Renseignements généraux

Nº de série

1165

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

Metal body with metal and synthetic components Métal et composantes synthétiques.

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

27,2 cm

Largeur

26,6 cm

Hauteur

8,9 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Communications

Catégorie

Radio

Sous-catégorie

S/O

Fabricant

Ou

MARSLAND

Pays

Canada

État/province

Ontario

Ville

Waterloo

Contexte

Pays

Inconnu

État/province

Inconnu

Période

Unknown

Canada

This particular unit was a secondhand acquisition from an antique radio shop in Kitchener. Marsland Engineering Ltd. was originally founded as Marsland Radio Service in Waterloo, Ontario in 1929 by 19 year-old Stanley Marsland. Though success seemed unlikely for the company because of the youth of its founder and the Depression that would begin shortly after, Marsland Engineering Ltd. would ultimately grow to become one of Waterloo’s largest employers. The company produced a variety of electrical and electromechanical equipment ranging from tuners, amplifiers, speakers, rectifiers, and relays to nuclear instrumentation, plotting computers, and microwave components. While Marsland Engineering had its own research and development staff, they were also a major supplier to IBM and Northern Electric (whose later incarnations included Bell Northern Research, Northern Telecom, and Nortel Networks). According to the company’s history, “at its peak in the 1960s, Marsland employed 1,400 people in Waterloo, and occupied a 300,000 square foot facility at the corner of Weber and Columbia.” In 1969, the company was purchased by Leigh Instruments of Ottawa, and Leigh-Marsland went on to sell products until 1983, when Leigh closed the Waterloo plant. Seven years later, they would go out of business entirely. In 1969, Stanley Marsland left the company to start a new initiative, Marsland Centre Ltd. This organization owns and manages a series of Waterloo properties for the purposes of providing space – either for offices or for light manufacture – to various businesses in management, consulting, professional, financial, and technology sectors. Upon Stanley Marsland’s departure, management of Marsland Engineering was taken over by his son Larry. After Stanley Marsland’s retirement, Marsland Centre Ltd. was managed by Larry Marsland, his son Brad, and his daughter Melanie. Cette radio spécifique a été acheté dans un magasin de radio antique à Kitchener. Marsland Engineering Ltd. a été fondé originalement sous le nom Marsland Radio Service à Waterloo en 1929 par Stanley Marsland, âgés 19 ans. Malgré la jeune âge du fondateur, et la dépression économique qui allait éclater peu après, Marsland Engineering Ltd va connaitre beaucoup de succès et deviendra un des plus grands employeurs à Waterloo. La compagnie produisait une grande variété d'équipement électrique et électromécanique parmi des syntoniseurs radios, amplificateurs, haut-parleurs et autres. En 1969, la compagnie a été acheté par une compagnie d'Ottawa; Leigh Instruments.

Fonction

To select and demodulate AM and FM radio signals which are then fed into an amplifier. Sélectionner et démoduler des ondes de radio AM et FM qui sont introduites dans un amplificateur.

Technique

The Marsland M400 AM-FM-FMX tuner and its corresponding amplifier, the M200, appear to have been released sometime around 1966. The two pieces of solid state compatible stereo equipment were marketed together as “two of the reasons Marsland is rapidly becoming a big name to audio enthusiasts.” Though the M400 is called an AM-FM-FMX tuner, it should be noted that FMX in this context represents FM stereo operation, and is not to be confused with the noise reduction method invented by CBS in the mid-1980s. When in the “FMX” setting, this tuner will automatically receive the monaural broadcast in addition to receiving the stereo broadcast. In “FMX,” an indicator shows which stations are being received in stereo. A second indicator is used in the monaural “FM” mode to show that a station is being broadcast in stereo. This is indicative of a transitional period that occurred in the stereo era. At this time, some stations had already begun broadcasting in stereo instead of or in addition to broadcasting in mono. The various setting options and indicators on this unit allow for universality in receiving from stations, and compatibility with other equipment that might only be specified for monaural sound. Each of the AM and FM sections of the tuner has its own R.F. stage for better signal selectivity. An adjustable ferrite rod antenna, allows for the reception of better signal strength. The tuner is also equipped with what Marsland refers to as an SCA trap “provided in the FM section to eliminate unwanted signals.” This is presumably referring to the Subsidiary Communications Authorization (SCA) signal, a subcarrier that allows stations to broadcast other services. According to the specifications listed in the Marsland M200/M400 ad in the November 1966 issue of Electron magazine, the M400 was made with 12 transistors, 15 diodes, and 1 zener voltage regulator. Le syntoniseur radio Marsland M400 AM-FM-FMX et l'amplificateur correspondant, le M200, ont été commencé à se faire vendre vers l'année 1966. Ces deux pièces compatibles d'équipement de radio étaient une des raisons principales pour lequel Marsland devenait un grand joueur parmi les passionés d'audio. Chacune des sections AM et FM du syntoniseur ont leurs propres étapes de fréquence radio pour meilleure séléction des ondes. Une antenne adjustable en ferrite permetpour une meilleure réception des ondes.

Notes sur la région

Inconnu

Détails

Marques

Printed on the proper front panel: "FM FMX AM/ TUNING/ LOCAL-DISTANCE/ marsLanD m400/ POWER/ off/ SOLID STATE TUNER"/ On the tuner dial: "STEREO 88 90 92 94 96 98 100 102 104 106 108 FM/ 55 60 65 70 80 90 100 110 120 130 140 150 160 AM"/ On the proper back stamped next to the fuse: "1/16 A. SLO BLOW"/ Stamped above four inputs: "TUNER/ L R/ TAPE/ L R"/ On the manufacturer's label on the proper back: "marsLanD/ ENGINEERING LIMITED/ WATERLOO - ONTARIO - CANADA/ MODEL M400/ SERIAL 1165/ 115 V./ .06A./ 60~/ CSA [logo]"

Manque

Appears complete

Fini

Brown metal casing with a grey, brushed metal front and knobs, black printed text, a black tuner dial with white numbers and two white switches. On the proper back is a black and red fuse receptacle, a silver and black manufacturer's sticker, black stamped text, and brown insulator panels with grey metal screws and inputs. The tuner has a brown synthetic covered power cord. Extérieur en métal brun un devant en métal gris et boutons, texte imprimé en noir. Sur le derrière, on retrouve un contenant de fusible noir et rouge, un collant manufacturier argenté et noir, de l'écriture noire et un panneau noir avec des vise en métal gris. Le syntoniseur a une corde brune synthétique pour alimenter l'appareil.

Décoration

S/O