Make
Webster
Model
440
Description
Webster Bandspanner 440 is a 10 channel, crystal controlled, 11 meter AM transceiver. The I.F. is 1650kc and 259kc and the receiver is dual conversion.
RX Channels
10
TX Channels
10
Power Input
12VDC, 115VAC
Sams #
CB-5, page 150
Tube Complement
| v1 | RF Amplifier |
12BA6 |
| v2 | Mixer - Oscillator |
6GH6 |
| v3 | 2nd Converter |
12BE6 |
| v4 | IF Amplifier |
12BA6 |
| v5 | Detector - ANL |
12AL5 |
| v6 | AF Amp - Speech Amp |
12AX7 |
| v7 | Output - Modulator |
12AB5 |
| v8 | Transmit Osc - Buffer |
6GH8 |
| v9 | Final RF Amplifier |
12AB5 |
| v10 | Rectifier |
12X4 |
Documents
Schematic - Webster440-SamsCB-5_p150-157.pdf