NC-TV7 early

National Company; Cambridge & Malden (MA)

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Country
United States of America (USA)

Manufacturer / Brand
National Company; Cambridge & Malden (MA)

Year
1949 ?

Category
Television Receiver (TV) or Monitor

Radiomuseum.org ID
226864

- alternative name: National Toy Co.
- Brand: Thrillbox

Picture
Schematics

NC-TV7 ; National Company; (ID = 1348013) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348015) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348016) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348018) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348020) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348021) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348022) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348023) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348024) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348025) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348026) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348027) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348028) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348029) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348030) Television — National Company; NC-TV7 (3)

NC-TV7 ; National Company; (ID = 1348031) Television — National Company; NC-TV7 (3)

Click on the schematic thumbnail to request the schematic as a free document.

Technical Specifications

Number of Tubes
22

Valves / Tubes
6AU6 6AG5 6C4 6AU6 6AU6 6AU6 6AL5 6AU6 6AU6 6AU6 6AL5 6AT6 25L6GT 12SN7GT 12SN7GT 12SN7GT 12SN7GT 12AU7 1B3GT or 8016 25Z6GT 6X5GT 7JP4

Main principle
Superheterodyne (common); ZF/IF 37300 kHz

Wave bands
VHF incl. FM and/or UHF (see notes for details)

Power type and voltage
Alternating Current supply (AC) / 105-115; 115-130 / 117 Volt

Loudspeaker
2 Loudspeakers

Power out
2 W (unknown quality)

Material
Metal case

from Radiomuseum.org
Model: NC-TV7 [early] - National Company; Cambridge &

Shape
Tablemodel, low profile (big size).

Dimensions (WHD)
20.75 x 12.75 x 17.75 inch / 527 x 324 x 451 mm

Notes
7" round CRT, tuning range channels 1 through 13 (SAMS: 2 though 13). 2 oval speakers 4" x 6".

Some models have been fitted with an auto-transformer to allow operating at lower mains voltages. These can be identified by an additional transformer, and two fuse positions for 105 - 115 V and for 115 - 130V.

Later production models combine ratio detector and AF amp with 6T8 instead of 6AL5 and 6AT6; see model NC-TV7 [late]. Late models also have only one fuse in place of two.

Mentioned in
Photofact Folder, Howard W. SAMS (Set 67, Folder 14, Date 8/49)

Literature/Schematics (1)
Rider's TV; 2-1, 3-1 and 3-3

Author
Model page created by Friedrich Weber † 12.09.2014. See "Data change" for further contributors.

Other Models
Here you find 446 models, 285 with images and 189 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from National Company; Cambridge & Malden (MA)

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