Philips model 339A
General
features
|
Radio type |
Mains powered table radio |
|
Circuit type |
Superheterodyne, 475kHz IF with delayed AVC |
|
Dimensions |
|
|
Cabinet |
Veneered wood, cloth grille, wood ornaments, removable celluloid dial in Bakelite bezel. |
|
Loudspeaker |
200mm, moving coil, permanent magnet |
|
Main controls |
Tone, volume/on-off, tuning and waveband/PU/on-off switch |
|
Extra controls |
Power line antenna/outdoor antenna selector |
|
Tuning indicator |
Illuminated meter |
|
Connections |
Antenna, ground, PU, external high impedance loudspeaker |
|
Power |
AC, 110-245V in 6 steps, 65W |
Wave
bands
|
MW |
190-560m |
|
SW1 |
13-45m |
|
SW2 |
45-160m |
Circuits
and Tubes
|
RF preamplifier |
EF5 remote cutoff pentode |
|
Oscillator |
EF6 pentode connected as triode |
|
Mixer |
AH1 heptode |
|
IF amplifier (2 stages) |
2x EF5 remote cutoff pentodes |
|
Audio amplifier, Det. and AVC |
EBC3 duodiode-triode |
|
Audio power amplifier |
El3 9W pentode |
|
Rectifier |
EZ3 indirectly heated dual power diode |