ERC SL-55, SL-56

Object/Artifact

-

Radio Alpha

SL-56

Image: Chuck Penson, WA7ZZE, collection

Name/Title

ERC SL-55, SL-56

Description

Active Audio Filter

Category

Audio Filter

Made/Created

Manufacturer

Electronic Research Corporation

Date made

1978 - 1980

Valuations

Value

$75.00

General Notes

Note

QST, Apr 1978, p. 170. Ham Radio, Jan 1979, p. 117. (SL-55) QST, Apr 1979, p. 146. (SL-56) QST, May 1980, p. 162.