Because characteristics of diversity, large-scale and unpredictability of disaster are very difficult to make predict of disaster, rapid disaster response activity is important to reduce damage from disaster. Therefore emergency communication technology is essential to information sharing between field personnel in the field. Because the heterogeneous radios defined as some of 100MHz VHF, 400MHz UHF, and 800MHz emergency communication RF band are used in Korea, the field personnels need to have multiple radios. In order to use one radio per personnel, radio voice intercommunication is very necessary. We study on modular 3-Band RF to communicate between heterogeneous radios through single multi-band antenna and verify scalable of the number of equipped radios.

: Korea port customs surveillance of administration is operated around the 24 hours without a break in accordance with the characteristic of trade, in this specific environment, Ocean fisheries officials are performing this important duty. This research investigated various factors which might influence Korea Customs Service civil servants who are engaged in port, based on advanced researches on job satisfaction and Herzberg's two factors(motive․hygene factor), and analyzed the difference in job satisfaction in respect of job satisfaction composition according to Ocean fisheries officials at port customs sociodemographic characteristics through a survey. Also, the researcher comprehended the factors of job satisfaction which have the biggest influence on the whole job satisfaction. Based on the analysis result, The researcher expects that the results of this research can contribute to customs administration's inherent goal achievement by finding out customs civil servants' job satisfaction degradation factors, who are engaged in port surveillance of administration, and properly controlling them and improving organizational members' job satisfaction.

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