Callbook

Amateur radio (HAM) is Callbook for.
The public can not be used. Just radio (HAM) must be licensed.
Callbook callsign of the museonsa (Callsign) to provide information based on application.
Call sign, address, name, search, modify, and several features Callbook data (linkage map, a compass, DTMF, phone information, eco-Link, the Federation website integration, barcode scanners, altitude, speed, wigyeong also, various maps, navigation, flash, Morse Code Generator, etc.) as well as additional support.
QSL.com Individuals who are not in the database because you have used a database of information, or it may be a long kolbuk app updated with the latest information Please use.
Best 73!.