FT-817/857/897 and other models suitable for temperature compensation crystal components, fully with the TCXO-9.The frequency is 22.625MHz, which can the stability of the machine after replacing the crystal, and it performs the module in different environments.In the actual test, a high- frequency meter is used to observe the frequency of the crystal. The frequency of the 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 with the parameters of the TCXO-9 moduleGenerally, the temperature difference between winter and in the northern region is . Many machines adjust the frequency in and then deviate in winter, or when they are used indoors normally in winter, the frequency will deviate when they go to the field, and this temperature compensation crystal can be used to solve the problem.: TCXO-9Product Name: Temperature Compensation Crystal ModuleFrequency: 22.625MHzProduct size: 3 x 1.3 x 1.3cmInstallation : Turn off the 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 crystal brought by the machine first, and then plug it in according to the alignment of the pins. to Colour:blueMaterial:MetalPackage Contents:1 * Temperature Compensated Crystal ModuleOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.