Grundig LF-generator TG20.
Hewlett Packard, Meetzender 608D, gesloopt.
Hewlett Packard, audio-oscillator 200AB.
Hewlett Packard, audio-oscillator 204D.
Leader, Model LSG-10, Signal Generator.
TECH, TE-20 Signal Generator.
General Radio Company, UHF-Oscillator type 857-A
Marconi TF2002B Signal Generator.