Comtech C-101-KK-1 Stable Clock Oscillator 1.544 MHz SatCom Rackmount 1U

Comtech C-101-KK-1 Stable Clock Oscillator 1.544 MHz SatCom Rackmount 1U

The Comtech C-101-KK-1 is a 19", 1U rackmount stable clock oscillator designed for satellite communications (SatCom) and related telecom timing applications. It generates a precise 1.544 MHz reference clock signal — the foundational T1 rate used throughout telecommunications and satellite earth station equipment. The unit houses a Vectron 00-252B17K crystal oscillator and an LP 16-700 flathead-type signal transformer as core timing components.

Specifications & What's Included

• Model: Comtech C-101-KK-1
• Type: Stable Clock Oscillator
• Output Frequency: 1.544 MHz
• Form Factor: 19" rackmount, 1U
• Crystal Oscillator: Vectron 00-252B17K
• Signal Transformer: LP 16-700, Flathead Type
• Front Panel: FREQ ADJ trimmer, FAULT LED indicator, CLOCK BNC output connector, POWER illuminated switch, FUSE (push-to-reset)
• Rear Panel – Customer I/O: DB25 female connector
• Rear Panel – Modem I/O: DB25 female connector
• Rear Panel – 1:1 Switch I/O: DB9 female connector
• AC power cord (NEMA 5-15P) included and attached

Applications

Stable clock oscillators at the T1 reference rate of 1.544 MHz are a fundamental building block in satellite earth station equipment, where they provide a stable timing reference for modems, multiplexers, and baseband processing equipment. In a SatCom earth station, the clock oscillator synchronizes the data streams passing between customer equipment and satellite modems, ensuring that the data rate and framing are locked to a known, stable frequency. Comtech has been a well-known manufacturer of satellite communications and modem equipment, and units like the C-101-KK-1 were designed to interface directly with their satellite modem product lines via the Customer I/O and Modem I/O ports. The 1:1 switch I/O port supports redundancy switching applications — a common requirement in mission-critical earth station installations where a standby unit must be able to take over automatically. These types of clock reference units date from the era of analog and early digital satellite communications infrastructure, typically the 1980s through 1990s, and are still sought by operators maintaining legacy earth station equipment or integrating period-correct SatCom gear.