Philips
model BX665X
General
features
|
Circuit type |
Superheterodyne, 452kHz variable
bandwidth IF with delayed AVC |
|
Dimensions |
58 x 35.5 x 26cm, 13.5kg |
|
Cabinet |
Wood, cloth grille behind Bakelite
ornament, external printed glass dial. |
|
Loudspeaker |
200mm, moving coil, permanent
magnet |
|
Main controls |
Tone/bandwidth switch, volume,
on-off switch, tuning, waveband switch, PU switch. |
|
Connections |
Antenna, ground, PU, external
loudspeaker |
|
Power |
AC, 110 to 245V in 6 steps, 55W |
Wave
bands
|
MW |
175-560m |
|
SW |
50-155m |
|
SW |
30.4-51m |
|
SW |
19.4-31.6m |
|
SW |
13.3-20m |
Circuits
and Tubes
|
RF preamplifier |
EF22 remote cutoff pentode |
|
Oscillator and mixer |
ECH21 triode-heptode |
|
IF amplifier and audio amplifier |
ECH21 triode-heptode |
|
Audio power amplifier, detector
and AVC |
EBL21 9W pentode-duodiode |
|
AVC delay voltage |
Selenium semiconductor diode |
|
Rectifier |
AZ1 dual power diode |
|
Tuning indicator |
EM4 dual sensitivity fluorescent
tube-triode |