On New Providence Island I made the mistake of joking with the customs official. He asked, "What do you plan to do with this equipment while on our island?"
I replied, "Have a good time!" He was not amused. I was given a card to fill out declaring the values of my transceiver and computer.
Mistake #2 was that I put down close to true values. He made me post a bond of 50% of the value which came to $1500!
I whined that it would leave me with no money to spend during my stay but also did not impress him.
(See my comments on handling customs in the section on Jamaica).