is made using two buttons (visible after opening the cover), and its number, like each editable parameter described below, is displayed on the LED display. The channel number and other parameter values ​​are saved in non-volatile memory. The use of a quartz stabilization circuit (PLL) ensures near-zero frequency error. These modulators can be cascaded. They also allow for summing the modulated signal with the terrestrial television signal. The modulator can be secured against unauthorized access. It should be noted that, compared to previous modulator series, Terra has implemented more PAL system variants. & xa0. Inputs: 1 pc. Composite video (Cinch), 1 pc. RF (F), 2 pcs. Audio (Cinch) Output: 1 pc. RF (F) Video input frequency range: 20 Hz - 6 MHz Input level / impedance Video: 1 V 1 dB / 75 Audio Input Frequency Range: 20 Hz.. 15 kHz Audio Input Level Control: 1& xa0.. -14 dB Audio Input Level / Impedance / Deviation: 775 mV RMS / 10 k / 50 kHz RF Output Level (typical) / Impedance: 85 dB V / 75 RF Output Level Control: 0& xa0.. -20 dB PAL RF Output Signal Version: B/G/D/K/H/I/L/M/N/Australia RF Output Frequency (Channel) Range: 170 MHz.. 230 MHz. 470 MHz.. 862 MHz (K6-12, K21-69). Carrier Accuracy: 50 kHz Audio Subcarrier Frequency: 4.5 ; 5.5 ; 6.0 ; 6.5 MHz Video carrier adjustment range: 2.25 MHz max. in 0.25 MHz steps SAT / Terr pass loss: 2.5 dB / 1.5 dB SAT / Terr pass frequency range: 47 MHz.. 2150 MHz Video frequency response: 1 dB A/V ratio: 12 / 16 dB Amplitude modulation depth (typical): 81 % SNR (weighted): 55 dB Power supply: 230 V AC 50Hz Power consumption: 2.5 W Operating temperature: -10 °C.. 50 °C Selected functions. adjusting the video carrier frequency; changing the audio subcarrier modulation depth; changing the audio subcarrier from the video carrier spacing; adjusting the input level and audio signal deviation; Weight: 0.336 kg Dimensions: 133 x 73 x 39 mm Warranty: 2 years.