National CRO

Object/Artifact

-

Radio Alpha

Image: Chuck Penson, WA7ZZE, collection

Image: Chuck Penson, WA7ZZE, collection

Name/Title

National CRO

Description

Modulation Monitor Scope

Category

Scope

Made/Created

Manufacturer

National Company

Date made

1934 - 1936

Valuations

Value

$17.50

General Notes

Note

QST, May 1934, p. 111. QST, Jun 1934, p. 73. References Article by Millen: QST, Apr 1934, p. 27. Brief description. Radio News, Aug 1934, p. 74. Adding an astigmatism control. Radio News, Oct 1952, p. 58.