Part 4/8:
Accompanying vintage gear are more recent devices, such as multiple signal generators operating in the ELF (Extremely Low Frequency) to low MHz ranges, around 10 MHz. The presence of these modern tools indicates ongoing efforts that range from historical exploration to active signal testing and measurement.
One particularly interesting device is a multi-signal generator, hinting at complex testing scenarios or simulations. There are also various RF (Radio Frequency) spectrum analyzers, which facilitate detailed investigations into the electromagnetic spectrum.