The CRuni-NG is a programmable high stability synthesizer unit, based on a Si5351 CMOS synthesizer with a high stability TCXO as reference clock.
It's designed as a replacement for many ICOM's OCXO crystal units, like the ICOM CR338, CR282 and CR293 OCXO crystal units.
This board can be used in many ICOM transceivers, but as a programmable unit it's virtually compatible with many other radios.
For more technical detail see: CRuni-NG Project webpage
The CRuni-NG has the same dimension, pin assignment and location as the CR338 and CR282, so it's mechanically and electrically 100% compatible with both units. The compatibility with the CR293 are given through an adapter board (see options below):