All-Wave All-World Skyscraper
Lissen Ltd.; London and Richmond, Surrey
- Pays
- Royaume Uni
- Fabricant / Marque
- Lissen Ltd.; London and Richmond, Surrey
- Année
- 1933–1935 ?
- Catégorie
- Boîte de construction (composants et manuel) ou instructions
- Radiomuseum.org ID
- 223535
Cliquez sur la vignette du schéma pour le demander en tant que document gratuit.
- No. de tubes
- 4
- Principe général
- Récepteur TRF - par réaction (régénératif)
- Gammes d'ondes
- PO, GO et 2 x OC
- Tension / type courant
- Piles (rechargeables ou/et sèches)
- Haut-parleur
- - Ce modèle nécessite des HP externes
- Matière
- Boitier en bois
- De Radiomuseum.org
- Modèle: All-Wave All-World Skyscraper - Lissen Ltd.; London and
- Forme
- Modèle de table vertical (pas forme catédrale)
- Remarques
-
The Lissen Skyscraper 4, is a battery-operated set covering four wave-ranges nominally:
- 12-35 metres
- 28-80 metres
- 195-520 metres
- 800-1,970 metres.
It is cleverly planned so that it may be built by the least experienced home constructors with the virtual assurance of success.
Basically, the circuit comprises a three-stage HF, Detector, and LF, with a single-tuned input and inter valve circuits, followed by a push-pull output stage.
The various wave -ranges are covered by multiple coil assemblies with built-in wave range switches.There are several other interesting features, not the least of which is the combined volume reaction control, which is effected by a single specially designed component.
This consists of a potentiometer through which the grid bias of the HF valve is varied from maximum negative to zero; further rotation of the control has the effect of increasing reaction feedback between plate and grid circuits of the detector valve in the usual way, grid voltage being meanwhile held at zero.
With regard to the push-pull output circuit, which is coupled to the detector valve by a high ratio LF transformer, it should be noted that matching of the output valves is effected by adjustment of auxiliary grid voltage. To this end, individual pentode valves are supplied with the kit of parts that bear a label showing the appropriate voltage to be used, so the constructor meets with no difficulty and does not require any measuring instruments.In 1935 basic kit £5 12s 6d (inc. valves)
Extras: Table Cabinet 16s 6d, Consolette £1 5s
About £8 for kit + Consolette case in 1933.
- Prix de mise sur le marché
- 8.00 GBP
- Schémathèque (1)
- Wireless World (The), London (WW, 79) (Dec 1, 1933 Page 430)
- Auteur
- Modèle crée par Michael Watterson. Voir les propositions de modification pour les contributeurs supplémentaires.
- D'autres Modèles
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Vous pourrez trouver sous ce lien 159 modèles d'appareils, 124 avec des images et 58 avec des schémas.
Tous les appareils de Lissen Ltd.; London and Richmond, Surrey