- Pays
- Etats-Unis
- Fabricant / Marque
- Philco, Philadelphia Stg. Batt. Co.; USA
- Année
- 1949
- Catégorie
- Radio - ou tuner d'après la guerre 1939-45
- Radiomuseum.org ID
- 50941
Upright open position for normal operation.
Back side; closed.
Sams Photofact Folders reference picture.
Chassis front.
Chassis rear.
Chassis bottom.
Cliquez sur la vignette du schéma pour le demander en tant que document gratuit.
- No. de tubes
- 5
- Principe général
- Super hétérodyne (en général); FI/IF 455 kHz; 1 Etage(s) BF
- Gammes d'ondes
- PO uniquement
- Tension / type courant
- Appareil tous courants (CA / CC) / 105 - 120 Volt
- Haut-parleur
- HP dynamique à aimant permanent + bobine mobile / Ø 4 inch = 10.2 cm
- Matière
- Plastique moderne (pas de bakélite, ni de catalin)
- De Radiomuseum.org
- Modèle: 49-603 - Philco, Philadelphia Stg. Batt
- Forme
- Modèle de table générique
- Dimensions (LHP)
- 10.25 x 6.5 x 3 inch / 260 x 165 x 76 mm
- Remarques
- Hand Bag radio, to be opened and set up on edge for operation to provide required heat dissipation.
- Source extérieure
- Ernst Erb
- Source du schéma
- Rider's Perpetual, Volume 18 = 1949 and before
- Schémathèque (1)
- Photofact Folder, Howard W. SAMS (Date 4-49, Set 59, Folder 15)
- D'autres Modèles
-
Vous pourrez trouver sous ce lien 4063 modèles d'appareils, 2220 avec des images et 3711 avec des schémas.
Tous les appareils de Philco, Philadelphia Stg. Batt. Co.; USA
Collections
Le modèle 49-603 fait partie des collections des membres suivants.
Contributions du forum pour ce modèle: Philco, Philadelphia: 49-603
Discussions: 1 | Publications: 1
This interesting compact Philco folds into the shape of a book or small old-style purse when not in use.
The tuning capacitor shaft includes a ball bearing vernier drive reduction system. Typically, the grease has solidified so that the knob appears to operate on a solid shaft with just 1/2 turn tuning range. In this condition, tuning is tricky, and the mechanical mounting of the tuning capacitor seems to be too flimsy for the amount of force that needs to be applied against the knob.
The grease can be softened by applying penetrating oil, followed by a lot of rotation of the shaft. I used a drill to spin the shaft at moderate speed (it is OK to turn beyond the end of the tuning range, at which point the shaft slips as it was designed to) and work the oil into the bearing. After a few minutes, the oil and grease properly lubricate the vernier system, and the tuning has a much more pleasant feel. The mechanical reduction of the vernier means that the knob rotates many full turns to get from one end of the tuning range to the other.
Thomas Albrecht, 05.Sep.10