NC-TV7M late

National Company; Cambridge & Malden (MA)

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Country
United States of America (USA)

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

Year
1950 ?

Category
Television Receiver (TV) or Monitor

Radiomuseum.org ID
226860

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

Picture
Schematics

NC-TV7M ; National Company; (ID = 1348048) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348049) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348050) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348051) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348052) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348053) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348054) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348055) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348056) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348057) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348058) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348059) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348060) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348061) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348062) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1348063) Television — National Company; NC-TV7M (3)

NC-TV7M ; National Company; (ID = 1954200) Television — National Company; NC-TV7M (1)

NC-TV7M ; National Company; (ID = 1954201) Television — National Company; NC-TV7M (1)
National TV-7M Meter detail.

NC-TV7M ; National Company; (ID = 1954202) Television — National Company; NC-TV7M (1)
National TV-7M control knobs detail.

NC-TV7M ; National Company; (ID = 1954203) Television — National Company; NC-TV7M (1)
National TV-7M Late version rear view.

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

Technical Specifications

Number of Tubes
21

Valves / Tubes
6AU6 6AG5 6C4 6AU6 6AU6 6AU6 6AL5 6AU6 6AU6 6AU6 6T8 6V6GT 6SN7GT 6SN7GT 6SN7GT 6SN7GT 12AU7 1B3GT 6X5GT 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
Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

Material
Metal case

from Radiomuseum.org
Model: NC-TV7M [late] - National Company; Cambridge &

Shape
Tablemodel, low profile (big size).

Dimensions (WHD)
19.75 x 11.5 x 18 inch / 502 x 292 x 457 mm

Notes
7" round CRT, tuning range channels 1 through 13 (SAMS: 2 though 13). 1 oval speaker 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. This might be standard for this revision.

Early production models use 6AL5 and 6AT6 for ratio detector and AF amp instead of a single 6T8; see model NC-TV7M [early]. Early models also have two fuses in place of only one.

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

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)

Collections | Museums | Literature

Collections

The model NC-TV7M is part of the collections of the following members.

Tim MORITZ (USA)

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