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 YAESU's TCXO crystal units, like the YEASU TXCO-1, TCXO-4 and TCXO-6 high stabilty crystal units.

This board can be used in many ICOM and YEASU 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 mounting holes and pin assignment as the TCXO-1, TCXO-4 and TCXO-6, so it can replace these devices 1:1.

Even the fine frequency calibration by the transceiver is still possible with the CRuni-NG. Another important feature of the CRuni-NG is the high quality multiturn trimmer, which permit a fine frequency alignment from the top without removing the unit from the transceiver.
The high quality TCXO from Murata used on this module providing a high degree of frequency stability over a wide temperature range and very low spure levels. Furthermore there are no warm-up delays like with the orginal crystal units, because no heater are necessary for a TCXO (Temperature Compensated Crystal Oscillator)
The board is delivered as full assembled and tested, so is it quite easy for most people with soldering skills to install and/or replace Yeasu's TCXO-x unit in the transceiver.


The specifications:

- Output frequency: 10.485760MHz (programmable for any value from 8kHz up to 160 MHz)
- Output level: LVCMOS, AC-coupled
-Output Frequency stability: ±0,14ppm@10,48576MHz (or ±0,05ppm@10,48576MHz with extra high stability option)
- Internal reference TCXO Frequency stability: ±0,28ppm@20MHz (or with extra high stability option: ±0,1ppm)
- Operating Temperature Range: -20 to 70°C
- Frequency fine adjustment range: 90Hz (±5ppm) (or with extra high stability option: 100Hz)
- Power supply requirements: 8 to 15 VDC, max. 60mA (or with extra high stability option: 8 to 15 VDC, max. 89mA)
- Module size (LxWxH): 25x15x13mm

Each CRuni-NG is shipped as tested in our lab with a Rubidium frequency standard.

There are two stability options, so choose please your right option here below: