Philips
model 291A
General
features
|
Radio type |
AC powered table radio |
|
Circuit type |
Superheterodyne, 452kHz IF with
simple AVC |
|
Dimensions |
630x440x300mm, 25.6kg |
|
Cabinet |
Veneered wood, Bakelite and metal
ornament, cloth grille, cylindrical rotating printed glass dial |
|
Loudspeaker |
250mm, moving coil, permanent
magnet |
|
Main controls |
Volume, tone,
sensitivity/bandwith/PU switch, waveband switch, main tuning, bandspread
tuning, power on/off. |
|
Extra controls |
Loudspeaker on/off |
|
Connections |
Antenna, ground, PU, external
loudspeaker |
|
Power |
AC, 110-245V in 6 steps, 90W |
Wave bands
|
LW |
750-2100m |
|
MW |
170-570m |
|
SW4 |
52-170m |
|
SW3 |
30-52m |
|
SW2 |
18-30m |
|
SW1 |
11-18m |
|
Bandspread on SW1 |
14m, 17m |
|
Bandspread on SW2 |
20m, 25m |
|
Bandspread on SW3 |
31m, 49m |
Circuits
and Tubes
|
RF preamplifier |
EF8 low noise remote cutoff
pentode |
|
Mixer |
EH2 heptode |
|
Oscillator |
EF6 sharp cutoff pentode, triode
operated |
|
IF amplifier |
EF9 remote cutoff pentode |
|
Detector and AVC |
EAB1 triple diode |
|
Audio amplifier |
EF6 sharp cutoff pentode |
|
Audio power amplifier |
EL6 18W pentode |
|
Rectifier |
1561 dual diode |
|
Tuning indicator |
EM3 fluorescent tube-triode |