There's also an Ö. What's the reason for the CH?
The captions on the 'radio' controls are in English.
ETA, Just noticed an é.
Czech alphabet.
A, a, Á, á B, b C, c, Č, č D, d, Ď, ď E, e, É, é, ě F, f G, g H, h
Ch, ch I, i, Í, í J, j K, k L, l M, m N, n, Ň, ň O, o, Ó, ó P, p Q, q R, r, Ř, ř S, s, Š, š T, t, Ť, ť U, u, Ú, ú, ů V, v W, w X, x Y, y, Ý, ý Z, z, Ž, ž
The Czech alphabet uses several letters in addition to the 26 letters used in the English alphabet. These are á, č, ď, é, ě, í, ň, ó, ř, š, ť, ú, ů, ý, ž.
The letter combination
ch is also considered a single letter and is alphabetized after h.
Letters q, w, x are used only in words of foreign origin.