The valve complement consisted of a triode-hexode frequency mixer, a variable-μ RF pentode IF amplifier and a high slope output pentode. A "Westector" solid-state copper oxide diode was used for demodulation, which saved one valve and allowed use of an available type of pentode for the audio stage.
The valve complement consisted of a triode-hexode frequency mixer, a variable-μ RF pentode IF amplifier, and a high slope output pentode. A "Westector" solid-state copper oxide diode was used for demodulation, which simplified the design by reducing the number of valves required and allowing the use of an available type of pentode in the audio stage.