Cosmos Radiobrix Reaction Unit Type RB.3

• Brand: Cosmos-valves

Cosmos Radiobrix comprise a comprehensive range of units, by various combinations of which the radio experimenter or amateur can build up any type of receiving set or circuit. By the addition of units he can employ any desired number of stages of high or low frequency amplification.
Radiobrix are mounted in hardwood boxes, carrying ebonite panels measuring 5 inches by 5 inches.
Radiobrix Type RB.4. Reaction Unit, comprising Cosmos high-frequency intervalve transformer with adjustable reaction coil mounted on a swinging arm, as used in the standard Cosmos Radiophone Valve Set. The unit is especially adapted for reaction coupling to the anode circuit of the first H.F. amplifying valve, producing a non-radiating circuit which does not cause interference with neighboring receiving stations.

In questo link sono elencati 39 modelli, di cui 37 con immagini e 4 con schemi.
Elenco delle radio e altri apparecchi della Metropolitan-Vickers (Metro-Vick, Cosmos); GB