Petr OK2CQR with the support of Dan OK1HRA, Martin OK1RR and Miška OK2-36141 he created a new radio amateur callbook http://HamQTH.com/. It is a response to the changes that have taken place in the popular QRZ.com. HamQTH.com is free. However, the authors will welcome a contribution to the operation, or at least the expansion of the report on the creation of this callbook. Data output for diaries will also be added in the near future. If you do not find your brand in the database, fill in your details.