@Shufei free bands in Czech Republic are:
- CB (27 MHz) - FM/AM/SSB, max 4W (12 for SSB)
- 34 MHz - 4 channels, FM, max 1W
- 77-81 MHz - 8 channels, FM, max 1W
- 172-173 MHZ - 5 channels, FM, some 1W, some 5W
- PMR446 - 500mW, 16 channels, FM/dPMR/DMR
- 448-449 MHz, 5 channels, FM, some 1W, some 5W
Except for the 34MHz band, for which you can't find equipment these days, all of these bands have some activity. Ten days ago, I organized contest across all these bands and modulations and there were people who brought transceivers for all bands on the hill and were there almost the whole day.