Philips
model 2637
General
features
|
Radio type |
Early mains powered table
radio with integral loudspeaker. |
|
Circuit type |
Single stage tuned radio
frequency, reactive detector |
|
Dimensions |
395x470x240mm, 11kg |
|
Cabinet |
Bakelite, with cloth metal grille |
|
Loudspeaker |
200mm, moving iron, permanent
magnet |
|
Main controls |
Primary and secondary tuning,
reaction, grid bias (volume), waveband switch, power |
|
Extra controls |
Loudspeaker on/off |
|
Connections |
Antenna, ground, PU, extra
loudspeaker |
|
Power |
AC, 103-253V in 12 steps |
Wave
bands
|
Lower band |
950-400m |
|
Higher band |
400-250m |
Circuits
and Tubes
|
RF amplifier |
E442 sharp cutoff tetrode |
|
Reactive detector |
E424N triode |
|
Audio power amplifier |
C443 directly heated pentode |
|
Rectifier |
506 directly heated power dual
diode |