If your timing application needs an update you should have a look at the upcoming

XC-86100A timing-generator

• ultra stable oven design 1x10e-9
• digital frequency compensation
• 4 arbitrary adjustable outputs from 1 MHz to 150 MHz and 1 uH res.
• ultra low phase noise
• UTC GPS synchronization better than 5 nsec
• RS232, USB and Ethernet connection
• +24V and +5V power supply
• -40°C to +70°C operation