Radios and Research
Image (Click to enlarge) Model Year Description
Triode or "Audion" tube 1906 In 1907 De Forest patented a bulb with the same contents as the Fleming diode, except for an added electrode. This "grid" was a bent wire between the plate and filament. De Forest discovered that if he applied the signal from the wireless-telegraph antenna to the grid instead of the filament, he could obtain a much more sensitive detector of the signal.
RJ4 1909 The first amplified radio ever made.
RJ8 1910
SCR54A 1918 During World War I, amateur broadcasting was forbidden in the United States and DeForest Radio Telephone & Telegraph was contracted to build receivers for the US Signal Corps, which was successfully using radio communication in the field for the first time in history.
M200 1921
MR-6 Interpanel 1921
9 Panel 1922
D5 1922
D6 1922
DT600 1922
DT700 1922 Single tube radio.
DT800 1922 Among the scarcest items ever to ship out of de Forest's Jersey City factory. Designed to pair up with Deforest's DT-700 radiohome receiver, this two-stage amplifier comes in a walnut cabinet identical in size and shape to that of the DT-700, with audio inputs positioned to correspond with the audio outputs of the radiohome. The connection diagram on the inside of the lid details how the two components are to be connected to each other and to the battery supplies.
UJ2 1922
Radiocraft Radiophone 1922 Radiocraft was purchased by DeForest in 1922 as a means to acquire rights to the Armstrong regeneration patent. Unfortunately, Westinghouse apparently didn't approve transfer of the patent license and the Radiocraft models were discontinued after a short time. Today they are very hard to find. This set was produced by DeForest under the Radiocraft name shortly after the Radiocraft acquisition.
D7 1922
D10 1923
D12 1923 Contains a crystal detector and 4 tubes, rather than being a 5 tube set. Not many of these were sold. The 4 tube model was redesigned into a 5 tube set and the crystal detector eliminated. Then the 4-tubers were recalled and traded straight across for one of the 5 tube sets, which makes those D-12s that still have the detector an especially rare set, much more so than the 5 tube model. The circuit for this set is almost identical to the D-10, which it is sometimes confused with because of that.
D7A 1923 3 tube radio.
DeForest-Crosley 51 1924 Wood case. Bakelite front. It has spider web coils and uses 2 WX12 tubes.
D17 1924
F 1924
F5 1925
F5M 1925
Trirdyn 1925
W5 1925 55" high x 19 1/2" wide.
F5AL 1925
C5 1926
602 1929 Fidelity series, Neutrodyne, Batteryless Receiver, AM. It has 7 tubes (types 80, 71A, 27 and four type 26 tubes). The radio has a nice flip top that latches open automatically. 115V, 60 watts, 25-60 cycles, patent 1924,26,27.
UNKNOWN08 1930 De Forest radiophone receiver manufatured in 1930 in Passaic, NJ. The radio tunes from 1.5 to 20 Mhz. with bandswitching via the plug in coil set pictured.
UNKNOWN14 1930 2 tube short wave converter made by Deforest Crosley in Canada. Deforest products made in Canada are much rarer than their US counterparts, and often had a similar US product. Wood cabinet. Converter covers 1.5mc to 22mc in 3 bands. Measures 11.5" wide, x 9" deep by 10" high.
608A 1932 37.5 x 21.9 x 12.15 inches
B8 1934
81 1935 Wood with different veneers, made by Knechtel Furniture Co. Ltd. Hanover, On, Canada. 6A7 (mod. osc.), 88 (IF), 6B7 (AF det.), 41 (AF), all original spray-shield, 80 (rect.) 13" x 8" x 10". 22 pounds
1523 1935 16 3/4 inches high, 12 1/2 inches wide & 8 1/2 inches deep
CONNAUGHT 1936 3 Bands: AM, Shortwave and a Police Band. The "Connaught" was Deforest Crosley's top of the line table model set for 1936. It was actually manufactured by Rogers Majestic Limited of Toronto and shares the same chassis as the Rogers model "Ten-60" and the Majestic "Jolliette". The information label attached to the inside of the radios cabinet identifies this model as the "Connaught" while the schematic for this set, found in the Radio Collage of Canada books, identifies this set as the "Connought". Tuning on this radio is aided by a special 24 volt light bulb mounted on the dial that would stay lit but would dim as soon as a station is tuned in. 21(H) x 15(W) x 11.25(D) Measures 21 inches tall and 11.5 inches wide and 15 inches in length. The radio weighs about 50 pounds.
