Philips
model L3V35T, 1961 est.
General
features
|
Radio type |
Battery powered portable radio,
all solid state. |
|
Circuit type |
Superheterodyne, 452kHz and
10.7MHz IF with AVC (AM) and limiting and AFC (FM) |
|
Dimensions |
mm, kg |
|
Cabinet |
Vinyl covered wood, vinyl grille,
glass dial |
|
Loudspeaker |
Type AD3460, 100x15mm oval, moving
coil, permanent magnet, |
|
Main controls |
Volume/on-off, tuning, waveband
switch |
|
Connections |
None |
|
Antenna |
Ferrite cored inductor for MW,
telescopic antenna for SW and VHF |
|
Power |
9V DC, 1x PM9 dry battery,
approximately 25mA at normal listening level |
Wave
bands
|
FM VHF |
87.5-108MHz |
|
AM MW |
517-1622kHz (200-550m) |
|
AM SW |
3.2-12MHz (25-90m) |
Circuits
and semiconductor devices
|
VHF preamplifier and
mixer/oscillator |
2x AF114 diffused germanium PNP
transistors |
|
AM mixer/oscillator and FM IF
amplifier |
AF115 diffused germanium PNP
transistor |
|
1st AM / 2nd FM IF amplifier |
AF116 diffused germanium PNP
transistor |
|
2nd AM / 3rd FM IF amplifier |
AF116 diffused germanium PNP
transistor |
|
AM detector and AVC |
OA79 germanium diode |
|
AFC |
Silicon varactor diode |
|
FM ratio detector |
Matched pair OA79 germanium diodes
|
|
Audio preamplifier and driver |
2x OC75, alloy junction germanium PNP
transistors |
|
Audio output stage and thermal
stabilization |
2- OC74 matched pair alloy
junction germanium PNP transistors, thermistor |