I decided to add here a simple post about the amateur radio alphabet, which you will come across for SSB connections.
English / Slovak:
A: Aplpha / Adam
B: Bravo / Božena
C: Charlie / Cyril
D: Delta / David
E: Echo / Emil
F: Foxtrot / Francis
G: Golf / Gustav
H: Hotel / Helena
I: India / Ivan
J: Juliet / Joseph
K: Kilo / Karol
L: Lima / Ludvik
M: Mike / Maria
N: November / Neruda
About: Oskar / Oto
P: Papa / Peter
Q: Quebec / Quido
R: Romeo / Rudolph
S: Sierra / Svätopluk
T: Tango / Tomas
U: Uniform / Urban
In: Victor / Victor
X: X-Ray / Xena
Y: Yankee / Ypsilon
From: Zulu / Zuza
0: Zero
1: One / One
2: Two / Dva
3: Three / Tri
4: Four
5: Five
6: Six
7: Seven / Seven
8: Eight / Osem
9: Nine / Nine