The pilot reported that on arrival in the Beverley Springs area he had some problems contacting Flight Service on the high frequency radio. During this period, he planned to land on runway 34. However, he noticed there was no wind and that the aircraft was positioned to make a short circuit for runway 16 so he decided to land on this runway. Due to the problems with the radio and the sudden change of circuit direction, the pilot forgot to complete the down-wind checks and the aircraft landed wheels up. No gear warning horn was heard, but this may have been due to the higher than normal power setting maintained on finals.