You plan to visit Belgium?
Welcome to all foreign radioamateurs to Belgium!Welcome!
You'd like to operate ham radio in Belgium?
If you plan to stay longer than 3 months and if you hold a HAREC operator certificate (CEPT TR61-02), you can apply for a Belgian Callsign, which probably will be a ON9-call. Contact BIPT/IBPT, the Belgian regulatory body regarding radio licenses.
If your PTT administration didn't sign the CEPT agreements, you can ask for a special guest license. Send an inquiry letter with a photocopy of your license to BIPT/IBPT. In any case you should include a photocopy of your licence together with the study program relating to the radio amateur examination in your country. The whole procedure may take quite a while and no guarantee of success.