The PTR50 from Peak Communications is a Satellite Beacon Receiver with an L-band input frequency range of 925-2150 MHz. This beacon-tracking receiver has an input return loss of 15 dB and a Beacon input level of -70 dBm. It has a post-detection time constant of 150 ms and a step size of 1 kHz. The beacon receiver has a PLL noise (IF) bandwidth of 300 Hz and a threshold lock reacquisition of 35 dBHz (for sweep rates less than 10kHz/s). It features a graphic display module that can display a digital representation of the received beacon spectrum and a search facility that sweeps the frequency to locate the signal and lock the frequency to the beacon. The receiver has an internal reference of 10 MHz and an adjustment range of +/- 0.45 ppm. It requires a voltage supply of 90-264 VAC and a power supply of 50 W. The beacon receiver weighs 8 Kg and measures 19 x 1.75 x 21 inches (width x height x depth). It is designed to track and measure CW beacons from commercial satellites and for telemetry and control, typically in earth stations using large antennae.