Brand and type: Philips - The brown one left is type LX422AB, the middle one is a LX444/AB04 and the green one at the right is a LX444AB/02.
Produced: In Holland in 1954, except the brown one, this is a 1952 model.
Cabinet: In case of the brown one I'm
rather sure it's bakelite. The other two are probably another
ureum formaldehyde. In the inside is a voltage dropping resistor
right under the "ceiling". That's why the green radio
looks a bit deformed on top due to the resistors heat production.
Bakelite wouldn't do that.
The back lid should be removed carefully as it holds the loop antenna at the inside which is connected to the radio with a 5 pin connector.
The green radio is rather rare. It seems also purple models exist.
And 2 other collectors informed me about red models, I don't recall their names due to loss of mail some times.
Very often you'll find that the dial cover is damaged at the edges as people tried to remove it from the outside. That's impossible without breaking off the mounting hooks. A missing underlid is also common. I have two other portables of the same model, both parts sets in bad shape without the bottom plate.
For shortwave there's an outside loop antanna, to be lifted up and fitting around the back when not in use. The '52 model does without the additional external loop. It also lacks the magic eye of the other models. Another difference is the hole in the back for the different voltage selector.
Tubes: For the LX444 1954 models: DF96
(HF stage) - DK92 (mixer/oscillator) - DF96 (IF-stage) - DAF96
(detector/AF pre-amp) - DL96 (audio output) - DM71 (tuning
The brown 1952 model has a different line up: DF91 (HF-stage) - DK92 (mixer/osc.) - DF91 (IF-amp) - DAF91 (detector and audio pre-amp) and DL94 (audio output). All are 7-pins, the DM71 is a thin glass tube with the connecting wires coming out of the glass.
Power: Mains supply 110-125-220 V AC.
Batteries: 2x 67.5 V giving 135 V working voltage and 2 D-cells in series for the filaments. According to the dial prints it was possible to use rechargables too, though my documentation doesn't mention it.
Bands: Longwaves from 800 to 2000 meters, mediumwaves from 200 to 550m and shortwaves from 20 to 50 meters. On the dial are station names for medium and long wave band. An odd thing is that it mentions two Dutch stations as Hilversum and Hilversum I, while their official names were Hilversum 1 and Hilversum 2 at that time.
Controls: The left knob is for power off/batteries/AC or recharge. The right one is the band switch. The cream radio has gold plated knob centers, the others are chrome plated.
Obtained: All 3 between '85 and '90. That time they still were affordable.
Condition: Quite good, all are complete. No broken off edges, cracks or replaced parts. Just a bit of wear, acceptable for radios of that age.
Working: All good and sensitive. The oldest radio performs a bit weaker. I wonder if anyone ever has used the magic eye to tune in. This little green stripe is not really a big help.