Denshi Board SR3A Components
Here are some photographs of the components specific to the SR3A kit. I thought they were extremely well made for a vintage kit such as this. The components all appear to be present and genuine and the photographs are useful as a reference. Although this vintage crystal earpiece appears to be similar to that available today, this one seems to be louder and clearer.
Loudspeaker
Microphone
Morse key
The Morse key switch has a nice spring action and click, which is useful when tapping long messages very quickly. Your little whippersnapper will be tapping away spy messages to GCHQ well into the long hours of the night.
Probes
Wires
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Denshi Board SR3ADenshi Block
Denshi Board
Denshi Board SR3A Blocks
Denshi Board SR3A Components
User Manual