Pico Macom PCM55 SAW Channel 13 Rack-Mount RF Modulator 90-channel, 5.75-550MHz bandwidth Full 55dBmV output for optimum carrier-to-noise performance In-band carrier-to-noise ratio &gt;62dB ensures superior picture quality BTSC stereo Compatible pre-emphasis disable switch provides pass-through for stereo signals Digital phase-locked loop (PLL) design guarantees precise frequency locking