So, below are the answers to my technical questions:
1) All headphones to be used throughout the 1st Balkan HST Championship will be Sony productions high quality headphones.
2) All keyboards to be used throughout the 1st Balkan HST Championship will be of the QWERTY layout.
3) Official rules, as mentioned in the Official Bulletin Nr.2, are those found on the following link: http://www.hst2012.ch/rules_.html ,with particular attention to the Annexes.
4) In Transmission Test, it is mentioned that the text messages will consist of mixed characters. I asked Panayot about the quotation marks that may be present in those texts, and I got the answer that only "/" , "=" and "?" will be present.
If you happen to have any similar or other technical questions, please e-mail Panayot at the following e-mail address: firstname.lastname@example.org