Fixed Channel Modulator: Features 1. High frequency. 2. Be processed with 2 saw filters. 3. PLL technique is applied to audio and RF local oscillatorï¼�high frequency stability and high accuracy. 4. MMIC circuits are on key parts and SWT technique is applied to the overall unit. 5. Digital display channel. 6. Output adopts screw filters. 7. 2U Standard housing. 8. With high security and high temperature stability. 9. Output level adjustment and A/V adjustment are designed ahead. 10. We can make different channels according to the customer requests. Specifications output frequency range 45-870MHz any frequency frequency accuracy � 5KHz output level 105dB V out of band suppression 60dB side-band suppression 65dB output impedance 75 Î video to audio carrier ratio -10dB ~ -20dB lever 0.6 ~ 1.5Vp-p impedance 75 Ω reflection 30dB min K coefficient 4 % max ï¼� 2T pulse ï¼� video s/n 50dB C/L delay 45nsec frequency response � 1dB differential gain � 4 % ï¼ modulation 87.5 ï¼ differential phase � 4 � ï¼ modulation 87.5 ï¼ level -10 ~ 10 dBm impedance 10KΩ min frequency response � 1dB distortion 0.5 % signal to noise radio -60dB audio picture interval according to the style voltage DC12V/260mA