AI | Deep Tech | Robotics | Emerging Technologies - Independent Analysis

Showing posts with label hro. Show all posts
Showing posts with label hro. Show all posts

National HRO-60

Specifications:

National Company HRO Sixty

Interchangeable coils
Dual conversion for coils B (7-14.4 MHz) and A (14-30 MHz)
Dimensions Dimensions (WHD) 502x257x419mm
Weight 24Kg

1952

National HRO


Specifications:

Tubes 9
Short wave bands 2
Dimensions Dimensions (WHD) 438x223x300mm
Weigth 20 Kg.

1935
 

National Radio Company


The company was incorporated, in 1914, as the "National Toy Company", but by 1916 had included household appliances in their product range. This expansion led to the name change to the "National Company, Inc.". By 1923 the product line included toys, food mixers, and radio components. Radio components were to play an important part in the company's growth in the mid-1920s as they moved into the large scale manufacture of capacitors.

In 1935 National introduced their top-of-the-line HRO receiver. This radio included two RF stages and a crystal filter. The distinctive dial allowed KC (kHz) resettability and was a National trademark into the 1960s. With few changes other than to keep up with changing tube technology, this same basic design survived for over 20 years.

The General Coverage Communications Receiver National HRO has been developped by James Millen from National Company.

National HRO
National HRO-60
National NC-300
National NC-303
National HRO-500