The article describes the synthesis of magnetic hexagonal calcium-containing ferrites with using three different techniques: thermal treatment of mechanical mixtures of oxides, thermal decomposition of the solid mixture of salts obtained by the evaporation of their aqueous solution, and jointly coprecipitation of oxalates. During the synthesis, temperature and atmosphere at the last stage, namely, under high-temperature treatment, are varied. Calcination of the obtained dry mixtures is performed at temperatures of 700, 900, and 1000°C in the air and in inert atmosphere. In SEM-images, the structure of ferrite is well observed only for the sample obtained by evaporation of salts’ solutions. X-ray diffraction analysis of the samples obtained at the temperature of 1000°C in inert atmosphere shows that, after using the method of thermal treatment of oxides’ mechanical mixtures, the $\alpha$-Fe$_{2}$O$_{3}$ phase prevails, and after evaporation of salt solutions, the ferrite of Ca$_{0.5}$Ba$_{0.5}$Fe$_{12}$O$_{19}$ composition dominates. When comparing the diffraction patterns of the samples obtained by the same method with the final heat treatment at 1000°C in inert environment and in the air, any difference neither in phase, nor in the elemental composition is not found. This one indicates no influence of calcination atmosphere on the ferrites’ formation. By means of comparison of the diffraction patterns of the samples synthesized by evaporation of saline solutions and calcination at temperatures of 700 and 900°C, it can be concluded that the oxide component predominates over almost missing ferrite phase. Thus, the heating to temperatures of 700—900°C is not enough to initiate the process of ferrites’ forming. Analysis of data of measurements on the Steinberg magnetometer indicates that the magnetic characteristics of the samples synthesized by sintering of oxides and coprecipitation of oxalates are lower in 3—4 times than for the samples obtained by evaporation of solutions of the respective salts. Values of specific magnetization and coercive force of the samples are increased with increasing treatment temperature from 700 to 900°C and then decreased slightly; it concerns to samples obtained both in inert atmosphere and in the air. As experimentally proved, the most effective method for the fabrication of Ca-, Ba-ferrites with magnetic properties is the method of salt-solutions’ evaporation.