Features: 100% brand new and high quality for Yaesu FT-817/857/897 and other models suitable for temperature compensation crystal components, fully compatible with the original TCXO-9 The frequency is 22.625MHz, which can improve the stability of the machine after replacing the original crystal, and it performs better than the original module in different environments In the actual test, a high-precision frequency meter is used to observe the frequency of the crystal. The frequency of the original crystal is immediately shifted by fire, but the temperature-compensated crystal has no obvious change, and the effect is remarkable. The accuracy of this crystal can reach 0.5PPM, which is consistent with the parameters of the original TCXO-9 module, the price is only 15% of the original module, and the cost performance is very high Installation method: Turn off the power of the machine, open the upper cover of the machine, and find the location where the temperature compensation crystal is installed. You need to unplug the ordinary crystal brought by the machine first, and then plug it in according to the alignment of the pins. ready to use Package Includes: 1 PC x Compensated Crystal Components FOR FT-817/857/897 Specifications: Item: Compensated Crystal Components Used for : Yaesu FT-817/857/897 Compatible with: TCXO-9 Accuracy: can reach 0.5PPM Frequency: 22.625MHz Size: approx 3x1x1cm/1.18x0.39x0.39in Material: Metal note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.