| Model | Manufacturer | Country of Origin | Summary | State | |
|---|---|---|---|---|---|
|
Hell MG12f | Hell | Germany | Wheatstone-code automatic keyer | Unknown |
| Model | Manufacturer | Country of Origin | Summary | State | |
|---|---|---|---|---|---|
|
|
Hell MG12f | Hell | Germany | Wheatstone-code automatic keyer | Unknown |