2 x Precision crystal heater 40° QH40A
40,8 °C • +/- 1,5 °C
| Temperatur | 40.8 °C +/- 1.5 °C |
| Regulation accuracy | better 0.1 °C |
| Supply voltage | +8 ... 12 V DC, use stabilized voltage |
| Inrush current | typ. 80 mA |
| Dimensions (mm) | 11.5 x 13.8 x 2.4 |
The precision crystal heater provides temperature stabilisation for crystals.
The circuit, which is built on AL2O3 ceramic substrate, has to be mounted on the 40 °C thermostat crystal. Then, the crystal is heated to 40.8 °C with a regulation accuracy of better than 0.1 °C. This provides high frequency stability.
The precision crystal heater is a in expensive alternative to completely heated oven oscillators (OCXOs). However, the stability values of an OCXO can not be reached.
The circuit, which is built on AL2O3 ceramic substrate, has to be mounted on the 40 °C thermostat crystal. Then, the crystal is heated to 40.8 °C with a regulation accuracy of better than 0.1 °C. This provides high frequency stability.
The precision crystal heater is a in expensive alternative to completely heated oven oscillators (OCXOs). However, the stability values of an OCXO can not be reached.
- Temperature stabilisation of crystals for high frequency stability
- The following references/instructions can be found here: https://www.kuhne-electronic.de/kuhne/en/fix/qh40a/
- The following references/instructions can be found here: https://www.kuhne-electronic.de/kuhne/en/fix/qh40a/
- High stablility crystal oven based on the principle of zero temperature gradient
- Installation of a QH 40 A crystal heater into a standard JRC JST-245 TCVR
- Installation of a QH 40 A crystal heater into a Icom IC-746
- QH40A Mod for FT-847
- Installation of the QH 40 A into an Icom IC-R71E HF Receiver
- Installation of a QH 40 A into a LT2S Transverter
