The precision crystal heater provides temperature stabilization 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 inexpensive alternative to completely heated oven oscillators (OCXOs). However, the stability values of an OCXO can not be reached.
Temperature stabilization of crystals for high frequency stability
R&S®Cable Rider ZPH Brief description:
The R&S®Cable Rider ZPH has all the essential basic measurement capabilities required for installing and maintaining antenna systems in the field. Its unique features ensure...
Icom IC-PW2 1kW HF+ 6m Amplifier
On August 31, 2019, Icom Co., Ltd. announced the IC-PW2 - 1kW linear amplifier in the HF + 50MHz band at its booth at Ham Fair 2019. Full power, full duty specification that uses LDMOS for the final...
HF/VHF/UHF SDR ICOM “IC-705” Transceiver A new HF +50/144/430 Mhz transceiver will be shown and announced on "HAM FAIR 2019" on August 31st (Sat) and 1st (Sun) September 2019 in Tokyo. ICOM "IC-705" 10 Watts of power with new SDR technology.