Before revision: The radio receiver Yaesu FRG-7000 uses the "Wadley loop".radiomuseum.org: Yaesu FRG-7000 Citat: "...Wadley-Loop principle (including dual superhet)..." The "Wadley-drift-canceling-loop" or shorter "Wadley loop" is a system of two oscillators, synthesizer - and two mixers in the radiosignal path.
After revision: The radio receiver Yaesu FRG-7000 uses the "Wadley loop".radiomuseum.org: Yaesu FRG-7000 Citat: "...Wadley-Loop principle (including dual superhet)..." The "Wadley-drift-canceling-loop" or shorter "Wadley loop" is a system of two oscillators, a frequency synthesizer, and two frequency mixers in the radio-frequency signal path.