Type |
Voltage |
Osc. heater |
Noise balancing system |
Quartz Filter |
Remarks |
BC-312__ |
12 - 14V DC |
X |
X |
X |
Dynamotor DM-21-A (90 - 100W) |
BC-312-A |
12 - 14V DC |
- |
X |
X |
Dynamotor DM-21 (50 - 50W) |
BC-312-C |
12 - 14V DC |
- |
X |
X |
Dynamotor DM-21 |
BC-312-D |
12 - 14V DC |
- |
- |
X |
Dynamotor DM-21, no Noise suppression circuit |
BC-312-E |
12 - 14V DC |
- |
- |
X |
Dynamotor DM-21, no Noise suppression circuit |
BC-312-F |
12 - 14V DC |
- |
- |
X |
Dynamotor DM-21, no Noise suppression circuit |
BC-312-G |
12 - 14V DC |
- |
- |
X |
Dynamotor DM-21, no Noise suppression circuit |
BC-312-J |
12 - 14V DC |
- |
- |
X |
Dynamotor DM-21, no Noise suppression circuit |
BC-312-HX |
24 - 28V DC |
- |
- |
X |
Dynamotor DM-21CX,
12A6 instead of 6F6 tube, for break/in G1 of audio tube connected to earth |
BC-312-NX |
24 - 28V DC |
- |
- |
- |
Dynamotor DM-21CX,
12A6 instead of 6F6 tube, for break/in G1 of audio tube connected to earth,
keine Temperaturisolation des Oszillatorgehäuses |
BC-312-L |
12 - 14V DC |
- |
- |
- |
Dynamotor DM-21,
no thermic insulation of oscillator housing,
Steel used instead of aluminum for chassis and shields,
paper/ceramic instead of mica capacitors |
BC-312-M |
12 - 14V DC |
- |
- |
- |
Dynamotor DM-21, identical to BC-312-L |
BC-312-N |
12 - 14V DC |
- |
- |
- |
Dynamotor DM-21, identical to BC-312-L |