If the photograph is clicked, it grows.

HP 58503A GPS Time and Frequency Reference Reciever SOLD OUT　sold	fre116

6ch Paralle tracking C/A code L1code HP smart clock Frequency:10MHz,Amplitude:1Vrms, Time Base Stability:1.5E-10/yr,<1E-12/day Holdover(unlock) <1E-10/day Maximum Single-Side-Band Noise:-85dBc/1Hz,<-140dBc/1KHz Impedance:50ohm Jitter:<50ps rms 1pps Time Accuracy:<110ns(UTC(USNO MC) TimeError(unlock):<8.6us(3days after) 2.4V(50ohms) Ports to Peripheral Devices:RS232C LED:Power,GPS-lock,HoldOver,Alarm Input Power:AC100-240 (Universal),

Power Code,