Conclusions
To increase the objectivity of comparative estimates of receivers of the same form, it is useful to measure the two-signal selectivity using as the control level of the useful signal, not the maximum actual sensitivity but its worst value allowable by the technical conditions.
The method proposed for improving the measurement of two-signal selectivity enables one to reduce the metrological errors inherent in the method described in GOST 12252-66. Appendix 2 to GOST 12252-66 must be supplemented by quantitative criteria for choosing the GSS, defining the possibility of using them for measuring two-signal selectivity.
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Literature cited
V. Rotkevich and P. Rotkevich, Radio-Receiver Measurement Technique [in Russian], Svyaz', Moscow (1969).
V. N. Golubev, Frequency Selectivity of AM Signal Receivers [in Russian], Svyaz', Moscow (1970).
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Additional information
Translated from Izmeritel'naya Tekhnika, No. 8, pp. 77–78, August, 1978.
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Gerasimenko, V.F., Khupovka, Y.G. Metrological features of the measurement of two-signal receiver selectivity and improvements to All-Union State Standard (GOST) 12252-66. Meas Tech 21, 1140–1143 (1978). https://doi.org/10.1007/BF00825146
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DOI: https://doi.org/10.1007/BF00825146