Off topic, but I got sidetracked on CTCSS frequencies. I find conflicting information, which I didn't expect.

Take tone 13. I've found three different frequencies for CTCSS 13:

https://www.ailunce.com/blog/what-are-the-ctcss-and-dcs (97.4)
http://www.repeater-builder.com/tech...wood-ctcss.jpg (100.0)
http://missionspec.com/oe/MissionSpe...eatSheet02.pdf (103.5)

Please don't tell me that different manufactrers decided to use different frequencies (but I think you will )

O2