Philips
model 284U
General
features
|
Circuit type |
Superheterodyne, 452kHz IF with
delayed AVC |
|
Dimensions |
500x290x240mm, ca.10 kg |
|
Cabinet |
Bakelite, cloth grille, printed
glass dial |
|
Loudspeaker |
200mm, moving coil, permanent
magnet |
|
Main controls |
Waveband switch, tuning,
volume/on-off at front, tone at left side |
|
Connections |
Antenna, ground |
|
Power |
AC or DC, 22-230 V, ca. 60W |
Wave
bands
|
MW |
160-570m |
|
MW local |
160-570m |
|
SW |
45-160m |
|
SW |
13.5-45m |
Circuits and Tubes
|
RF preamplifier |
EF8 low noise remote cutoff
pentode |
|
Oscillator and mixer |
EK2 octode |
|
IF amplifier |
EF9 remote cutoff pentode |
|
Detector and audio power amplifier
|
CBL1 duodiode-pentode |
|
Rectifier |
CY1 diode |
|
Heater current stabilizer |
Hydrogen-iron resistance tube |