Kennedy type 281 broadcast and short wave receiver
Date: 1921
Inventory Number: RS0249
Classification: Radio Broadcast Receiver
Subject:
Maker: Colin B. Kennedy Company (c1920 - 1933)
Maker: Browning-Drake Corporation (1926 - 1930)
User: Emory Leon Chaffee (1885 - 1975)
User: Cruft Laboratory, Harvard University (founded 1914)
Cultural Region:
Place of Origin:
Dimensions:
19 x 45 x 25 cm (7 1/2 x 17 11/16 x 9 13/16 in.)
Description:
1 tube, TRF regenerative receiver, broadcast and shortwave. wooden box, bakelite front panel and knobs. metal taps.
In Collection(s)
Signedetched and white filled on front panel: COLIN B. KENNEDY CO. /SAN FRANCISCO /ST. LOUIS
etched and white filled on front panel: K / KENNEDY / EQUIPMENT
on face of meter: VOLTS / CURRY CO. / CAMBRIDGE, MASS. / HOYT METER / TYPE NO. 17 / 237
plate on inside of lid: THE COLIN B. KENNEDY CO. / SAINT LOUIS - SAN FRANCISCO / LICENSED UNDER ARMSTRONG / U.S. PAT. 1113149 ISSUED OCT. 6, 1914 / FOR AMATEUR AND EXPERIMENTAL USE ONLY / SERIAL NO. L 10403 W2
plate on transformer inside: NATIONAL / BROWNING-DRAKE / TRANSFORMER / PAT. PENDING / NATIONAL CO. INC., CAMBRIDGE, MASS.
etched and white filled on front panel: K / KENNEDY / EQUIPMENT
on face of meter: VOLTS / CURRY CO. / CAMBRIDGE, MASS. / HOYT METER / TYPE NO. 17 / 237
plate on inside of lid: THE COLIN B. KENNEDY CO. / SAINT LOUIS - SAN FRANCISCO / LICENSED UNDER ARMSTRONG / U.S. PAT. 1113149 ISSUED OCT. 6, 1914 / FOR AMATEUR AND EXPERIMENTAL USE ONLY / SERIAL NO. L 10403 W2
plate on transformer inside: NATIONAL / BROWNING-DRAKE / TRANSFORMER / PAT. PENDING / NATIONAL CO. INC., CAMBRIDGE, MASS.
Inscribedetched and white filled on front panel: TYPE 281 / SHORT WAVE RECEIVER
FunctionPossible function: The Kennedy Receiver had an effective range from
185 meters to 620 meters or from 483,000 Hertz to 1,620,000 Hertz. This instrument could actually go from 150 meters to 620 meters giving it a range from 483,000 to 2,000,000 Hertz.
http://www.rife.org/john%20marsh/rifeinstrumenthistory.pdf
185 meters to 620 meters or from 483,000 Hertz to 1,620,000 Hertz. This instrument could actually go from 150 meters to 620 meters giving it a range from 483,000 to 2,000,000 Hertz.
http://www.rife.org/john%20marsh/rifeinstrumenthistory.pdf