[GreenKeys] Army Model 15 TG-7-B (aka Model 15 Decatur)

[Mike Douglas]

The subject teletype has the pulling style selector with the coils in series. This matches the drawings I have found for this model. This gives a 210 ohm selector magnet resistance versus the 55 ohm resistance I’ve seen most hobbyists refer to (parallel coils). Does anyone know if this configuration still ends up at about 4H total inductance people describe (e.g., 2H per coil), or is this configuration actually 16H? 

Mike