6D531 1937 DeForest-Crosley police band SW "Tombstone" "Meteor" radio. Measures 18"Hx15"Wx9.5"L
6D632 1937 The "Electra" was Deforest Crosley's top of the line table model set for 1937 and shares the same chassis, type 6D632, as the DeForest Crosley "Mars" console. This radio was actually manufactured by Rogers Majestic Limited of Toronto and shares the same chassis as the Rogers model "11-60, 11-65, 11-66, (type 6R632 chassis), 11-68, 11-69, (type 6R631 chassis)" and the Majestic "Rodney, Renown, and Hood". Tuning on this radio is aided by a special light bulb mounted in the center of the tuning needle stay lit but would dim as soon as a station is tuned in. 21(H)x 19.25(W) x 10.25(D)
7D933 1937 Tubes: 2X3 (2), 6F6M, 6F5M, 86M, 6K7M (2), 6A7M, 6X6 Power: 25/60-cycle
7D634 1938
7D832 1938
8D722 1938 7-tube, 2X3 (Qty 2, rectifier), 6X6 (tuning indicator), 6J8M (Modulator-Oscillator), 6K7M (IF Amp), 75M (2nd Detector and audio amp), 41M (Output). 2 Bands: AM (Broadcast), Short Wave 38 " high, 24" wide, 11" deep, 66lbs
10D691 1940 Tubes: 20J8M, 12K7M, 12B6M, 50C6G, 50Y6G, 6X6 Power: 60-cycle
10DA561 1940 Made for De Forest Radio by Rogers-Majestic.
10D451 1941
D566 1945 115 Volts,35 watts, Type 51 DU245. 13 3/4" Long X 9 1/8" Tall 7" deep. Bakelite knobs.
78RPM 1945
D547 1946 The dimensions are 27" X 16" X 9".
D806 1946 5 tube Broadcast band
D607 1947 22 x 14 x 11 inches
D627 1947 5 tube model radio 14B6 - 14A7 - 14Q7 - 35Z5GT and 50L6GT.
D837 1947 The case is made of oak wood. Radio measures 9"H x 14"W.
D518 1948
DeForest-Crosley 5-01As & Crosley Ultra Musicone Speaker 19??
LS300 Speaker 19?? The diameter of the bell is 14 1/2".
UNKNOWN01 19?? 7.5" tall 12.5" wide and 5.5" deep. It weighs 9 lbs.
UNKNOWN02 19?? 115 amps, 6 cycles, 25-60 type Wood cabinet. 12"L x 7"W x 9.5"D.
UNKNOWN03 19?? 37.6 x 20.45 x 10.45 inches
UNKNOWN05 19??
UNKNOWN06 19??
UNKNOWN09 19?? AC/DC and battery. Portable.
UNKNOWN13 19?? Measures: 9.5" wide, 7.5" high, and 5.5" deep.
RJ9 1910s
DeForest-Crosley 50 192? Made by De Forest Radio Corp. in Toronto, Canada in the 1920's. Uses only one tube, a UV-201A by RCA.
UNKNOWN11 192?
UNKNOWN12 192?
56/42 193?
6D471 193?
6D511 193?
CATHEDRAL 193? Weighs 40 lb 18 X 18 X 10 inches
DeForest-Crosley "Mission"? 193? 35" height, 19" wide, 14" deep.
10DA521 194?
10DA522 194?
10DB661 194? These radios were made from 1923 to 1940 by the Rogers Majestic co. for the De Forest Crosley co. The radio measures 17" long by 8" wide by 10" high.
7D731 194? DeForest Crosley 3 Band (Short Wave / Overseas, Police & Standard Broadcast), 7 tube radio. 24" X 14" X 10" in size and weighs about 35 pounds.
8D512 194? Bakelight. Weighs 16lbs 8 oz. and measures 14 x 8 x 8 inches.
8D662 194? 25.9 x 16.3 x 9.05 inches
8D891 194?
9D891 194? 36.1 x 29.9 x 12.75 inches
ELECTRA 194? The wooden cabinet is 19 1/2" high and 16" wide and 10" deep. The radio is 100 volts, 57 watts, 25-60 cyc. Type or model -6D632, Manufactured by Rodgers-Majestic Coorperation Limited, Toronto, Canada for De-Forest-Crosley limited.
80721 Shortwave 194? 12"H x 23"W x 9.5"D 5 tube
St. Regis 194? 11.5"W x 7"H x 5"D
UNKNOWN10 194?

©2004-2022 www.DeForestRadio.com
www.DEFORESTRADIO.COM is not endorsed by nor affiliated with the estate of Dr. Lee de Forest.