BK4819 TCXO

[mobilinkd]

This is very likely a KDS DSB221SDN 26.0MHz 0.5ppm TCXO judging by the markings. Almost all Chinese radios I have seen use a KDS TCXO for the radio IC. These can be found for about USD0.50 on AliExpress in small quantities.

[mentalDetector]

Thanks for noticing. I came across this KDS TCXO during the process, but KiCad didn't have a ready symbol included. I will generate one in the next update and exchange vs. the more likely KDS.